Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Michael E. Fischer, M.D., Inc.

Q: What is the NPI number for Michael E. Fischer, M.D., Inc.?

The NPI for Michael E. Fischer, M.D., Inc. is 1689794240, a Type 2 (organization) record in the CMS NPPES registry.

Specialist in Monterey Park, CA · enumerated 2007 · authorized official Thomas Petriella, Manager.

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

National Provider Identifier

1689794240

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Registry record

Entity type Organization (Type 2)

Legal business name Michael E. Fischer, M.D., Inc.

Practice address 900 S Atlantic Blvd, Radiology Department, Monterey Park, CA, 91754

Phone (626) 570-5785

Enumeration date Mar 29, 2007

Last updated in NPPES Aug 14, 2007

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name Thomas Petriella

Title Manager

Phone (213) 481-0592

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

What is the NPI number for Michael E. Fischer, M.D., Inc.?

The NPI for Michael E. Fischer, M.D., Inc. is 1689794240, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Michael E. Fischer, M.D., Inc.?

NPPES lists Thomas Petriella (Manager) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-14.