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Internal Medicine

Ramakrishnan Subbureddiar, MD

Works at hospitals in Tucson, AZ · Arizona

Summary

Ramakrishnan Subbureddiar, MD (Internal Medicine) is listed by Medicare at 2 hospitals in Tucson, AZ. NPI 1326016221. 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 Ramakrishnan Subbureddiar, 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
51Years since medical school (graduated 1975)
MaleGender (as listed)

Quick answers

Which hospitals does Ramakrishnan Subbureddiar work at?
Medicare's official clinician data lists Ramakrishnan Subbureddiar at 2 hospitals: St Joseph's Hospital and Tucson Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Ramakrishnan Subbureddiar see patients?
Medicare's clinician data lists 1 practice location in Tucson, AZ. Call before your visit to confirm the address.
What is Ramakrishnan Subbureddiar's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Geriatric Medicine.
Does Ramakrishnan Subbureddiar accept Medicare assignment?
Yes. Medicare's clinician data says Ramakrishnan Subbureddiar 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 Ramakrishnan Subbureddiar?
(520) 296-8733, as listed in official Medicare / NPI Registry data.
What is Ramakrishnan Subbureddiar's NPI number?
1326016221. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Ramakrishnan Subbureddiar works

Medicare's Facility Affiliation Data lists Ramakrishnan Subbureddiar 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 Ramakrishnan Subbureddiar is enrolled with Medicare (CMS data updated 2026-10-02).

Specialties

Find other Internal Medicine doctors in Arizona →

Other internal medicine doctors in Tucson

Clinicians with the same Medicare primary specialty in Tucson, AZ — not a recommendation.

All internal medicine doctors in Tucson →

Clinician information

CredentialMD
Graduation year1975
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1326016221
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