Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Paul Graff, DO

Anatomic Pathology & Clinical Pathology Physician in Sacramento, CA · enumerated 2013.

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

National Provider Identifier

1477990125

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Registry record

Entity type Individual (Type 1)

Name Dr. John Paul Graff

Credential DO

Sex Male

Practice address 4400 V St Ste 1107, Department of Pathology, Sacramento, CA, 95817

Phone (916) 734-0299

Enumeration date Jun 3, 2013

Last updated in NPPES Oct 12, 2017

Taxonomy & licenses

207ZH0000X Hematology (Pathology) Physician Allopathic & Osteopathic Physicians · License 20A13264 (CA) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 20A13264 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 John Graff?

John Graff is registered in NPPES with the primary taxonomy of Anatomic Pathology & Clinical Pathology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Karleen Meiklejohn Anatomic Pathology & Clinical Pathology Physician · Sacramento, CA NPI 1942738190 Wesley Rubenstein Blood Banking & Transfusion Medicine Physician · Sacramento, CA NPI 1588153134 Alejandro Alvarez Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1285413526 Shafagh Parsazad Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1699534891 Connie Chang Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1760241848 Molly Tobin Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1477354652 Garrick Gama Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1982408944

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-10-12.