Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Gerald Altschuler MD PC

Hematology & Oncology Physician in Tuscon, AZ · enumerated 2006 · authorized official Gerald Altschuler, Pres.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1639140965

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Registry record

Entity type Organization (Type 2)

Legal business name Gerald Altschuler MD PC

Practice address 4733 N 1st Ave, Tuscon, AZ, 85718

Phone (520) 888-3032

Fax (520) 888-9479

Enumeration date Jan 26, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 4799 (AZ) Primary

Authorized official

Name Gerald Altschuler

Title Pres

Phone (520) 888-3032

Other identifiers

Identifier	Type	State	Issuer
219982	Medicaid	AZ	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is Gerald Altschuler MD PC located?

The practice location on file with NPPES is in Tuscon, AZ.

Providers at this address

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Steven Young Physician Assistant · Tucson, AZ NPI 1740265719 Southern Arizona Medical Specialists Ltd Nephrology Physician · Tucson, AZ NPI 1346423167

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.