Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Shane Eugene Mass, DMSc, PA-C

Physician Assistant in Commerce City, CO · enumerated 2020 · practices at Smpa Medical One, Pllc.

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

National Provider Identifier

1356959241

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Registry record

Entity type Individual (Type 1)

Name Dr. Shane Eugene Mass

Credential DMSc, PA-C

Sex Male

Practice address 10622 Racine St, Commerce City, CO, 80022

Phone (303) 503-3980

Fax (303) 503-3980

Enumeration date Jul 16, 2020

Last updated in NPPES Nov 5, 2026

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 11273 (AZ) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MED-PAC-LIC-118214 (MT) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 1754 (SD) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 1754 (SD) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 118214 (MT) Secondary

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 1356959241 active?

Yes, as of the latest NPPES snapshot, NPI 1356959241 is active (record last updated 2026-11-05).

How do I verify Shane Mass's NPI record?

Cross-check NPI 1356959241 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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Smpa Medical One, Pllc Primary Care Clinic/Center · Commerce City, CO NPI 1659290062

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-11-05.