Advanced Practice Provider Directory
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Advanced Practice Providers by Practice Area
The following is a directory of Advanced Practice Providers practicing at UK HealthCare:
Acute Care Surgery, Trauma and Surgical Critical Care
- Ethan T. Beasley, APRN
- Brittany N. Bergman, DNP, APRN
- Sara B. Carter, APRN
- Jill M. Clemmons, APRN, DNP, MSN, ACNP-BC, CCRN
- Ashley N. Cook, APRN
- Ashley J. Corum, APRN
- Denise N. Feldman, APRN
- Kenneth R. Hawkins, APRN
- Emma K. Kroger, DNP, APRN
- Casey W. Mingua, APRN, DNP
- Morgan A. Payne, PA
- Bridget J. Pennell, APRN
- Yvonne P. Rice, DNP, APRN
- Ardis M. Roederer, DNP, APRN
- Renee Y. Rogers, DNP, APRN
- Jillian E. Scott, PA
- Candice E. Travers, APRN
- Nathan G. Yuen, APRN
Addiction and Substance Abuse
Addiction Medicine
Adolescent and Young Adult Oncology
Adolescent Medicine
Adult Congenital Heart Disease
Allergy
Anesthesiology
- Richard A. Abney, CRNA
- Chad R. Adams, CRNA
- Norrah J. Alachkar, APRN, CNS, DNP
- Justin H. Anderson, CRNA, DNP
- Marshall E. Anderson, CRNA
- Emily L. Ash, CRNA, DNP
- James J. Bilan, CRNA
- Analise K. Blanchard, CRNA, DNP
- Jessica L. Bodenhamer, DNP, CRNA
- Stephanie Boulay, ARPN
- Nicole A. Brumfield, APRN
- Chase R. Buck, DNP, CRNA
- Gregory L. Buckler, CRNA
- Katie L. Burns, CRNA
- Megan B. Calhoun, CRNA, DNP
- Richard D. Carmickle, CRNA
- Crystal L. Clark, CRNA
- Gayle "Nicole" Coffman, APRN
- Jessica W. Comstock, APRN
- Richard W. Cooke, CRNA
- Wade R. Covington, CRNA
- Amanda B. Crafton, CRNA
- Robert J. Crafton, CRNA
- Stace D. Dollar, CRNA
- Audrey M. Dropkin, CRNA
- Emily M. Duncan, DNP, CRNA
- John M. Edwards, III, CRNA
- Olivia M. Ethington, APRN, DNP
- Sarah E. Farmer, DNP, CRNA
- Charles J. Fletcher, CRNA
- Brennan J. Fraley, CRNA
- Laurel M. Fulgham, DNP, APRN
- John R. Gambrel, CRNA
- Mark W. Gordon, CRNA
- Michael M. Goss, DNP, CRNA
- Cody Michael Grant, CRNA
- Tasha R. Groves, APRN
- Michael D. Hackett, CRNA
- Mary Ann Hall, APRN
- Ciana J. Hardy, CRNA
- Lauren M. Harrett, APRN
- William Z. Hattle, CRNA
- Margaret A. Hazelett, CRNA
- Hailey A. Holzapfel, CRNA, DNP
- Cindy K. Hsieh Melton, CRNA
- Mathew J. S. Hummel, CRNA
- Christopher L. Hurley, CRNA
- Rachelle A. Hurley, CRNA
- Tracie L. Jackson, APRN
- Krystal R. Kackley, APRN
- Joshua A. Kidd, CRNA
- James F. Laber, III, CRNA, DNP
- Tamra M. Langley, APRN
- Jason M. Larsen, CRNA, DNAP
- Audra R. Lee, DNP, CRNA
- Anthony J. Looney, APRN
- Michael D. Matthews, DNP, CRNA
- Kelly E. McConathy, APRN
- Meghan C. McDonald, DNP, CRNA
- Kelly J. Meyers, APRN
- Lauren E. Miller, CRNA, DNP
- Lisa K. Miller, CRNA
- Mark A. Miller, CRNA
- Matthew R. Morse, CRNA
- Justyn A. Muzic, CRNA
- Justin T. Neidig, CRNA
- Paula K. O'Bannon, CRNA
- Cathy N. Oakley, CRNA
