Robert Greenberg, MD
NPI 1639195316 · Dermatology Physician · San Ramon, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Greenberg, MD is a Dermatology Physician provider in San Ramon, CA (NPI 1639195316).
Provider details
- NPI number
- 1639195316
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G57979 (CA)
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
6,821 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 | 3,158 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 971 | $116 |
| Therapy Procedure Using Ultraviolet Radiation With Tar Or Petroleum Jelly Application96910 | 806 | $174 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 751 | $73 |
| Biopsy of Related Skin Growth, First Growth11102 | 347 | $129 |
| Destruction of Skin Growth, 1-14 Growths17110 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Mometasone Furoate | 68 | 49 |
| Betamethasone/Propylene Glycbrand: Betamethasone Diprop Augmented | 50 | 28 |
| Ketoconazole | 41 | 23 |
| Apremilastbrand: Otezla | 32 | — |
| Triamcinolone Acetonide | 32 | 23 |
| Hydrocortisone | 29 | 21 |
| Dupilumabbrand: Dupixent Pen | 25 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$470,845 across 603 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
- 2006-07-14
- Last updated
- 2007-07-08
Frequently asked questions
- What is Robert Greenberg's NPI number?
- Robert Greenberg's National Provider Identifier (NPI) is 1639195316, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Greenberg's specialty?
- Robert Greenberg is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Greenberg located?
- Robert Greenberg's practice location on file with NPPES is 5201 Norris Canyon Rd Ste 130, San Ramon, CA 94583-5410.
- What is Robert Greenberg's phone number?
- The practice phone number listed in the NPPES registry for Robert Greenberg is (925) 277-1300.
- Does Robert Greenberg accept Medicare?
- Robert Greenberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Greenberg's NPI active?
- Yes — Robert Greenberg's NPI (1639195316) 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.