Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Philipp Andreas Sack, M.D.

Psychiatry Physician in Modesto, CA · enumerated 2007.

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

National Provider Identifier

1790974863

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Registry record

Entity type Individual (Type 1)

Name Philipp Andreas Sack

Credential M.D.

Sex Male

Practice address 1601 Cummins Dr Ste D, Modesto, CA, 95358

Phone (510) 900-3125

Fax (504) 988-4270

Enumeration date Oct 15, 2007

Last updated in NPPES Aug 27, 2021

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License C133712 (CA) Primary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 15976R (LA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Philipp Sack?

Philipp Sack is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-27.