Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sarah K May, M.D.

Hematology & Oncology Physician in Weymouth, MA · enumerated 2005.

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

National Provider Identifier

1801879002

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Registry record

Entity type Individual (Type 1)

Name Sarah K May

Credential M.D.

Sex Female

Practice address 51 Performance Dr, Suite 110, Weymouth, MA, 02189

Phone (781) 337-9091

Fax (781) 337-9619

Enumeration date Nov 22, 2005

Last updated in NPPES Mar 20, 2017

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 78169 (MA) 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
J31675	Other	MA	BLUE CROSS BLUE SHIELD
14354	Other	MA	HARVARD PILGRIM
2033280	Other	MA	AETNA US HEALTH
78169	Other	MA	TUFTS HEALTH CARE
3161056	Medicaid	MA	-
B21167801	Other	MA	CIGNA

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

What specialty is Sarah May?

Sarah May is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

Browse all →

Cynthia Maclachlan Obstetrics & Gynecology Nurse Practitioner · Weymouth, MA NPI 1265432728 Shannon Fullerton Obstetrics & Gynecology Physician · Weymouth, MA NPI 1821099110 Mark Anderson Medical Oncology Physician · Weymouth, MA NPI 1588652093 Robert Vanderlin Obstetrics & Gynecology Physician · Weymouth, MA NPI 1336120377 Ingrid Kotch Obstetrics & Gynecology Physician · Weymouth, MA NPI 1922089648 Michael Anderson Hematology & Oncology Physician · Weymouth, MA NPI 1144201534 Michelle North Obstetrics & Gynecology Physician · Weymouth, MA NPI 1669453981 Paul Musto Hematology & Oncology Physician · Weymouth, MA NPI 1699758896

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-20.