TLC Healthcare Companies

TLC Long-Term Care Medical Providers

Medical Providers


Scott M. Bolhack, MD, MBA, CMD, CWS, FACP, FAAP
Chief Executive Officer
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Scott Bolhack, MD, CMD, CWS, MBA, FAAP, FACP, has been in practice in Tucson since 1992. He is board certified in internal medicine, hospice and palliative care, and pediatrics. He recently became wound care certified and is the primary provider at The Wound Care Center at Northwest Hospital.

Dr. Bolhack speaks nationally on the subject of rehabilitation in nursing homes and has gained extensive experience in the area of geriatrics. Dr. Bolhack has additional experience as a medical director for nursing homes, assisted living facilities, hospice, and now at the Wound Care Center at Northwest Hospital.

Margaret Brown , MD

Dr. Margaret Brown is a board certified family physician who joins TLC from her recently completed geriatric fellowship at the University of New Mexico. Originally from the Midwest, her medical practices have included venues in private family practice and emergency medicine in the West and Southwest, including several within Arizona. From 1991 to 1995, Dr. Brown served as a Medical Officer in the U. S. Navy. Within TLC, she will see patients in skilled nursing facilities in addition to various community settings under the Pain & Palliative Medicine Practice.

Karen M. Chandler, MD

Dr. Chandler is board certified in Family Medicine and in Hospice and Palliative Medicine. She comes to TLC from Winston-Salem, NC, where she was Associate Medical Director of Hospice & Palliative Care Center, and Medical Director of the Carousel Center for Pediatric Palliative Care. She also served as an Assistant Clinical Professor in the Department of Family Medicine at Wake Forest University Baptist Medical Center. Her previous practice experience includes primary care, long-term care, and public health. She speaks nationally on various topics, especially communication issues in palliative care, and pediatric palliative care.

Myunghan Choi, PhD, MPH, APRN, BC

Dr. Choi obtained her Adult Practice Nurse Practitioner certificate from Arizona State University in 2008. Four years prior to that, Dr. Choi earned a PhD from the College of Nursing at the UofA in 2004. That same year, she obtained a post-master’s certificate in gerontology. She also has a Master’s in Public Health degree. Prior to moving to Arizona, Myunghan was a home care nurse practitioner in South Korea. Dr. Choi has performed significant research related to geriatric care issues and has published numerous articles and presented extensively.

Neva Crogan, PhD, CNS-BC, GNP-BC, FNGNA

A systems approach to improving the nutritional status and quality of life for nursing home residents is the nursing and research focus for Dr. Neva Crogan (Pomilla). Dr. Crogan received her PhD in 1998 from Washington State University. She is a master’s prepared gerontological clinical nurse specialist (ANCC certified), a geriatric nurse practitioner and a nursing home expert with extensive hands-on experience. Dr. Crogan first worked as a nurse educator training nursing home staff in the care of older adults; then as a Washington State nursing home inspector ensuring quality care and compliance with state and federal regulations. Dr. Crogan also has led a nursing department as Director of Nursing Services in a 120-bed skilled nursing facility. Currently, she teaches and conducts Gerontological research, acts as a consultant and expert reviewer for nursing homes and attorney groups, and serves as Co-Editor of NGNA’s section of Geriatric Nursing. Dr. Crogan’s scholarly work includes more than 40 peer-reviewed articles addressing nutrition care of older adults in nursing homes plus cutting edge research that addresses the current and future needs of older adults living in nursing homes.

Anna DeSimone, MSN/FNP-C

Anna returns to TLC HealthCare™ Companies with experience working in the acute care setting as a hospitalist provider where she rounded on patients on the medical, surgical and ICU units. Anna has a Master of Science degree in Nursing and earned her family nurse practitioner certification from the University of Phoenix in 2003. She has previous nursing experience in the acute rehabilitation and hospices arenas. In addition to her role with TLC providing care to patients in skilled nursing facilities, Anna also provides primary care services to patients at an acute psychiatric inpatient setting.

Mel Hector, MD, CMD. FAAFP
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Dr. Hector brings a wide breadth of experience to the TLC practice. He obtained his medical degree from the University of Missouri, is a Certified Medical Director, and is a past Clinical and Research Fellow in Geriatrics at Johns Hopkins Health Systems. He was also an Assistant Professor of Medicine at the University of Missouri. He is board certified in family practice and earned a Certificate of Added Qualification in Geriatric Medicine. Dr. Hector’s past work experience includes private practice, founding/leadership roles in medical groups/independent practice associations, and is a past Chief of Staff of Northwest Medical Center. Dr. Hector has been named twice in Naifel and Smith’s “The Best Doctors in America”. He maintains memberships in numerous associations and academies.

George Hobeich, MD

Dr. Hobeich, a local physician, has joined TLC on a part-time basis. Dr. Hobeich has a wide breadth of clinical experience and background in our community. His career has spanned pediatric care to geriatrics. Originally from Lebanon, Dr. Hobeich received his Medical Doctor degree in Juarez, Mexico and did his internship and residency in Texas. He maintains hospital privileges at four hospitals and continues many roles including department head and clinical associate professor.

Les Kirk, MD

Dr. Kirk attended Northern Arizona University for his undergraduate degree and then went to medical school at the University of Oregon. Dr. Kirk served in the United States Army as a Battalion Surgeon in Bamberg, Germany. Upon his return to the States, he served as a Commander at the Sierra Army Medical Hospital in California. After that, he transitioned into private medical practice in Arizona and New Mexico. His background includes experience as a Associate Medical Director for hospice and the Chairman of the Department of Internal Medicine. Administratively, Dr. Kirk worked as the Vice President of the Medical Staff at Kino Community Hospital, the Medical Director of Pima Health Plan and the Chairman of the Department of Medicine for Tucson Medical Center. Dr. Kirk is a board certified internist and will be working part-time for TLC in the skilled nursing facility setting as well as the pain and palliative medicine practice.

