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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Ulwelling, M.D.

Psychiatry Physician in Albuquerque, NM · enumerated 2005 · practices at David J. Martinez.

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

National Provider Identifier

1891778676

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Registry record

Entity type Individual (Type 1)
Name Dr. William Ulwelling
Credential M.D.
Sex Male
Practice address 4263 Montgomery Blvd Ne, Suite 240, Albuquerque, NM, 87109
Phone (505) 883-8786
Fax (505) 872-2118
Enumeration date Nov 25, 2005
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 84-124 (NM) Primary
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.

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Frequently asked questions

How do I verify William Ulwelling's NPI record?
Cross-check NPI 1891778676 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1891778676 active?
Yes, as of the latest NPPES snapshot, NPI 1891778676 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.