Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Heather E Certain, MD

Internal Medicine Physician in Madison, WI · enumerated 2007.

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

National Provider Identifier

1104961465

Verified

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Registry record

Entity type Individual (Type 1)

Name Heather E Certain

Credential MD

Sex Female

Practice address 202 So Park St, Meriter Hospital, Madison, WI, 53715

Phone (608) 417-6103

Fax (608) 417-5934

Enumeration date Feb 21, 2007

Last updated in NPPES Jul 2, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 49386 (WI) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 49386-20 (WI) Primary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 49386-20 (WI) Secondary

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

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

Where does Heather Certain practice?

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

What is the NPI number for Heather Certain?

The National Provider Identifier (NPI) for Heather Certain is 1104961465, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-02.