ADVANCED PRACTICE PROVIDERS

Michelle Coffey, MSN, APRN, ACNS-BC

Chief Clinical Officer

Michelle received her RN and MSN as an Adult Health Clinical Nurse Specialist from UT Austin and joined Austin Geriatric Specialists in 2011.  Michelle specializes in both geriatrics and adults with intellectual and developmental disabilities.   She enjoys promoting quality of life in the setting of chronic disease. In her spare time, Michelle enjoys traveling, swimming, and spending time with her husband and three young children.

Stacey Hamilton, MSN, APRN, GNP-BC

Clinical Director of Population Health

Stacey has been part of Austin Geriatric Specialists since 2002 after receiving her Geriatric Nurse Practitioner certification from UTMB in Galveston. Originally from Dallas, she received her BSN from UT Austin in 1983 and began a 15 year career at Seton Medical Center. Outside of work she is an avid runner and looks forward to spending time with her grandchildren.

Ryan Carpenter, MSN, APRN, AGCNS-BC

Clinical Director of Assisted Living

Ryan is a board-certified Adult Gerontology Clinical Nurse Specialist with a master’s degree in nursing from the University of Texas at Austin. He is a member of the AAPN, NACNS, and Sigma Theta Tau National Nursing Honor Society. During his two year orthopedic rotation, Ryan trained under two top orthopedic surgeons in Austin, where he earned his surgical first assistant certification. With this, he brings wealth of knowledge and experience in Sports Medicine and management of acute and chronic orthopedic conditions affecting the geriatric population. Prior to returning to school, Ryan obtained a Bachelor of Science in Biology at UT Austin. As a two-time UT graduate, he is a proud Longhorn who loves sharing the Central Texas outdoors with his wife and two boys.

Michelle Murray, MSN, APRN, GNP-BC, ACHPN

Clinical Director of Palliative Care

Michelle received a Bachelor of Science in Health at Texas A&M Univ., prior to attending UT Health Science Center for a degree in Nursing.  Her background is focused in geriatrics, most extensively in hospice. She served as a Director of Nursing of a local hospice while obtaining her MSN at UT Medical Branch. As a Geriatric Nurse Practitioner her experience has included hospital, post-acute & home based care.  She is an Advanced Certified Hospice and Palliative Nurse (ACHPN) and is passionate about palliative/end-of-life care and helping patients and families during that transition.

Mary Mann, MSN, APRN, GNP-BC

Clinical Director of House Calls

Mary graduated with a BSN in nursing from the University of Mary-Hardin Baylor in 1986. She gained experience in the Cardiac Intesive Care Unit and also as a hospital supervisor before returning to school to get her MSN. She graduated in 2000 from the University of Texas at Arlington with a dual degree in Adult and Geriatric care, and continues to hold duel certifications as an Adult and a Geriatric Nurse Practitioner. She has gained further education and experience and is now an ACHPN, Advanced Certified Hospice and Palliative Nurse. She is passionate about excellent care of all people, especially of our oldest citizens. She is married and loves caring for her grandson and mother who live with she and her husband.

Debbie Biskobing, MSN, APRN, AGCNS-BC

Debbie is a board-certified Adult Gerontology Clinical Nurse Specialist. Throughout her nursing career she has worked in long term care and skilled nursing.  She takes great personal pride in providing compassionate care for an older population while promoting quality of life. Prior to a career in nursing she was a high school biology teacher. She is also a proud Texas Longhorn with a Bachelor’s Degree in Molecular Biology, in addition to her RN and Masters in Nursing from the University of Texas at Austin. Debbie is a member of Texas Clinical Nurse Specialists, Austin Advanced Practice Nurses Association, and holds a leadership role in Sigma Theta Tau International Nursing Honor Society, Epsilon Theta Chapter. In her spare time, she is an avid runner and enjoys outdoor activities like hiking, camping, and traveling to National Parks with her husband and two boys.

Vanessa Brewer, MSN, APRN, AGCNS-BC

Vanessa is a board certified Adult-Gerontology Clinical Nurse Specialist. She received her Master of Science in Nursing from The University of Texas at Austin. Prior to joining Austin Geriatric Specialists, Vanessa had a successful career as an Inpatient Rehabilitation Registered Nurse in Austin, TX. Her primary passions have always been to help patients restore their independence, strength, and overall well-being. As an AG-CNS, Vanessa is dedicated to providing holistic and compassionate geriatric care. She strives to be an advocate for the vulnerable and underserved. And her primary goal is to provide each patient with the individualized care that is specific to their health needs and goals.

