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Internal Medicine

Jonathan Pham, DO

Works at hospitals in Orange, CA · California

Summary

Jonathan Pham, DO (Internal Medicine) is listed by Medicare at 1 hospital in Orange, CA. NPI 1285021139. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Jonathan Pham, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
9Years since medical school (graduated 2017)
MaleGender (as listed)
The Regents of the University of California-IrvineGroup practice

Quick answers

Which hospitals does Jonathan Pham work at?
Medicare's official clinician data lists Jonathan Pham at 1 hospital: UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Jonathan Pham see patients?
Medicare's clinician data lists 1 practice location in Orange, CA. Call before your visit to confirm the address.
What is Jonathan Pham's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
Does Jonathan Pham accept Medicare assignment?
Yes. Medicare's clinician data says Jonathan Pham accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Jonathan Pham?
(714) 456-7890, as listed in official Medicare / NPI Registry data.
What is Jonathan Pham's NPI number?
1285021139. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Jonathan Pham works

Medicare's Facility Affiliation Data lists Jonathan Pham at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Jonathan Pham is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Jonathan Pham as a member of this group (CMS data updated 2026-10-02).

  • The Regents of the University of California-Irvine125 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Orange

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

All internal medicine doctors in Orange →

Clinician information

CredentialDO
Graduation year2017
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1285021139
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians