Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

David Marcus MD, Inc.

Psychiatry Physician in Pasadena, CA · enumerated 2018 · authorized official David Marcus, Owner.

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

National Provider Identifier

1639674161

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Registry record

Entity type Organization (Type 2)

Legal business name David Marcus MD, Inc.

Parent organization David Marcus MD, Inc.

Practice address 107 S. Fair Oaks Avenue, Suite #315, Pasadena, CA, 91105

Phone (626) 219-6657

Fax (626) 219-6658

Enumeration date Mar 27, 2018

Last updated in NPPES Mar 27, 2018

Taxonomy & classification

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name David Marcus

Title Owner

Phone (310) 702-7124

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2018-03-27. Verify at npiregistry.cms.hhs.gov.

Where is David Marcus MD, Inc. located?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-27.