Adam Brunson, MSN, APRN, AGCNS-BC

Adam is a board-certified Adult Gerontology Clinical Nurse Specialist with a Master’s degree in Nursing from the University of Texas at Austin.  Prior to a career in advanced practice nursing, Adam served as a local pastor in the Austin area for 10 years.  As a pastor, he recruited nurses, doctors and pharmacists to run mobile clinics in villages in rural India and Haiti, which is a passion of his.  Adam shares the sensitivity of many in this field that elder-care is of critical importance.  He approaches his work with compassion, integrity and with a focus on quality of care.  He is proud of his 3 beautiful daughters and enjoys time with his wife.  He is often reading, gardening and volunteering outside of work.

Susan Burrow, MSN, APRN, AGACNP-BC

Susan is a board-certified Adult-Gerontology Clinical Nurse Specialist. She received her Master of Science in Nursing from  Walden University in Minnesota. Prior to joining Austin Geriatric Specialists, Susan had a successful career as a nurse at Seton Medical Center as a cardiac nurse for over 13 years. Over the years as a cardiac nurse, Susan has developed a passion for caring for the geriatric population and joined Austin Geriatric Specialists in 2017. Susan is passionate about providing compassionate, evidence-based, and holistic care to the geriatric population. In her spare time, she enjoys the great outdoor activities that Austin offers with her partner and two children.

Susan Chen, MSN, APRN, FNP-C

Susan is a board certified Family Nurse Practitioner.  She obtained her bachelor's degree in nursing at San Francisco State University in 2008.  She worked for many years as an RN at St. David's Medical Center South Austin before deciding to pursue her master's degree in nursing at the University of Texas Health Science Center in San Antonio, graduating in 2015 and joining Austin Geriatric Specialist in 2016.

Tori Clements, MSN, APRN, AGPCNP-BC

Tori is a board certified Adult Geriatric Primary Care Nurse Practitioner.  She obtained her Master of Science in Nursing from The University of Texas Medical Branch in Galveston.  She worked as a Registered Nurse for 16 years in Houston, Texas, her hometown.  She considers it an honor and a privilege to care for aging individuals.  She enjoys spending time with her husband, and two daughters, while exploring Central Texas and boating on the beautiful lakes.

Alison Conway, MSN, APRN, FNP-C

Alison is a board-certified Family Nurse Practitioner with a master’s in nursing from Texas Tech University Health Science Center. Alison has over 10 years of experience as a Registered Nurse in a variety of settings including inpatient cardiology, outpatient cardiac rehabilitation, and home health. She is excited to be a part of Austin Geriatric Specialists as she enjoys building relationships with and providing caring, individualized treatment for elderly patients and their families. In her free time, Alison likes to read, bake, and spend time with her family and friends.

Liliana Damron, MSN, APRN, FNP-C

Lili is a board-certified Family Nurse Practitioner with a Master of Science in Nursing from Texas State University. Lili joins AGS team with 4 years of experience as a critical care registered nurse. She double majored and received her Bachelor of Science in Nursing and Business Administration from Tarleton State University. Lili has always been passionate about caring for the adult and geriatric population and is also fluent in Spanish. In her spare time, she enjoys painting, paddle boarding, hydroponic gardening and spending time with her husband and their two dogs.

Lynnea Edwards, MSN, APRN, AGCNS-BC

Lynnea is a board-certified Adult Gerontology Clinical Nurse Specialist. She obtained her master’s degree in nursing from the University of Texas at Austin. Lynnea specializes in geriatrics and palliative care, and is passionate about supporting meaningful, patient-centered dialogue and decision-making in the face of serious illness and difficult choices. Outside of work she loves being outdoors, hiking and camping with her husband and child. She also enjoys studying meditation, reading, and volunteering for local causes. 

Heather Gilcrease, MSN, APRN, FNP-C

Heather is a board-certified Family Nurse Practitioner with a master’s degree in nursing from Texas State University. Prior to pursuing her master’s degree, she worked for 7 years as a registered nurse caring for hospitalized patients. Heather developed a passion caring for geriatric patients early in her career. She values providing individualized, holistic care throughout the lifespan including end of life and palliative care. 

Tara Gordon, MSN, APRN, FNP-C

Tara is a board-certified Family Nurse Practitioner with a master’s degree in nursing from Maryville University, and is a member of Sigma Theta Tau International Honor Society. Prior to pursuing her masters degree, she worked as an Emergency Room Nurse for 14 years. Prior to joining Austin Geriatric Specialist Tara worked as a medical provider for a mobile urgent care. Tara is passionate about providing compassionate, evidence-based and holistic care to the geriatric population. In her spare time, she enjoys traveling with her husband and children, reading books and anything that involves nature. 

