Dr. John Paul Graff, DO

Dr. John Paul Graff is a Anatomic Pathology & Clinical Pathology Physician provider (Pathology) practicing in Sacramento, CA, registered in the NPPES registry with NPI 1477990125 since 2013. The credential DO stands for Doctor of Osteopathic Medicine.

✓ Active NPI ✓ Valid NPI checksum

NPI	1477990125
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	9167340299
Enumeration date	2013-06-03
Last updated in NPPES	2017-10-12

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207ZH0000X	Hematology (Pathology) Physician	Secondary	20A13264	CA
207ZP0102X	Anatomic Pathology & Clinical Pathology Physician	Primary	20A13264	CA

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

Copy-ready billing details

Provider: John Graff, DO
NPI: 1477990125
Taxonomy: 207ZP0102X (Anatomic Pathology & Clinical Pathology Physician)
Address: 4400 V ST STE 1107, DEPARTMENT OF PATHOLOGY, Sacramento, CA, 95817

Other providers at this practice address

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

Verify this record

Cross-check NPI 1477990125 against the authoritative CMS record: view Dr. John Paul Graff on the official NPPES registry .

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 or validate an NPI number.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2017-10-12.