- Jennifer A. Parks, CRNA
- Tarang R. Patel, CRNA
- Mee Heh K. Perry, CRNA
- Elizabeth D. Phillips, DNP, CRNA
- Tony J. Poppel, CRNA
- Oksana S. Povroznik, CRNA
- Hannah R. Powell, CRNA
- Jamie D. Raglin, APRN
- Whitney S. Rice, APRN, DNP
- Ashley D. Riley, APRN
- Margaret Moore Rivers, DNP, APRN
- Nicole Sanders, APRN
- Karen S. Scott, APRN
- Tony E. Sell, CRNA
- Heather A. F. Sheehan, APRN
- Meredith Owens Sherer, APRN
- Sarah E. Shreffler, CRNA
- Ronald S. Slone, CRNA
- Melissa K. Soper, APRN
- Starr N. Sparks, CRNA
- Stephanie M. Stout, CRNA
- Jessica L. Tabor, CRNA
- Stephanie P. Tesar, APRN
- Jason E. Tewmey, PA
- Jennie E. Trautwein, APRN
- Joshua B. Vandy, CRNA
- Olga Vulakh, DNP, APRN
- Grant A. Watt, CRNA
- Keesha O. Watts, CRNA
- Tyler M. Wellman, CRNA
- Brooke E. Wilczak, CRNA, DNP
- Harrison S. Wilkins, CRNA
- Eugenia L. Wilson, APRN
- Courtney D. Wiseman, DNP, CRNA
- Elizabeth Prewitt Wynstra, CRNA
- Jennifer A. Yates, APRN
- Albert N. Yongbang, CRNA
- Macy L. Young, APRN
Aneurysms and Arteriovenous Disorders
Anticoagulation
Audiology
Bariatric Surgery
Bone Cancer Team
Botulinum Program
Breast Cancer Team
Cardiology - Pediatric
Cardiovascular & Thoracic Surgery
- Jennifer G. Bauman, DNP, APRN
- Tena S. Burke, APRN
- Kaitlin W. Clay
- Kelli A. Curry, APRN
- Michael T. Dugan, PA-C
- Anna A. Gerard, PA
- Kristyn L. Gordon, APRN
- Paige Jenkins, MSN, APRN, FNP-C
- Harold M. Jenks, APRN
- David M. Jones, PA-C
- Danielle M. Mayton, PA-C
- Alexander Sophia Ross, PA
- Michael B. Soto, APRN
- Samantha M. Terry, PA
- Jered D. Waggoner, PA
Cardiovascular & Thoracic Surgery - Pediatric
Cardiovascular Medicine
- Doris Whitney Adams, APRN
- Aaron Adkisson, PharmD
- Madeira Almeter, PharmD, BCACP, CACP
- Katherine R. Alnabelsi, PA-C
- Stephanie Lynn Auxier, APRN
- Nichole E. Baker, APRN
- Kelly Ryan Bohl, DNP, APRN, CNS
- Amanda S. Carney, DNP, APRN
- Terri Cook, PharmD
- Mary J. Cowherd, PA-C
- Mary M. Czarapata, APRN
- Candice D. Falls, PhD, APRN
- Peggy J. Hardesty, APRN
- Kimberly M. Hardin, APRN
- Tonya Gail Hatfield, APRN
- Lynsey Henderson, APRN
- Mark Huffmyer, PharmD
- Chadwick D. Hunt, APRN
- B. Seth Leeds, PA-C
- Caroline M. Little, PA
- Gregory S. McLoney, PA
- Emily E. Merritt, PA
- Heather F. Oaks, APRN
- Julie M. Reinstatler, APRN
- Mary A. Richardson, PA-C
- Leesa S. Schwarz, APRN
- Anna M. Sketch, APRN
- Brittany Rae Smith, PharmD
- Paula A. Works, DNP, APRN, FNP-BC, AGACNP-BC
- Carla A. Zacher, APRN
Clinical Cardiology
Cognitive disorders
Congenital Heart Disease - Pediatric
Counseling
Critical Care - Pediatric
Critical Care Anesthesia
Critical Care Medicine
Cystic Fibrosis
Developmental Pediatrics
Diabetes Treatment
Digestive Diseases and Nutrition (Gastroenterologists)
- Kimberly K. Bender, APRN
- Mary Broadbent, DNP, APRN
- Macy M. Godman, PA-C