Angela Henninger, MSN, APRN, FNP-C

Angie is a board-certified Family Nurse Practitioner with a Masters of Science in Nursing from Texas State University at Round Rock. Prior to joining Austin Geriatric Specialists, Angie was a Registered Nurse for 15 years with a background in pre and post-surgical care, Oncology, and Hospice. She enjoys caring for and working with her patients and their families to provide evidence-based, holistic care that is compassionate and aims to increase quality of life. When she is not working, she enjoys spending time with her husband and daughter going to movies, enjoying good food, and cheering her daughter on at volleyball games.

Amanda Kanski, MSN, APRN, FNP-C

Amanda is a board-certified Family Nurse Practitioner. A lifelong Longhorn, she received both her undergraduate and master’s degree from the University of Texas at Austin. Amanda started her career as a critical care RN and worked in the ICU for six years, including time at Brackenridge/Dell Seton Medical Center. Amanda has a passion for geriatrics and enjoys taking a holistic approach to care through education and family involvement. She also brings experience as an APRN in the hospice and palliative care realm and strives to deliver compassionate care that focuses on quality of life. In her spare time, she and her husband enjoy all things Austin, including exploring new restaurants, spending time at Town Lake, and attending UT football games. 

Heidi Kook-Willis, MSN, APRN, AGNP-C

Heidi is a board certified Adult Gerontology Nurse Practitioner with a Master’s of Science in Nursing from UT Medical Branch at Galveston. During her 15 years of nursing experience, which includes ICU, cardiology, hospice and palliative care, she developed a passion for Geriatric and Palliative medicine.


Her practice focuses on using a holistic approach to maximize health and quality of life in the older adult population. She considers it a privilege to support and care for patients and families as they navigate the challenges of aging and chronic illness. In her spare time, she enjoys volunteering at a free medical clinic, running, traveling, and enjoying the best of Austin’s food and music with her husband, two kids, and dog.

Marci Landin, MSN, APRN, AGPCNP-BC

Marci obtained degrees in psychology and biology before obtaining her Bachelor’s of Science in Nursing through Texas Tech’s accelerated BSN program. She worked as a bedside nurse in critical care before pursuing her Master’s degree in Nursing from the University of Texas Medical Branch Galveston. She is a board certified Adult-Gerontology Primary Care Nurse Practitioner (AGPCNP) with a special interest in geriatrics and research. Marci is excited to join Austin Geriatric Specialists and work with this population whom, she feels, deserve individualized and holistic care that is delivered in a compassionate and dignified manner. When Marci is not working she enjoys traveling, trying out new restaurants, and spending time with her husband and two daughters.

Joan Lange, MSN, APRN, AGNP-C

Joan came to Austin Geriatric Specialists after completing an Advanced Care Fellowship at Carolinas Medical Center in Charlotte, North Carolina.  She graduated from Texas Women’s University in 2013 where she served as a research assistant studying care for post-operative mastectomy patients and participated in a cross-cultural comparative study of women’s health care in southeast Asia.  Before graduate school she gained extensive experience in hospice and palliative care while practicing in a dozen states from Hawaii to Massachusetts.  She obtained her Bachelor of Science degree from Olivet Nazarene University in her home state of Illinois and is a lifelong Cubs fan.

Haiyan Liu, MSN, APRN, ACNS-BC

Haiyan received her BSN from the University of Texas at Austin in 2003 and worked for 5 years on the cardiovascular floor at Seton Medical Center. She then received her MSN from the University of Texas at Austin in 2008. She is a certified Adult Clinical Nurse Specialists who worked in cardiovascular disease management for Austin Heart for 2 years before turning her focus toward the geriatric population and joining Austin Geriatric Specialists in the spring of 2010.

Beth Lynn, MSN, APRN, AGCNS-BC

Beth received her undergraduate degree in education from Texas Tech University. She earned her Master’s Degree in Nursing from The University of Texas at Austin, and completed a clinical rotation at MD Anderson Cancer Center in Houston. Beth is a board-certified Adult-Gerontology Clinical Nurse Specialist, and is a member of Sigma Theta Tau International Honor Society of Nursing. Prior to joining the practice, Beth worked in the field of endocrinology. She enjoys gardening, boating on area lakes, and especially spending time with her husband and son.

Maggie Martin, MSN, APRN, FNP 

Maggie is a board-certified Family Nurse Practitioner with a master's degree in nursing from the University of Texas Health Science Center San Antonio. Prior to joining Ausin Geriatric Specialist, she worked in family medicine for 4.5 years. She started her nursing career at University Medical Center Brackenridge in the ICU and worked there for 7 years. In her free time, she enjoys spending time with her husband and three young daughters.

