NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Jonathan Singer, D.O.

Preventive Medicine/Occupational Environmental Medicine Physician in Cheyenne, WY · enumerated 2006.

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

National Provider Identifier

1265441430

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Registry record

Entity type Individual (Type 1)
Name Dr. Jonathan Singer
Credential D.O.
Sex Male
Practice address Cheyenne, WY, 82001
Phone (307) 635-4362
Fax (307) 632-4429
Enumeration date Aug 6, 2006
Last updated in NPPES Sep 11, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

204D00000X Neuromusculoskeletal Medicine & OMM Physician Allopathic & Osteopathic Physicians · License 3675A (WY) Secondary
207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License 3675A (WY) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 3675A (WY) Secondary
2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License 3575A (WY) Secondary
2083P0500X Preventive Medicine/Occupational Environmental Medicine Physician Allopathic & Osteopathic Physicians · License 3675A (WY) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Jonathan Singer's NPI record?
Cross-check NPI 1265441430 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1265441430 active?
Yes, as of the latest NPPES snapshot, NPI 1265441430 is active (record last updated 2025-09-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.