NPPES file of Aug 9, 2026

Robert J. Armbruster, MD

Internal Medicine Physician · Tucson, AZ

Robert J. Armbruster, MD is an internal medicine physician with a practice address in Tucson, Arizona, and NPI 1083672315, issued on May 3, 2006. Check the license (Arizona 11820, as entered in NPPES) on the Arizona Medical Board; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083672315
Name
Robert J. Armbruster
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
11820 AZ
Self-reported in NPPES; status is on the state search
Practice location
1500 N Wilmot RD, Tucson, AZ 85712
Phone
(520) 327-0460
Enumerated
May 3, 2006
Record last updated
Apr 16, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(520) 795-0225
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →

Also registered at 1500 N Wilmot RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. David Day, MDOphthalmology Physician1093722878
  2. Barry Gershweir, MDObstetrics & Gynecology Physician1427151091
  3. Ike Gorman, DPM.,PCPodiatrist1528028115
  4. Thomas Headlee, M.D.Internal Medicine Physician1194711630
  5. Kathryn Henry, MDOphthalmology Physician1972680759
  6. Robert Henry, MDOphthalmology Physician1942387725

Verify Robert J. Armbruster in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 11820    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Arizona license search

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Robert J. Armbruster among 2,853 internal medicine physician records in Arizona

Robert J. Armbruster, MD is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 55% newer
  • In a Medicare fileNo · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 58% of these records are
  • Record last updated2008 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

651 internal medicine physician records list a practice address in Tucson

They are 651 of the 18,788 NPPES records with a practice address in Tucson, and 2,853 internal medicine physician records in Arizona. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,853 in Arizona → Every provider in Tucson → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. William Abraham, MDTucson, AZ 857121669468195
  2. Sheela Bhat, M.D.Tucson, AZ 857121598752008
  3. Muralikrishna Bhat, M.D.Tucson, AZ 857121114914637
  4. Douglas Bischoff, M.D.Tucson, AZ 857121821085333
  5. George Haloftis, D.O.Tucson, AZ 857121740277268
  6. Thomas Headlee, M.D.Tucson, AZ 857121194711630
  7. Kathleen Iveson, M.D.Tucson, AZ 857121720074263
  8. Gerome Kantor, MDTucson, AZ 857121407850290

Common questions

What is Robert J. Armbruster, MD's NPI number?

Robert J. Armbruster, MD's National Provider Identifier (NPI) is 1083672315, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert J. Armbruster, MD located?

The NPPES record lists a practice address at 1500 N Wilmot RD, Tucson, AZ, 85712. Phone: (520) 327-0460. Providers update this record themselves, so call before visiting.

How can I verify Robert J. Armbruster, MD's license?

NPPES lists Arizona license number 11820, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.