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Clinic Type

Internal Medicine

Address

Germantown, TN

Phone

901-726-0200

Email

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Internal Medicine
  • Primary Care
  • Geriatrics
  • Family Nurse Practitioner services
  • Gerontological Nurse Practitioner services

Team

  • Mark Castellaw, Internal Medicine — MD
  • S. Todd Overby, Internal Medicine / Primary Care — MD
  • Steven Wener, Internal Medicine / Primary Care — MD
  • Richard J. Jordan, Internal Medicine / Primary Care — MD
  • L. Alison Pomykala, Internal Medicine — MD
  • Dana J. Wright, Internal Medicine / Primary Care — MD
  • Jane Tyson, Gerontological Nurse Practitioner / Family Nurse Practitioner — FNP-BC / GNP
  • Kamyrn Wong, Nurse Practitioner — NP
  • Susan E. Rice, Family Nurse Practitioner — FNP-BC / FNP-C

Insurance & Payment

Languages Spoken

FAQs

What services does The Medical Group offer?

Internal Medicine and Primary Care, with providers offering geriatrics and family nurse practitioner services.

What is The Medical Group?

The Medical Group is a Germantown Primary Care Clinic that provides internal medicine and primary care services.

Who are the providers at The Medical Group?

The Medical Group features physicians and clinicians including Dr. Mark A. Castellaw, Dr. Steven Overby, Dr. Wener, Dr. Richard James Jordan, Dr. Lora Alison Pomykala, Dr. Wright, Jane Tyson, and Susan Rice, among others.

What services does Dr. Mark Castellaw offer?

Dr. Mark Castellaw specializes in Internal Medicine and treats acute and chronic health conditions.

What services does Dr. Steven Overby offer?

Dr. Steven Overby specializes in Internal Medicine and Primary Care.

What services does Dr. Wener offer?

Dr. Wener specializes in Internal Medicine and Primary Care at The Medical Group.

What services does Dr. Richard Jordan offer?

Dr. Richard James Jordan specializes in Internal Medicine and Primary Care.

What services does Dr. Lora Pomykala offer?

Dr. Lora Alison Pomykala is a board-certified physician who specializes in Internal Medicine and treats acute and chronic conditions in adults and teens 14 and older; practices at Baptist Medical Group in Germantown, TN.

What services does Dr. Wright offer?

Dr. Wright specializes in Internal Medicine and Primary Care at The Medical Group.

What is Jane Tyson’s role?

Jane Tyson has been a gerontological nurse practitioner and family nurse practitioner at The Medical Group since 2006.

What is Susan Rice’s role?

Susan Rice has been a family nurse practitioner since 2022 and joined The Medical Group staff in 2024.

Photos

What Patients Say

Overall sentiment across review platforms: positive

  • Oak Street Health Germantown Primary Care Clinic: 4.7 out of 5 stars (120 reviews)

Patients praise

  • Friendly and knowledgeable staff
  • Comprehensive primary care and on-site diagnostic services
  • Effective patient communication and listening skills
  • Welcoming and clean environment

Common complaints

  • Limited publicly available negative feedback or complaints; Better Business Bureau notes business is not accredited.

"Having chronic health problems, I needed a good doctor I could trust. I have been a patient at The Medical Group for about 10 years. I love being able to get everything done at one office. They have excellent doctors, on site lab, X‑ray, CT, ultrasound, echo, and nuclear medicine."

Unilocal Review for The Medical Group

"I felt truly heard, and the advice given was clear, thoughtful, and reassuring."

LocalityBiz Review for Germantown Primary HealthCare

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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