Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joan Marilyn Stoler, MD

Clinical Genetics (M.D.) Physician in Boston, MA · enumerated 2005.

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

National Provider Identifier

1740270107

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Registry record

Entity type Individual (Type 1)

Name Dr. Joan Marilyn Stoler

Credential MD

Sex Female

Practice address 300 Longwood Ave, Children'S Hospital, Boston, MA, 02115

Phone (617) 355-4697

Fax (617) 730-0466

Enumeration date Oct 26, 2005

Last updated in NPPES Aug 16, 2007

Taxonomy & licenses

207SG0201X Clinical Genetics (M.D.) Physician Allopathic & Osteopathic Physicians · License 52773 (MA) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 52773 (MA) Secondary

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
6198511	Medicaid	MA	-
052773	Other	MA	TUFTS HEALTH PLAN
J04982	Other	MA	BCBS MA

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 Joan Stoler?

Joan Stoler is registered in NPPES with the primary taxonomy of Clinical Genetics (M.D.) 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 2007-08-16.