Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Harry Marshak MD A Professional Corporation

Clinic/Center in Palm Desert, CA · enumerated 2010 · authorized official Harry Marshak, President.

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

National Provider Identifier

1639489818

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Harry Marshak MD A Professional Corporation

Practice address 74075 El Paseo Ste D2, Palm Desert, CA, 92260

Phone (760) 341-2551

Fax (760) 341-2522

Enumeration date Oct 20, 2010

Last updated in NPPES Feb 17, 2011

Taxonomy & classification

261Q00000X Clinic/Center Ambulatory Health Care Facilities · License A70631 (CA) Primary

Authorized official

Name Harry Marshak

Title President

Phone (760) 341-2551

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is Harry Marshak MD A Professional Corporation located?

The practice location on file with NPPES is in Palm Desert, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-02-17. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-17.