Mark Sowell, DPM
NPI 1679517528 · Primary Podiatric Medicine Podiatrist · Nacogdoches, TX
Enrolled with Medicare as Practitioner - Podiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Sowell, DPM is a Primary Podiatric Medicine Podiatrist provider in Nacogdoches, TX (NPI 1679517528).
Provider details
- NPI number
- 1679517528
- Entity type
- Individual
- Primary specialty
- Primary Podiatric Medicine PodiatristPodiatric Medicine & Surgery Service Providers
- Credential
- DPM
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1449 (TX)
Specialties & taxonomies
Podiatric Medicine & Surgery Service Providers
Podiatric Medicine & Surgery Service Providers
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,320 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 | 1,282 | $87 |
| Detection Test By Nucleic Acid for Organism, Amplified Probe Technique87798 | 1,105 | $34 |
| Removal of Fingernails Or Toenails, 6 Or More Nails11721 | 1,090 | $42 |
| Detection Test for Candida Species (yeast), Amplified Probe Technique87481 | 316 | $34 |
| Removal of Noncancer Thickened Skin Growth, 2-4 Growths11056 | 149 | $77 |
| Detection Test By Nucleic Acid for Multiple Organisms, Amplified Probe(s) Technique87801 | 97 | $69 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 50 | 40 |
| Gabapentin | 11 | — |
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.
$23 across 1 record (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
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2011-12-14
Frequently asked questions
- What is Mark Sowell's NPI number?
- Mark Sowell's National Provider Identifier (NPI) is 1679517528, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Sowell's specialty?
- Mark Sowell is listed in the NPPES registry with a primary specialty of Primary Podiatric Medicine Podiatrist (Podiatric Medicine & Surgery Service Providers).
- Where is Mark Sowell located?
- Mark Sowell's practice location on file with NPPES is 3316 N University Dr, Nacogdoches, TX 75965-2632.
- What is Mark Sowell's phone number?
- The practice phone number listed in the NPPES registry for Mark Sowell is (936) 559-1700.
- Does Mark Sowell accept Medicare?
- Mark Sowell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Sowell's NPI active?
- Yes — Mark Sowell's NPI (1679517528) is active in the NPPES registry as of the last update on 2011-12-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.