Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Michael Mesirow, PA-C
Physician Assistant in Berwyn, IL · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1487150629
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Registry record
Entity type Individual (Type 1)
Name Michael Mesirow
Credential PA-C
Sex Male
Practice address 2550 Oak Park Ave, Berwyn, IL, 60402
Phone (708) 575-6757
Enumeration date Apr 5, 2018
Last updated in NPPES Mar 5, 2025
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085.006505 (IL) 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.
Frequently asked questions
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.
What specialty is Michael Mesirow?
Michael Mesirow 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.
Other providers at this practice address
Browse all → Diane Garrison General Practice Dentistry · Berwyn, IL NPI 1265588503 Premier Pain Specialists LLC Pain Medicine (Anesthesiology) Physician · Berwyn, IL NPI 1225387806 Chanel Mesch Family Nurse Practitioner · Berwyn, IL NPI 1487151304 Claudia Roldan Family Nurse Practitioner · Berwyn, IL NPI 1801557319 Everside Health LLC -Teamsters 727 Wellness Center Preventive Medicine/Occupational Environmental Medicine Physician · Berwyn, IL NPI 1528787215 Reshma Dhake DDS Ltd Dentist · Berwyn, IL NPI 1255205167
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-05.