Marvin Zamost, M.D.
NPI 1922041045 · Family Medicine Physician · Long Beach, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marvin Zamost, M.D. is a Family Medicine Physician provider in Long Beach, CA (NPI 1922041045).
Provider details
- NPI number
- 1922041045
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G26888 (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
892 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 333 | $98 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 226 | $140 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 91 | $139 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 79 | $62 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 61 | $62 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 144 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 621 | 180 |
| Losartan Potassium | 572 | 149 |
| Rosuvastatin Calcium | 508 | 149 |
| Levothyroxine Sodium | 491 | 129 |
| Amlodipine Besylate | 467 | 131 |
| Simvastatin | 338 | 98 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-14
- Last updated
- 2012-10-17
Frequently asked questions
- What is Marvin Zamost's NPI number?
- Marvin Zamost's National Provider Identifier (NPI) is 1922041045, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marvin Zamost's specialty?
- Marvin Zamost is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marvin Zamost located?
- Marvin Zamost's practice location on file with NPPES is 6226 E Spring St, Long Beach, CA 90815-1423.
- What is Marvin Zamost's phone number?
- The practice phone number listed in the NPPES registry for Marvin Zamost is (562) 420-1338.
- Does Marvin Zamost accept Medicare?
- Marvin Zamost is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marvin Zamost's NPI active?
- Yes — Marvin Zamost's NPI (1922041045) is active in the NPPES registry as of the last update on 2012-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.