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Internal Medicine

Fadi S. Tahhan, DO

Works at hospitals in Victorville, CA · California

Summary

Dr. Fadi S. Tahhan, DO is an internal medicine doctor at 12370 Hesperia Rd, Victorville, CA 92395. Phone: (760) 245-4747. Accepts Medicare assignment. In 2024, Fadi S. Tahhan had 27 Original Medicare patients and 593 services. NPI 1477177798. 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: 12370 Hesperia Rd, Victorville, CA 92395 · Directions (2 more locations)
  • Phone: (760) 245‑4747
  • Medicare: Accepts Medicare assignment
  • Hospital: Desert Valley Hospital
  • Group practice: Vvipa Medical Group Inc
  • Medical school: Liberty Univ College Of Osteopathic Medicine · graduated 2020 (6 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Fadi S. Tahhan, 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 Fadi S. Tahhan accept Medicare assignment?
Yes. Medicare's clinician data says Fadi S. Tahhan 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 Fadi S. Tahhan see?
In 2024, CMS data shows 27 Original Medicare patients and 593 services for Fadi S. Tahhan. This counts Original Medicare only and measures volume, not quality.
What is Fadi S. Tahhan's NPI number?
1477177798. 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 Fadi S. Tahhan, 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 patients27
Services billed to Medicare593
Different services or procedures25
Participating Medicare providerYes
Average age of these patients73

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)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 cholesterol75%
  • High blood pressure70%
  • Diabetes44%
  • Arthritis44%

Hospitals where Fadi S. Tahhan works

Medicare's Facility Affiliation Data lists Fadi S. Tahhan 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 Fadi S. Tahhan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Fadi S. Tahhan as a member of this group (CMS data updated October 2, 2026).

  • Vvipa Medical Group Inc27 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Victorville

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

All internal medicine doctors in Victorville →

Other clinicians in Vvipa Medical Group Inc

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

Clinician information

CredentialDO
Medical schoolLiberty Univ College Of Osteopathic Medicine
Graduation year2020 (6 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1477177798
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