Michael Zimmerman, MD
NPI 1366513822 · Family Medicine Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Zimmerman, MD is a Family Medicine Physician provider in Oakland, CA (NPI 1366513822).
Provider details
- NPI number
- 1366513822
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A70706 (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
519 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 273 | $154 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 58 | $24 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 57 | $156 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 52 | $24 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 26 | $110 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 20 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 145 | 45 |
| Levothyroxine Sodium | 86 | 20 |
| Lisinopril | 73 | 22 |
| Losartan Potassium | 63 | 20 |
| Hydrochlorothiazide | 62 | 17 |
| Amlodipine Besylate | 60 | 18 |
| Gabapentin | 42 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-13
- Last updated
- 2011-03-25
Frequently asked questions
- What is Michael Zimmerman's NPI number?
- Michael Zimmerman's National Provider Identifier (NPI) is 1366513822, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Zimmerman's specialty?
- Michael Zimmerman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Zimmerman located?
- Michael Zimmerman's practice location on file with NPPES is 405 49th St, Oakland, CA 94609-2101.
- What is Michael Zimmerman's phone number?
- The practice phone number listed in the NPPES registry for Michael Zimmerman is (510) 230-2372.
- Does Michael Zimmerman accept Medicare?
- Michael Zimmerman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Zimmerman's NPI active?
- Yes — Michael Zimmerman's NPI (1366513822) is active in the NPPES registry as of the last update on 2011-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.