Mark Sornson, M.D.
NPI 1629189550 · MOHS-Micrographic Surgery Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Sornson, M.D. is a MOHS-Micrographic Surgery Physician provider in San Diego, CA (NPI 1629189550).
Provider details
- NPI number
- 1629189550
- Entity type
- Individual
- Primary specialty
- MOHS-Micrographic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A69605 (CA)
Specialties & taxonomies
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
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
2,384 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 | 862 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 392 | $98 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 311 | $56 |
| Biopsy of Related Skin Growth, First Growth11102 | 214 | $102 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 141 | $135 |
| Biopsy of Related Skin Growth, Each Additional Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 81 | 49 |
| Fluorouracil | 39 | 38 |
| Ketoconazole | 30 | 19 |
| Fluocinonide | 26 | 20 |
| Metronidazole | 25 | — |
| Acyclovir | 22 | — |
| Clobetasol Propionate | 22 | 14 |
| Imiquimod | 21 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,036 across 40 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
- 2006-08-31
- Last updated
- 2023-06-20
- Certified
- 2023-06-20
Frequently asked questions
- What is Mark Sornson's NPI number?
- Mark Sornson's National Provider Identifier (NPI) is 1629189550, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Sornson's specialty?
- Mark Sornson is listed in the NPPES registry with a primary specialty of MOHS-Micrographic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Sornson located?
- Mark Sornson's practice location on file with NPPES is 16950 Via Tazon, San Diego, CA 92127-1607.
- What is Mark Sornson's phone number?
- The practice phone number listed in the NPPES registry for Mark Sornson is (858) 521-2393.
- Does Mark Sornson accept Medicare?
- Mark Sornson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Sornson's NPI active?
- Yes — Mark Sornson's NPI (1629189550) is active in the NPPES registry as of the last update on 2023-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.