- Angela B. Hensley, DNP, APRN, FNP-C
- Lucas J. Kennedy, PA-C
- Latoya L. Lamb, APRN
- Kristen L. Makowski, DNP, APRN-BC
- Casie M. Mayne, PA-C
- Sabita D. Pokhrel, APRN
- Pamela B. Schneider, APRN
- Morgan E. Stacey, DNP, APRN
- Amy B. Stuffelbeam, PA-C
- Maria E. Walters, APRN, DNP
- Elizabeth M. Wright, APRN
- Andrea M. Yonel, PA
Ear Nose & Throat (Otolaryngology) - Pediatric
Ear, Nose and Throat (Otolaryngology)
Electroconvulsive Therapy (ECT)
Emergency Medicine
- Kristin L. Abboud, SANE
- Amy A. Bowman, PA-C
- Patti Jo Bowman, PA-C
- Nathan A. Brown, PA
- Kayla D. Burton, SANE
- Leslie R. Elliott, PA
- Alicia O. Gatterdam, APRN
- Mary K. Goodman, SANE
- Jamie L. Green, SANE
- Kelli N. Griffin, SANE
- Megan D. Hensley, APRN
- Kate M. Hilliard, PA
- Pamela R. Kouns, PA-C
- Ruby A. Madden, PA-C
- Abigail J. McDermott, PA
- Geoff P. McGowen, APRN, MSN
- Terry L. New, PA-C
- Ashton C. Ogle, PA
- Jean Nicole Perkins, SANE
- Allison B. Raymond, APRN
- Emily J. Riley, APRN
- Paige E. Rohe, PA-C
- Jennifer D. Smith, APRN
- Kayla C. Spalding, SANE
- Scott T. Wells, APRN
- Janice G. Woolum, APRN
Emergency Medicine - Pediatric
Endocrine Surgery
Endocrinology
Endocrinology - Pediatric
Family and Community Medicine
- Charlotte M. Adams, APRN, DNP
- Jennifer M. Batten, APRN
- Peyton M. Blanton, DNP, APRN
- James A. Bowlds, DNP, APRN
- Alexis M. Boyce, PharmD
- Michelle C. Carlo, APRN, FNP-C
- Rebecca R. Cole, APRN
- Kristeena M. Conkright, PA-C
- Jill E. Crawford, APRN
- Donna M. Creech, APRN
- Carrie M. Crum, APRN
- Jeffrey D. Fugate, APRN
- Tonya Kay Hadden, APRN, FNP-BC
- Laura S. Hughes, APRN
- Sheila A. Kendall, APRN
- Andrea J. Kohlman, APRN
- Brittani L. Meier, PA
- Cristal L. Miller, PA
- Jeremiah W. Noe, PA
- Maria D. Oexmann, APRN
- Melinda D. Rath, APRN
- Jessica L. Renfro, APRN
- Sara C. Reno, APRN
- Jessica R. Sass, MSN, APRN, FNP-C
- Louise K. Simms, PA
- Darshan Singh, PA
- Keith S. Turner, LCSW
- Melissa R. Walters, APRN
- Nicole K. Wilson, APRN
Family Medicine
Forensic Medicine - Pediatric
Gastroenterology - Pediatric
General and Thoracic Surgery - Pediatric
General Internal Medicine and Geriatrics
General Nephrology
General Surgery
- Christopher A. Bentley, PA-C
- Staci Bhalodi, PA-C
- Diandra N. Bowling, APRN
- Tamara E. Carey, APRN
- Jill M. Clemmons, APRN, DNP, MSN, ACNP-BC, CCRN
- Lauren M. Crockett, APRN, MSN
- Donna S. Damron, APRN
- Rebecca Doll, DNP, APRN
- Logan L. Goff, PA
- Brittany H. Monroe, APRN
- Casey L. Pasley, PA
- Sharon J. Pelfrey, APRN
- Stephanie T. Priest, DNP, APRN
- Yvonne P. Rice, DNP, APRN
- Crystal S. Rogers, APRN
- Renee Y. Rogers, DNP, APRN
- Amanda B. Thomas, APRN
Genetics and Metabolism - Pediatric
Geriatric Psychiatry
Gynecologic Cancer Team
Hand Surgery (Orthopaedic)
Head and Neck Cancer Team