Virginia LeBaron ACNP-BC, AOCN

Virginia began her nursing career as a clinical staff nurse at the National Institutes of Health in Bethesda, Maryland where she worked first on a neuromedical/neurosurgical unit, and then with adult oncology and bone marrow transplant patients. She received her BSN from the University of Virginia and her Master’s from the University of Maryland. Before relocating to Tucson this past July she worked as the nurse practitioner with the hospital based palliative care team at Georgetown University Hospital in Washington, D.C. She currently holds a joint appointment with University Medical Center and the University of Arizona College of Nursing, and has been actively involved with the development of the palliative care education initiatives and pilot project at University Medical Center. She also volunteers with the International Network for Cancer Treatment and Research, helping to facilitate palliative care education in developing countries.

Susan Mani, A/GNP

Susan comes to TLC after spending the last five years in Cochise County, Arizona. While in Southeast Arizona, Sue worked in a primary care clinic setting and also did nursing home rounds. Prior to that, Sue was part of the Surgical ICU-Heart Team at St. Mary’s Hospital in Tucson. She has also spent extensive time conducting research and providing care in places like Nepal, Honduras, and El Salvador. She has completed internships in Primary Care, Psychiatry, Acute Care, and Hospice. Sue is in the process of completing a Doctor of Naturopathy program.

David Massanari, MD

Dr. Massanari joins TLC with years of experience and community service. He attended medical school at the University of Illinois and completed a residency in Family Practice at York Hospital in Pennsylvania. He earned the Certificate of Added Qualification in Geriatric Medicine in 1990. He serves as a Diplomat of the American Board of Family Medicine and is involved in a wide variety of professional organizations including his role as an instructor in Ambulatory Care and Prevention at Harvard Medical School. Dr. Massanari has published articles on a variety of topics including quality improvement, managed care and the role of the physician in primary care. In his role with TLC, Dr. Massanari will see patients at the skilled nursing facilities in Green Valley as well as in Tucson.

Jennifer Ramin, MSN, APRN-BC, ACHPN
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Jennifer joins TLC with extensive pain and palliative medicine experience, providing care for patients at home, in the hospital, and in many community settings. Before she was a nurse practitioner, she practiced as a hospice nurse in Cambridge, Massachusetts. She trained at the Massachusetts General Hospital, Institute of Health Professions in Boston, MA. Her previous practice emphasized care of patients with HIV/AIDS. Fluent in Spanish, she has a special interest in cross-cultural issues. Ms. Ramin is also adjunct faculty at the University of Arizona College of Nursing.

Yuri Safronov, NP

Yuri recently completed the FNP program at Northern Arizona University. His immediate prior position was with UMC as one of their staff RNs (2/03-10/06). In that capacity, he worked in Telemetry, Med/Surg, Trauma, Ortho, and Kidney Transplant. Prior to that position, he was employed by Handmaker (7/99-9/03) and worked on their skilled unit and in their inpatient hospice unit. Yuri was a medical doctor in Latvia prior to moving to the US in 1998. His wife is an anesthesia resident at the U of A. Yuri will be full-time with TLC and will be caring for patients at La Colina and in Adult Care Homes.

Kathy Sherman, GNP

Kathy Sherman graduated from The Massachusetts General Hospital Institute of health Professions with a Masters Degree in Nursing in 1994 and has been an ANCC certified Geriatric Nurse Practitioner for 13 years. Prior to moving to Arizona in 2003 and joining TLC Kathy worked in the nursing home setting and in home care for Boston City Geriatrics and Home Care, Boston University Geriatrics Service and Hampden County Medical Group. She has a special interest in psychiatric and behavioral problems associated with chronic mental illness and dementia, as well as managing chronic illness.

Gregory Stevenson, FNP-C, BS, MSN, MC

Gregory earned his Master’s of Science in Nursing and Family Nurse Practitioner from the University of Phoenix in 2006. He also earned a Master of Community Counseling in 2000 and a Bachelor’s of Science in Microbiology and Immunology from the University of Arizona in 1997, after he completed his undergraduate education as a Registered Nurse from the University of New York. Gregory has an extensive military background having served in the United States Air Force from 1980 through 1991. He spent time in the Middle East as part of Desert Storm and Desert Shield as well as in remote areas of South America and Southwest Asia. Prior to earning his degree as a nurse practitioner, Gregory worked as a Registered Nurse in a Tucson skilled nursing facility caring for patients on ventilators. He has significant experience in home health care. Additionally, he has worked in the ICU/CCU and ED setting at local hospitals and USAF hospitals. For TLC, he will be caring for patients in skilled nursing facilities.

Christina Valenta, A/GNP, MBA

Chris Valenta, A/GNP, began her nursing career in 1974 in Illinois. Employed with TLC HealthCare™ Companies since 2000, she brings many years of clinical and administrative experience to the practice. Chris has worked for several medical groups throughout Pima County that focus on geriatric care. Specializing in chronic pain issues and wound care management, she also assists Dr. Bolhack in his outpatient clinic in Oro Valley. She is currently enrolled as a Doctoral student at the University of Arizona.


Shu-Fen Wung, RN, PhD, ACNP, BC
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Dr. Wung joins TLC with impressive academic credentials. She is currently an Associate Professor, University of Arizona, College of Nursing. In her academic role, Dr. Wung is conducting cardiovascular clinical research. During her training, Dr. Wung completed clinical rotations in cardiology and intensive care/internal medicine. She earned her Acute Care NP degree and her PhD. Degree from the University of California–San Francisco. She has presented often on cardiac care issues and is published in a number of journals and publications.