Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William A Baker, MD

Cardiovascular Disease Physician in Denver, CO · enumerated 2006.

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

National Provider Identifier

1740209337

Verified

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Registry record

Entity type Individual (Type 1)

Name Dr. William A Baker

Credential MD

Sex Male

Practice address 2045 Franklin St, Denver, CO, 80205

Phone (303) 338-4545

Enumeration date Jul 18, 2006

Last updated in NPPES Jun 21, 2021

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 35205 (CO) 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
77035046	Medicaid	CO	-
020707	Other	CO	KAISER COMMERCIAL NUMBER

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 1740209337 active?

Yes, as of the latest NPPES snapshot, NPI 1740209337 is active (record last updated 2021-06-21).

How do I verify William Baker's NPI record?

Cross-check NPI 1740209337 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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George Ho Rheumatology Physician · Denver, CO NPI 1497747190 Amit Sudan Vascular & Interventional Radiology Physician · Denver, CO NPI 1689660953 Stacey Gregory Optometrist · Denver, CO NPI 1699750927 Alison Rademacher Audiologist · Denver, CO NPI 1740266782 Heather Hue Hematology & Oncology Physician · Denver, CO NPI 1043271588 Christopher Lowery Cardiovascular Disease Physician · Denver, CO NPI 1679512743 Mark Perlman Orthopaedic Foot and Ankle Surgery Physician · Denver, CO NPI 1679509566 Bradley Schuster Ophthalmology Physician · Denver, CO NPI 1649292178

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-21.