Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark J Biagtan

Allergy Physician in Madison, WI · enumerated 2008.

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

National Provider Identifier

1376707307

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Registry record

Entity type Individual (Type 1)

Name Mark J Biagtan

Sex Male

Practice address 20 S Park St, Madison, WI, 53715

Phone (608) 287-2600

Fax (608) 287-2610

Enumeration date Jul 18, 2008

Last updated in NPPES Jan 14, 2021

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 54168 (WI) Secondary

2080P0201X Pediatric Allergy/Immunology Physician Allopathic & Osteopathic Physicians · License 54168 (WI) Secondary

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License 54168 (WI) Primary

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

Is NPI 1376707307 active?

Yes, as of the latest NPPES snapshot, NPI 1376707307 is active (record last updated 2021-01-14).

How do I verify Mark Biagtan's NPI record?

Cross-check NPI 1376707307 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-14.