Siavosh Vossough, M.D.
NPI 1922192111 · Dermatology Physician · Los Altos, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siavosh Vossough, M.D. is a Dermatology Physician provider in Los Altos, CA (NPI 1922192111).
Provider details
- NPI number
- 1922192111
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A61091 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,193 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 1,764 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 575 | $111 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 384 | $79 |
| Destruction of Skin Growth, 1-14 Growths17110 | 133 | $152 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 133 | $156 |
| Biopsy of Related Skin Growth, First Growth |
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 | 51 | 41 |
| Ketoconazole | 50 | 33 |
| Hydrocortisone | 36 | 36 |
| Clobetasol Propionate | 23 | 16 |
| Valacyclovir Hclbrand: Valacyclovir | 22 | — |
| Apremilastbrand: Otezla | 12 | — |
| Fluocinonide | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2008-05-27
Frequently asked questions
- What is Siavosh Vossough's NPI number?
- Siavosh Vossough's National Provider Identifier (NPI) is 1922192111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siavosh Vossough's specialty?
- Siavosh Vossough is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Siavosh Vossough located?
- Siavosh Vossough's practice location on file with NPPES is 851 Fremont Ave, Los Altos, CA 94024-5698.
- What is Siavosh Vossough's phone number?
- The practice phone number listed in the NPPES registry for Siavosh Vossough is (650) 949-2771.
- Does Siavosh Vossough accept Medicare?
- Siavosh Vossough is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siavosh Vossough's NPI active?
- Yes — Siavosh Vossough's NPI (1922192111) is active in the NPPES registry as of the last update on 2008-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.