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Family Practice

Ali R. Tajik, MD

Works at hospitals in Anaheim, CA · Newport Beach, CA · Fullerton, CA … · California

Summary

Dr. Ali R. Tajik, MD is a family doctor at 3400 W Ball Rd, Suite 207, Anaheim, CA 92804. Phone: (714) 826-7440. Accepts Medicare assignment. In 2024, Ali R. Tajik had 281 Original Medicare patients and 1,790 services. NPI 1629020268. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Ali R. Tajik, 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 Ali R. Tajik accept Medicare assignment?
Yes. Medicare's clinician data says Ali R. Tajik 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 Ali R. Tajik see?
In 2024, CMS data shows 281 Original Medicare patients and 1,790 services for Ali R. Tajik. This counts Original Medicare only and measures volume, not quality.
What is Ali R. Tajik's NPI number?
1629020268. 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 Ali R. Tajik, 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 patients281
Services billed to Medicare1,790
Different services or procedures40
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)586 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)390 services
  3. Hospital discharge day management, more than 30 minutes (99239)113 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)87 services
  5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)81 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 cholesterol75%
  • Arthritis60%
  • Diabetes52%
  • Ischemic heart disease38%
  • Depression38%

Hospitals where Ali R. Tajik works

Medicare's Facility Affiliation Data lists Ali R. Tajik 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 Ali R. Tajik is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Family Practice doctors in California →

Other family doctors in Anaheim

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

All family doctors in Anaheim →

Clinician information

CredentialMD
Graduation year1991 (35 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1629020268
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