Irvin Belzer, MD
Internal Medicine Physician · Phoenix, AZ
Irvin Belzer, MD is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1063450344, issued on Jun 2, 2006. Check the license (Arizona 6258, as entered in NPPES) on the Arizona Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Irvin Belzer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 6258 AZ
A21994 CA
11398 NE
Self-reported in NPPES; status is on the state search - Practice location
- 2510 W Dunlap Ave Ste 290, Phoenix, AZ 85021
- Phone
- (602) 789-0344
- Enumerated
- Jun 2, 2006
- Entity
- Type 1 · individual
Also registered at 2510 W Dunlap Ave Ste 290
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Randolph Clark, M.D.Internal Medicine Physician1568456036
- Suzanne Combs, DOGeriatric Medicine (Internal Medicine) Physician1790745503
Verify Irvin Belzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 6258Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
695 internal medicine physician records list a practice address in Phoenix
They are 695 of the 31,399 NPPES records with a practice address in Phoenix, 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 695 in Phoenix → All 2,853 in Arizona → Every provider in Phoenix →
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- Kristopher Abbate, MDTucson, AZ1184112401
Common questions
What is Irvin Belzer, MD's NPI number?
Irvin Belzer, MD's National Provider Identifier (NPI) is 1063450344, issued on Jun 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Irvin Belzer, MD located?
The NPPES record lists a practice address at 2510 W Dunlap Ave Ste 290, Phoenix, AZ, 85021. Phone: (602) 789-0344. Providers update this record themselves, so call before visiting.
How can I verify Irvin Belzer, MD's license?
NPPES lists Arizona license number 6258, 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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
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) 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 27, 2026.