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

Mr. Jason Maas, PHYSICIAN ASSISTANT

Q: What is the NPI number for Jason Maas?

The National Provider Identifier (NPI) for Jason Maas is 1114252780, a Type 1 (individual) record in the CMS NPPES registry.

Medical Physician Assistant in New York, NY · enumerated 2009.

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

National Provider Identifier

1114252780

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Registry record

Entity type Individual (Type 1)

Name Mr. Jason Maas

Credential PHYSICIAN ASSISTANT

Sex Male

Practice address New York, NY, 10016

Phone (212) 239-2112

Fax (212) 239-4224

Enumeration date Oct 14, 2009

Last updated in NPPES Oct 14, 2009

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

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 011704-1 (NY) Primary

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

What is the NPI number for Jason Maas?

The National Provider Identifier (NPI) for Jason Maas is 1114252780, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jason Maas practice?

The practice location on file with NPPES is in New York, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-14.