Head and Neck Surgery
Headache and Pain
Heart Failure, MCS and Transplant Team
Hematology and Blood Marrow Transplantation Team
- Kaitlyn K. Bryson, PharmD
- Taylor A. Bunnell, APRN
- Bryant A. Clemons, PharmD
- Clyde Coleman, Jr., PharmD
- Christie Lynn Conley, APRN
- Brent A. Harris, PharmD
- Susan Kelly Harvey, APRN
- Kelly E. Lyons, APRN
- Amy L. Meikel, APRN
- Lara C. Morris, APRN
- Kayla J. Neace, APRN
- Katelyn A. Perkins, PA-C
- Pearl E. Peterson, APRN
- C. Jill Sewell, APRN
- Meredyth T. Smith, APRN
- Hailey J. Waggoner, APRN
Hematology and Oncology - Pediatric
Hepatology
Hip & Knee Replacement Team
Hospital Medicine
- Jennifer G. Bauman, DNP, APRN
- Cathryn M. Benson, APRN
- Michele L. Bodine, APRN
- Jenna J. Bodreau, PA
- Christopher T. Callihan, PA-C
- Gitana B. Cole, APRN
- Lynda G. J. Eckhardt, PharmD, MBA, BCPS, AAHIVP
- Candace N. Ferguson, APRN
- Clayton P. Gatterdam IV, PA
- Victoria K. Gross, APRN
- Anne E. Hickman, APRN
- Daniel R. Holden, APRN, AGAC-NP
- Jasmine C. Howard, APRN
- Christeen B. Ivy-Broaddus, DNP, APRN
- Shannon N. Kincaid, APRN
- Amanda C. Meyer, APRN
- Chelsea F. Mitchell, APRN, DNP
- Robert L. Morton, APRN, ACNP
- Lindsay A. Penn, PA-C
- Alison D. Power, PA-C
- Perdita L. Prater, APRN
- Eleanor L. Roth, PA
- Deena S. Shewekah, DNP, APRN
- Geri L. Sipe, DNP, APRN
- Valerie L. Sleeth, PA
- Jenna J. Stephens, PA
- Catherine Wong, APRN, ACNPC-AG
- Lisa C. Yearsley, DNP, APRN
Infectious Diseases
- Andrea Baker, LCSW
- Anne Bearse, LCSW
- Alisha M. Clemons, APRN
- Brent Cotter, PA
- Elizabeth S. Crance, PA-C
- Katherine S. Culbertson, APRN
- Laura M. De La Torre, APRN
- Lauren E. Downey, LPCC
- Steven K. Hough, PA
- Kelsey B. Jude, PA
- Sarah Michelle Kirsch, PA-C
- Virginia Shepherd-Tackett, APRN
- Joella Sizemore, APRN
- Tiffany S. Stivers, APRN
- Kayla M. Strother, APRN
- Melanie R. Zegar, PA
Interventional Pain
Licensed Clinical Social Worker
Medical Oncology
- Belinda S. Blair, APRN
- Holly R. Chitwood, DNP, APRN, FNP-C, AGACNP-BC
- Caitlin Crowder, PA-C
- Daneka S. Crump, APRN
- Katherine Y. Hanley, PA-C
- Kelly Dawkins Hawthorne, APRN
- Sarah R. Hines, APRN
- Karen Mulholland, RN, MSN, AOCNS, APRN
- Adria B. Myers, APRN
- Mary A. Phillips, APRN
- Shantelle L. Stokely, APRN
- Allison L. Wells, DNP, APRN
- Leah R. Yeager, APRN
- Rachael G. Young, APRN
Memory and Aging Program
Midwifery (Maternity Care)
Movement Disorders
Multidisciplinary Concussion
Neonatology
- Gina G. Barber, APRN
- Christy L. Bendix, APRN
- Katherine S. Bracey, APRN
- Augustine J. Chapin, APRN
- Alicia M. Chenail Friend, PA-C
- Brittany R. Collins, PA
- Katherine E. Fletcher, APRN
- Shelley R. Gover, APRN
- Janell F. Hacker, APRN
- Whitney J. Hammond, PA-C
- Lauren V. Jackson-Belcher, PA-C
- Brooklyn R. Johnson, DNP, APRN, CPNP-PC
- Genine R. Jordan, APRN
