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Internal Medicine

Maziar Nabavi, MD

Works at hospitals in Long Beach, CA · California

Summary

Dr. Maziar Nabavi, MD is an internal medicine doctor at 1066 Atlantic Ave, Suite B, Long Beach, CA 90813. Phone: (562) 528-8447. Accepts Medicare assignment. In 2024, Maziar Nabavi had 149 Original Medicare patients and 371 services. NPI 1770718967. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1066 Atlantic Ave, Suite B, Long Beach, CA 90813 · Directions (1 more location)
  • Phone: (562) 528‑8447
  • Medicare: Accepts Medicare assignment
  • Hospital: St Mary Medical Center
  • Group practice: Ajay G Meka MD Inc
  • Medical school: graduated 2007 (19 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Maziar Nabavi, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Maziar Nabavi accept Medicare assignment?
Yes. Medicare's clinician data says Maziar Nabavi accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Maziar Nabavi see?
In 2024, CMS data shows 149 Original Medicare patients and 371 services for Maziar Nabavi. This counts Original Medicare only and measures volume, not quality.
What is Maziar Nabavi's NPI number?
1770718967. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Maziar Nabavi, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients149
Services billed to Medicare371
Different services or procedures23
Participating Medicare providerYes
Average age of these patients68

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)206 services
  2. Advance care planning, first 30 minutes (99497)31 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)20 services
  4. Injection of drug or substance under skin or into muscle (96372)17 services
  5. Telephone medical discussion with physician, 5-10 minutes (99441)16 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol71%
  • Diabetes46%
  • Arthritis36%
  • Depression32%
  • Chronic kidney disease25%

Hospitals where Maziar Nabavi works

Medicare's Facility Affiliation Data lists Maziar Nabavi at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Maziar Nabavi is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Maziar Nabavi as a member of this group (CMS data updated October 2, 2026).

  • Ajay G Meka MD Inc14 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Long Beach

Clinicians with the same Medicare primary specialty in Long Beach, CA — not a recommendation.

All internal medicine doctors in Long Beach →

Other clinicians in Ajay G Meka MD Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2007 (19 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1770718967
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians