Robert Zimbroff, MD
NPI 1659832087 · Geriatric Medicine (Internal Medicine) Physician · Brisbane, CA
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Zimbroff, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Brisbane, CA (NPI 1659832087).
Provider details
- NPI number
- 1659832087
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A178787 (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
7 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
419 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) |
|---|---|---|
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 184 | $209 |
| Prolonged Home Or Residence Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By the Physician Or QualifG0318 | 67 | $35 |
| Administration of Influenza Virus VaccineG0008 | 28 | $39 |
| Administration of Pneumococcal, Influenza, Hepatitis B, And/Or Covid-19 Vaccine Inside a Patient'S Home; Reported Only Once Per Individual Home Per Date of Service When Such Vaccine Administration(s) Are Performed at the Patient'S HomeM0201 | 27 | $46 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 23 | $153 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 47 | 14 |
| Rosuvastatin Calcium | 26 | — |
| Atorvastatin Calcium | 23 | — |
| Gabapentin | 21 | — |
| Levothyroxine Sodium | 18 | — |
| Oxycodone Hcl | 17 | — |
| Trazodone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-03-28
- Last updated
- 2026-05-04
- Certified
- 2026-05-04
Frequently asked questions
- What is Robert Zimbroff's NPI number?
- Robert Zimbroff's National Provider Identifier (NPI) is 1659832087, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Zimbroff's specialty?
- Robert Zimbroff is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Zimbroff located?
- Robert Zimbroff's practice location on file with NPPES is 8000 Marina Blvd Ste 800, Brisbane, CA 94005-1875.
- What is Robert Zimbroff's phone number?
- The practice phone number listed in the NPPES registry for Robert Zimbroff is (415) 514-3577.
- Does Robert Zimbroff accept Medicare?
- Robert Zimbroff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Zimbroff's NPI active?
- Yes — Robert Zimbroff's NPI (1659832087) is active in the NPPES registry as of the last update on 2026-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.