Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Clifford Lorin Zeller, M.D.

Psychiatry Physician in Denver, CO · enumerated 2006 · practices at Bio-Logix LLC.

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

National Provider Identifier

1962580001

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Registry record

Entity type Individual (Type 1)

Name Dr. Clifford Lorin Zeller

Credential M.D.

Sex Male

Practice address 5031 S Ulster St, Suite 350, Denver, CO, 80237

Phone (720) 381-0015

Fax (720) 381-0149

Enumeration date Nov 2, 2006

Last updated in NPPES Oct 11, 2013

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License DR18448 (CO) Primary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 45116 (AZ) Secondary

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
16437373	Medicaid	CO	-
647945	Medicaid	AZ	-

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 1962580001 active?

Yes, as of the latest NPPES snapshot, NPI 1962580001 is active (record last updated 2013-10-11).

How do I verify Clifford Zeller's NPI record?

Cross-check NPI 1962580001 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 2013-10-11.