Mark Withrow, MD
NPI 1255338547 · Obstetrics & Gynecology Physician · Kingsport, TN
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Withrow, MD is a Obstetrics & Gynecology Physician provider in Kingsport, TN (NPI 1255338547).
Provider details
- NPI number
- 1255338547
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101274055 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
6 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
34 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $81 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 12 | $105 |
Typical Medicare-allowed amounts for these services range $81–$105 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 30 | 12 |
| Clobetasol Propionate | 25 | 13 |
| Medroxyprogesterone Acetate | 16 | — |
| Progesterone, Micronizedbrand: Progesterone | 15 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$289 across 14 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (5)
- 320 Bristol West Blvd Ste 2cBristol, TN 37620-8773Phone: (423) 844-1399Fax: (423) 844-1397
- 301 Med Tech Pkwy Ste 200Johnson City, TN 37604Phone: (423) 794-1300Fax: (423) 794-1820
- 2002 Brookside DrSuite 300Kingsport, TN 37660-4634Phone: (423) 530-7900Fax: (423) 530-7901
- 105 W Park DrKingsport, TN 37660-3805Phone: (423) 224-3220
- 102 15th St Nw Ste 301Norton, VA 24273-1627Phone: (276) 439-1470
Registry dates
- Enumerated
- 2005-07-01
- Last updated
- 2025-09-03
- Certified
- 2025-09-03
Frequently asked questions
- What is Mark Withrow's NPI number?
- Mark Withrow's National Provider Identifier (NPI) is 1255338547, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Withrow's specialty?
- Mark Withrow is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Withrow located?
- Mark Withrow's practice location on file with NPPES is 105 W Stone Dr Ste 5d, Kingsport, TN 37660-3365.
- What is Mark Withrow's phone number?
- The practice phone number listed in the NPPES registry for Mark Withrow is (423) 247-7500.
- Does Mark Withrow accept Medicare?
- Mark Withrow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Withrow's NPI active?
- Yes — Mark Withrow's NPI (1255338547) is active in the NPPES registry as of the last update on 2025-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.