Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary Susan Jay, MD

Pediatric Adolescent Medicine Physician in Milwaukee, WI · enumerated 2006 · practices at Childrens Hospital of Wisconsin Inc.

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

National Provider Identifier

1649221482

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary Susan Jay

Credential MD

Sex Female

Practice address 8915 W Connell Ave, Milwaukee, WI, 53226

Phone (414) 266-2873

Fax (414) 337-7860

Enumeration date May 15, 2006

Last updated in NPPES Jun 3, 2019

Taxonomy & licenses

2080A0000X Pediatric Adolescent Medicine Physician Allopathic & Osteopathic Physicians · License 47315 (WI) 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
000030377M	Other	-	HUMANA
1649221482	Medicaid	WI	-
34582200	Medicaid	WI	-

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 specialty is Mary Susan Jay?

Mary Susan Jay is registered in NPPES with the primary taxonomy of Pediatric Adolescent Medicine 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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-03.