Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Jeffrey S Rassman, RPA-C

Physician Assistant in Amherst, NY · enumerated 2006.

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

National Provider Identifier

1619903200

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Jeffrey S Rassman

Credential RPA-C

Sex Male

Practice address 100 Corporate Pkwy, Suite 112, Amherst, NY, 14226

Phone (716) 839-5858

Enumeration date Jun 24, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 009993 (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 specialty is Jeffrey Rassman?

Jeffrey Rassman is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Kathleen Conroy Mental Health Counselor · Amherst, NY NPI 1467430637 Matthew Mazurczak Physician Assistant · Amherst, NY NPI 1164539391 Monica Romeo Mental Health Counselor · Buffalo, NY NPI 1063874923 Mark Steinberg Mental Health Counselor · Amherst, NY NPI 1700317179 Makayla Brzezinski Behavior Analyst · Buffalo, NY NPI 1811701485 Janelle Sekyere Behavior Analyst · Buffalo, NY NPI 1093679060 Keely Ballard Behavior Analyst · Buffalo, NY NPI 1467372821

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