Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Tammy W Chan, M.D.

Q: What is the NPI number for Tammy Chan?

The National Provider Identifier (NPI) for Tammy Chan is 1902077324, a Type 1 (individual) record in the CMS NPPES registry.

Obstetrics & Gynecology Physician in Westerville, OH · enumerated 2008.

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

National Provider Identifier

1902077324

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Registry record

Entity type Individual (Type 1)

Name Dr. Tammy W Chan

Credential M.D.

Sex Female

Practice address 550 S Cleveland Ave, Ste D, Westerville, OH, 43081

Phone (614) 865-7600

Fax (614) 392-2546

Enumeration date Mar 13, 2008

Last updated in NPPES Feb 14, 2022

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 11011777A (IN) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 35092332 (OH) Primary

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

Other identifiers

Identifier	Type	State	Issuer
2885794	Medicaid	OH	-

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 is the NPI number for Tammy Chan?

The National Provider Identifier (NPI) for Tammy Chan is 1902077324, a Type 1 (individual) record in the CMS NPPES registry.

Where does Tammy Chan practice?

The practice location on file with NPPES is in Westerville, OH. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

John Buchan Podiatrist · Westerville, OH NPI 1437137718 Stephanie Beier-Phillips Women's Health Nurse Practitioner · Westerville, OH NPI 1760457170 Heidi Arbona Obstetrics & Gynecology Physician · Westerville, OH NPI 1548215551 Wesley J Harnish MD Ophthalmology Physician · Westerville, OH NPI 1033201553 Northside Womens Health LLC Specialist · Westerville, OH NPI 1104123421 Jodi Bender Obstetrics Physician · Westerville, OH NPI 1053707414

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-14.