William Parsons, M.D.
NPI 1811905417 · Dermatology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Parsons, M.D. is a Dermatology Physician provider in San Antonio, TX (NPI 1811905417).
Provider details
- NPI number
- 1811905417
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- F2387 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
3,717 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,494 | $6 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 814 | $86 |
| Destruction of Precancer Skin Growth, 15 Or More Growths17004 | 538 | $158 |
| Biopsy of Related Skin Growth, First Growth11102 | 364 | $94 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 276 | $52 |
| Biopsy of Related Skin Growth, Each Additional Growth11103 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 48 | 36 |
| Doxycycline Hyclate | 38 | 16 |
| Clobetasol Propionate | 32 | 17 |
| Hydrocortisone | 24 | 11 |
| Acyclovir | 15 | — |
| Desonide | 11 | — |
| Mupirocin | 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 , 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.
$5,310 across 19 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
Registry dates
- Enumerated
- 2006-08-03
- Last updated
- 2014-02-07
Frequently asked questions
- What is William Parsons's NPI number?
- William Parsons's National Provider Identifier (NPI) is 1811905417, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Parsons's specialty?
- William Parsons is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is William Parsons located?
- William Parsons's practice location on file with NPPES is 7832 Pat Booker Rd., San Antonio, TX 78233-2601.
- What is William Parsons's phone number?
- The practice phone number listed in the NPPES registry for William Parsons is (210) 657-9338.
- Does William Parsons accept Medicare?
- William Parsons is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Parsons's NPI active?
- Yes — William Parsons's NPI (1811905417) is active in the NPPES registry as of the last update on 2014-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.