- Kendra L. King, PA-C
- Tria B. Kinnard, PA-C
- Sarah A. Longaker, APRN
- Jennifer D. Malchaski, PA-C
- Laura McLean, APRN
- Rhonda J. Petty, APRN
- Valerie D. Phebus, PA
- Brendan W. Richardson, PA-C
- Krista M. Sheehan, APRN, NNP-BC
- Patrick M. Tullis, PA-C
- Alexis M. Turner, APRN
- Amy M. Wallace, APRN
- Breanne P. Belleville, DNP, APRN
- Jill D. Young, APRN
- Marcy E. Zerr, APRN
Nephrology - Pediatric
Nephrology, Bone and Mineral Metabolism
Neurology
- Kenneth S. Baker III, APRN
- Anna K. Brown, PA-C
- Megan C. Budde, PA
- Brittany D. Castle, PA
- Julie A. Gurwell, PhD, PA-C
- Amanda C. Kelly, MMS, PA-C
- Kim Lowry, APRN, FNP-BC
- Maryam Mosharraf, APRN
- Lindsey E. Noll, PA-C
- Jamie L. Roberts, APRN
- Susan M. Sergent, PA-C
- Darcy Taddeo, PA
- Jennifer E. Vice, PA
- Brittany A. Young, APRN
Neurology - Pediatric
Neuroscience - Pediatric
Neurosurgery
- Mary G. Brown, PA
- Sarah M. Buschmann, DNP, APRN
- Kathryn (Katie) A. Casale, APRN, FNP-C
- Jill M. DeLair, PA-C
- Paula R. Dostaler, DNP, APRN
- Kyla Gilbert, APRN
- Ashley W. Guiliani, DNP, APRN
- Lindsey M. Hall, APRN, DNP
- Jenna Haupert, DNP, APRN
- Sarah J. Kindler, PA
- Hilary M. McCord, PA-C
- Lindsey M. Parker, PA-C
- Agatha L. Ramsey, PA
- Aimee E. Roddy, APRN
- Alyssa Sutton, DNP, APRN
Neurosurgery - Pediatric
NICU Graduate Program
Obstetrics and Gynecology
- Christine (Chrissie) S. Adams, APRN, CNM
- Briana R. Bell, APRN
- Kirsten Brown, WHNP-BC
- JoAnne B. Burris, APRN, CNM
- Melissa H. Courtney, APRN, CNM
- Mikayla A. Hare, DNP, APRN, FNP-BC
- Kate M. Harris, APRN, MSN
- Amy P. Hurley, APRN
- Kathleen S. Isaac, APRN, CNM
- Megan L. Maynard, APRN, CNM
- Hayden Murrell Meza, APRN, CNM
- Jessica L. Murray, DNP, APRN
- Mincha G. Parker, APRN
- Megan L. Sharp, APRN, CNM
- Wendy A. Simpkins, APRN
- Haley R. Smith, APRN, CNM
- Brandi A. Stanback, APRN
- Katherine B. Taulbee, APRN
- Donna S. Thompson, APRN, MSN
- Casey N. Whitehead, APRN, CNM
Obstetrics and Gynecology Maternal-Fetal Medicine
Oncofertility
Ophthalmology (Advanced Eye Care)
Optometry
Orthopaedic Spine Care
Orthopaedic Surgery
Orthopaedic Trauma
Palliative Care
Palliative Care - Pediatric
Pathology and Laboratory Medicine
Pediatric Long-Term Follow-up Clinic
Peripheral Arterial Disease
Physical and Occupational Therapy
Physical Medicine & Rehabilitation
Plastic Surgery
Primary Care
- Amber K. Ballard, APRN
- James A. Bowlds, DNP, APRN
- Barbara A. Calvert, APRN
- Megan B. Carter, DNP, APRN
- Martha E. Cook, DNP, APRN
- Jill E. Crawford, APRN
- Carrie M. Crum, APRN
- Audrey K. Darville, APRN, PhD
- Brooke E. Englert, DNP, APRN, FNP-C
- Carol E. Martin, APRN
- Susan R. Noel, APRN, DNP
- Emily E. Robinson, APRN
- Kevin M. Schuer, PA-C, DrPH
- Darshan Singh, PA
- Jane A. Smith, APRN
- Jane E. Weatherford, APRN
