Lewis Tanenbaum, MD
NPI 1083607808 · Dermatology Physician · Mill Valley, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lewis Tanenbaum, MD is a Dermatology Physician provider in Mill Valley, CA (NPI 1083607808).
Provider details
- NPI number
- 1083607808
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- G31735 (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
20 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
1,635 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 | 1,059 | $9 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 161 | $57 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 106 | $110 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 58 | $70 |
| Shaving of Skin Growth of Body, Arms, Or Legs, 1.1-2.0 Cm11302 | 44 | $133 |
| Shaving of Skin Growth of Body, Arms, Or Legs, More Than 2.0 Cm11303 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 21 | 17 |
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-26
- Last updated
- 2007-07-08
Frequently asked questions
- What is Lewis Tanenbaum's NPI number?
- Lewis Tanenbaum's National Provider Identifier (NPI) is 1083607808, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lewis Tanenbaum's specialty?
- Lewis Tanenbaum is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Lewis Tanenbaum located?
- Lewis Tanenbaum's practice location on file with NPPES is 535 Miller Ave, Mill Valley, CA 94941-2905.
- What is Lewis Tanenbaum's phone number?
- The practice phone number listed in the NPPES registry for Lewis Tanenbaum is (415) 383-5486.
- Does Lewis Tanenbaum accept Medicare?
- Lewis Tanenbaum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lewis Tanenbaum's NPI active?
- Yes — Lewis Tanenbaum's NPI (1083607808) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.