Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Timothy F. Isaacs M.D. Apc

Q: What type of organization is Timothy F. Isaacs M.D. Apc?

Timothy F. Isaacs M.D. Apc is registered in NPPES as a Psychiatry Physician (its primary provider taxonomy).

Psychiatry Physician in Daly City, CA · enumerated 2010 · authorized official Timothy Isaacs, President.

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

National Provider Identifier

1609199751

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Registry record

Entity type Organization (Type 2)

Legal business name Timothy F. Isaacs M.D. Apc

Practice address 901 Campus Dr Ste 301, Daly City, CA, 94015

Phone (650) 992-2223

Fax (650) 992-2220

Enumeration date Mar 3, 2010

Last updated in NPPES Mar 3, 2010

Taxonomy & classification

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License G191950 (CA) Primary

Authorized official

Name Timothy Isaacs

Title President

Phone (650) 992-2223

Other identifiers

Identifier	Type	State	Issuer
8402917	Medicaid	CA	-

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 type of organization is Timothy F. Isaacs M.D. Apc?

Timothy F. Isaacs M.D. Apc is registered in NPPES as a Psychiatry Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-03.