Primary Care Pediatrics
Psychiatry
- Deana J. Andrews, APRN
- Treven J. Back, DNP, APRN
- Jacqueline G. Barclay, APRN, PMHNP-BC
- Caroline C. Bowman, DNP, APRN
- Jeremy L. Chandler, PA-C
- Jerry K. Coleman II, PA
- Jennifer K. Connor Godbey, LCSW, MSW
- Heather N. Dennis, APRN
- Mareen C. Dennis, MS, LPP
- Lynda G. J. Eckhardt, PharmD, MBA, BCPS, AAHIVP
- Marc E. Frisiello, MS, EdS, LPCC, LCADC
- Ashleigh M. Gasparac, APRN
- B. Lindsey Graves, LCSW
- Holly N. Gray, DNP, APRN
- Aaron G. Harris, DNP, APRN
- Bethany F. Higgins, LCSW, MSW, CFS, CRS
- Nicole L. Jablonski, LPCC
- Hannah E. Johnson, PhamD
- Steve D. Johnson, PhD, LCSW, MSW
- Paige K. Juettner, PA-C
- Kristi G. Lamb, APRN
- Ingrid E. LaRrett, APRN
- Kyle B. Latimer, APRN, MSN-PMHNP
- Whitney C. Mayer, MSN, PMHNP-BC
- Danielle M. McPeak, APRN, DNP
- Jacklyn A. Mortensen, PA
- Emily S. Moseley, LCSW
- Hillary A. Nolan, APRN
- Matthew D. Noll, APRN
- Julie B. Perry, DNP, APRN
- Aqsa R. Qureshi, PA
- Adam M. Roe, PA-C
- Jessica M. Sorrell, LPCC
- C. Clinton Thomas, APRN
- Julie Joy Tincher, LCSW, MSW
- Jeannie L. Wilkins, APRN
Psychiatry - Child and Adolescent
Psychology
Pulmonary Critical Care and Sleep Medicine
- Shelby J. Bishop, APRN
- Walter Bounds, APRN
- Danielle A. Brewer, APRN, DNP
- Jillian L. Butcher, APRN
- Manpreet K. Datta, PA-C
- Brianna S. Fischer, APRN
- Nathan A. Garrett, APRN
- Ashley J. Gillstrap, DNP, APRN
- Christopher P. Hoffman, DNP, APRN
- Corinne J. Hook, APRN
- William B. James, APRN
- Kelsey R. Jobe, DNP, APRN
- Carrie H. Jones, APRN
- Brittany A. Kellum, DNP, APRN
- Lynn A. Kelso, APRN
- Anastasia E. Klotz, APRN
- Robert J. Lorion, APRN
- Matthew D. McCoy, APRN
- Jacob A. Moore, APRN
- Lauren M. Ochoa, APRN
- Susan R. Price, APRN
- Amy Lynn Salyer, DNP, APRN
- Sarah Sams, APRN
- GraceAnne D. Sharp, APRN
- Virginia W. Sowders, APRN
- Renee A. Spradlin, APRN
- Carson G. Swartz, DNP, APRN
- Leslie A. Thompson, APRN
- Cassandra W. Wheeler, APRN
- Amanda L. Ybanez, PA
Pulmonary Hypertension
Pulmonology - Pediatric
Radiology
Rheumatology
Rhinology
Sarcoma Team
Speech Language Pathology
Spine surgery
Spine Surgery (Neurosurgery)
Sports Medicine
Surgical Oncology
Surgical Oncology - Pediatric
Transplant - Kidney
Transplant - Liver
Transplant - Lung
Transplant - Pancreas
Transplant Surgery
University Health Service (UK Employees)
University Health Service (UK Students)
- Hannah M. Anderson, PA-C
- Cori E. Arena, APRN
- Kimberly A. Bennett, APRN
- Joanne E. Brown, DNP, APRN
- Shelley A. Chenault, APRN, CNM
- Jodi C. Durbin, APRN
- Kelly Hardin, MSN, APRN, FNP-C
- Kelsey J. Ice, APRN
- Christina D. McGlothlin-Boggs, APRN
- Rosemary Elizabeth Minnick, DNP, APRN
- Ashley N. Sparks, PA-C
- Debora K. Stromberg, APRN
- Andi A. Vance, APRN
- Cheryl E. Vanderford, PA
- Michele D. Walden, APRN-BC