Sarah McBride, MSN, APRN, AGCNS-BC 

Sarah is a board-certified Adult-Gerontology Clinical Nurse Specialist with a master’s degree in Nursing from the University of Texas at Austin. She is originally from Wisconsin and moved to Austin in 2010. She worked as a register nurse in critical care and transitioned to the field of wound care and hyperbaric medicine once becoming an APRN. Sarah has always felt a connection to the geriatric patient population and has a desire to provide holistic and compassionate care within this population. In her spare time, Sarah enjoys spending time with her husband and son, hiking with her dog, and exploring the ever-growing city of Austin with her friends.

Arlene Meyer, MSN, APRN, AGCNS-BC

Arlene is a board-certified Adult Gerontology Clinical Nurse Specialist with a master’s degree in nursing from the University of Texas at Austin. She really enjoys working with the aging population by providing patients holistic care, counseling to patients and families about disease processes, supporting staff nurses, and ensuring quality of care. Prior to joining the team at AGS, she worked as a registered nurse in critical care. She also obtained a Bachelor of Interior Design from Texas Tech University. In her spare time Arlene enjoys hiking with her dog Clementine, DIY projects, traveling and spending time with friends and family.

Bobbie Moore, MSN, APRN, FNP-C

Bobbie a board-certified Family Nurse Practitioner who received a Masters of Science in Nursing from Mary Hardin-Baylor. She is a member of AANP and Sigma Theta Tau International Honor Society.  Bobbie has a variety of nursing experience including cardiology and ER. Bobbie enjoys working with patients and has a special spot for her my heart for geriatric care.  Bobbie was born and raised right here in Austin, Texas. She enjoys the outdoors, spending time her family and warm weather!

Sam Morgan, APRN, DNP

Sam is a Doctor of Adult/Geriatric Nursing Practice. Sam graduated from the University of Michigan-Flint in 2017. Prior to joining the Austin Geriatric Specialists team, Sam had a 10-year history as a registered nurse in the skilled nursing and long-term care environment, and continues to have a passion for providing individualized and evidenced-based healthcare to the geriatric community. When he is not working, Sam enjoys all sports, traveling, reading, and spending time with family.

Kim Nunez, MSN, APRN, NP-C

Kim is a board-certified Adult Nurse Practitioner who specializes in the care of older adults with chronic health issues.  She holds her board certification from the American Academy of Nurse Practitioners and is licensed by the State of Texas. She earned both her bachelor’s degree and master’s degree in nursing at the University of Texas Health Science Center in Houston, Texas.  

Prior to becoming a nurse practitioner, Kim gained experience in critical care as a registered nurse.  She is passionate about working with the older population. In her free time, Kim enjoys spending time with family and friends, boating, and reading.

Hong-Ngoc Pham, MSN, APRN, AGCNS-BC

Hong is a board-certified Adult-Gerontology Clinical Nurse Specialist. She obtained her RN and MSN from the University of Texas at Austin. Prior to joining Austin Geriatric Specialists, Hong worked in the field of oncology. She has a long-held interest in health promotion and wellness since serving as a Peace Corps Health Volunteer in 2008-2010. Hong is passionate about providing compassionate, evidence-based and holistic care to aging individuals. She enjoys traveling, spending time her friends and family, and is an outdoor enthusiast. 

Audra Puffer, MSN, APRN, FNP-C

Audra is a board-certified Family Nurse Practitioner with a master’s degree in nursing from the University of Texas at Austin. Prior to pursuing her master’s degree, she worked for 4 years as a registered nurse caring for hospitalized patients. Audra is passionate about providing compassionate, evidence-based and holistic care to the geriatric population. In her spare time, she enjoys spending time with her friends and family, reading, and exploring more of Austin.

Allison Russell, MSN, APRN, FNP-C

Allison is a Family Nurse Practitioner certified by the American Academy of Nurse Practitioners. She graduated with a Bachelor of Science in Nursing from Texas Tech University Health Sciences Center and Master of Science in Nursing from the University of Texas at Tyler. Prior to joining Austin Geriatric Specialists in 2017, she worked as a registered nurse in critical care.  As a native Austinite, Allison has a strong commitment to serving the healthcare needs of our growing community.

Jordan Sondgeroth, MSN, APRN, ACNS-BC

Jordan received her RN and MSN from the University of Texas at Austin. She is a certified Adult Clinical Nurse Specialist who has worked in family practice and long term care, taking care of both ambulatory and frail elders since her graduation. She has been with Austin Geriatric Specialists since 2012 and enjoys promoting quality of life in geriatrics.

