Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Carolyn Grace Chatterton, DO, MPH

Maternal & Fetal Medicine Physician in Milwaukee, WI · enumerated 2017.

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

National Provider Identifier

1245750744

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Registry record

Entity type Individual (Type 1)

Name Dr. Carolyn Grace Chatterton

Credential DO, MPH

Sex Female

Practice address Milwaukee, WI, 53233

Phone (414) 219-4100

Enumeration date Jun 26, 2017

Last updated in NPPES Nov 6, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207VM0101X Maternal & Fetal Medicine Physician Allopathic & Osteopathic Physicians · License 8151721 (WI) Primary

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

Other identifiers

Identifier	Type	State	Issuer
100287403	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 is the NPI number for Carolyn Chatterton?

The National Provider Identifier (NPI) for Carolyn Chatterton is 1245750744, a Type 1 (individual) record in the CMS NPPES registry.

Where does Carolyn Chatterton practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-06.