Joan Speer, PA-C

Joan Speer is a board certifed Physician Assistant who graduated with her B.S. in Allied Health from the University of Texas Southwestern Medical School.  She has 20+ years of experience working with geriatric patients in Central Texas.  She joined Austin Geriatric Specialists in 2014, after working for 5 years with Harden Healthcare.  She is married and has two wonderful children.

Joyce Tseng, MSN, APRN, AGCNS-BC

Joyce is an advanced practice registered nurse and Adult Health-Gerontology Clinical Nurse Specialist - board certified. A proud Taiwanese-American, born and raised in Texas, Joyce is a two time graduate of The University of Texas at Austin. Joyce is a member of the Austin Advanced Practice Nurses Association and Sigma Theta Tau. Through her work, Joyce offers a holistic, patient-centered approach with a focus on health promotion, acute and chronic disease management, and patient education. Prior to joining AGS in 2017, Joyce has worked in Skilled nursing facilities, long term care, and home health/transitional care. She has a passion for geriatric care and palliative care. In her downtime, Joyce enjoys hiking, gardening, and spending time with her family, friends, her dogs and chickens.

Jennifer Ulliman, MSN, APRN, FNP-C

Jennifer is a board-certified Family Nurse Practitioner through the American Association of Nurse Practitioners. She received her master’s degree through Texas State University and joins the AGS team in 2019 with 8 years of experience as a critical care registered nurse. She received her Bachelor of Science in Nursing from the University of Kentucky. Her passion has always been working with the geriatric population to provide holistic, evidenced-based care. In her spare time, Jennifer enjoys running, traveling, spending time with her friends, cheering on her Kentucky Wildcats in basketball, and playing with her dog, Chloe.

Suong Van, MSN, APRN, FNP-C

Suong received her Bachelor of Science in Nursing from Texas A & M University of Corpus Christi and her Master of Science in Nursing from the University of Texas at Arlington. She is board certified as a Family Nurse Practitioner. She has 13 years of experience as a board certified cardiovascular registered nurse at Ascension Seton Medical Center in Austin before joining the team. In her free time, she enjoys running, traveling, and spending time with her husband and two children. 

Emily Wallace, MSN, APRN, FNP-C

Emily is a board certified Family Nurse Practitioner  accredited by the American Academy of Nurse Practitioners. Emily received her Bachelor’s and Master’s in nursing from Texas A&M University. Prior to joining Austin Geriatric Specialists, Emily worked as a critical care nurse for eight years specializing in trauma and surgical patients.  She developed a love for geriatric care throughout her nursing career. Emily’s mission is to deliver exceptional patient-centered care across the lifespan that focuses on health promotion, disease prevention, and empowers individuals to become actively involved in their health care choices.In her free time, Emily enjoys spending time outside with her husband, son, and two dogs.

Ryan Webb, MSN, APRN, ACNS-BC

Ryan received his RN and MSN from the University of Texas at Austin and is a board-certified Adult Gerontology Clinical Nurse Specialist. He is passionate about providing a holistic approach to treating acute and chronic conditions for the aging population in Central Texas. In his spare time, he enjoys spending time with his wife and son and staying active outside. 

David Witty, MSN, APRN, FNP-C

David is a board-certified Family Nurse Practitioner with a master’s degree in nursing from The University of Texas at Austin.  Prior to completing his studies at UT Arlington, he received certifications in advanced wound and ostomy management. He has worked in the wound and ostomy department at South Austin Medical Center managing chronic wounds, traumatic injuries, ostomies, and fistulas. His clinical interests include diabetes & endocrinology, orthopedics, and functional medicine.  In his spare time, he enjoys hikes with his dog, cooking, gardening, traveling, and working on his house.

Ping Ye, MSN, APRN, ACNS-BC

Ping graduated from the University of Texas at Austin with a MSN in nursing in 2007. She is a certified Adult Clinical Nurse Specialists who has worked primarily in long term care, taking care of frail elders since her graduation. She joined Austin Geriatric Specialists in May 2009 and continues to focus her practice in the area of Geriatrics.

Jia Zhang, MSN, APRN, AG-ACNP 

Jia is a board-certified Adult-Gerontology Acute Care Nurse practitioner with a Master’s degree in nursing from Grand Canyon University at Arizona. Prior to becoming a Nurse practitioner, she worked in an acute care hospital and has 11 years of experience as a registered nurse in a variety of area including ICU, ER, Medical/Surgical and Rehabilitation. She is proud to join Austin Geriatric Specialists and the ability to provide compassionate care within the geriatric population. In her free time, Jia enjoys reading, traveling, spending time with her family.

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