Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WILLIAM A GRYNIEWICZ PA-C
NPI 1962488866
Physician Assistant in Cleveland, OH

Active since December 22, 2005
18697 BAGLEY RD, CLEVELAND, OH 44130(440) 816-8000 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About William A Gryniewicz Pa-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM A GRYNIEWICZ PA-C (NPI 1962488866) is an individual physician assistant in Cleveland, Ohio, licensed in Ohio (50-000984) and active in the NPI registry since December 2005.

NPPES Registry Identity

NPI1962488866
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameWILLIAM A GRYNIEWICZCredential: PA-C
Location Address18697 BAGLEY RDCleveland, OH 44130-3417
Mailing AddressPo Box 634434Cincinnati, OH 45263-0001 · (440) 879-0081 · Fax (440) 879-0084
Sole ProprietorNo
Enumeration DateDecember 22, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1962488866 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License Licensed in OH · 50-000984
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
18697 BAGLEY RD, Cleveland, OH 44130

Other Identifiers 2

Other000000346914OH · Anthem
OtherP00215205OH · Railroad Medicare

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Psychiatry & Neurology (Psychiatry)
18697 BAGLEY RD
MIDDLEBURG HEIGHTS, OH 44130
Nurse Practitioner
18697 BAGLEY RD
MIDDLEBURG HEIGHTS, OH 44130
Physician Assistant
18697 BAGLEY RD
CLEVELAND, OH 44130
Anesthesiology
18697 BAGLEY RD
CLEVELAND, OH 44130
Physician Assistant (Medical)
18697 BAGLEY RD
MIDDLEBURG HEIGHTS, OH 44130
Pharmacist
18697 BAGLEY RD
CLEVELAND, OH 44130
Emergency Medicine
18697 BAGLEY RD
MIDDLEBURG HEIGHTS, OH 44130
Emergency Medicine
18697 BAGLEY RD
MIDDLEBURG HEIGHTS, OH 44130

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Gryniewicz's NPI number?

The NPI number for William Gryniewicz is 1962488866. It was assigned to this individual provider in the NPPES registry on December 22, 2005.

Where is William Gryniewicz located?

William Gryniewicz practices at 18697 Bagley Rd, Cleveland, OH 44130. The listed phone number is (440) 816-8000.

What is William Gryniewicz's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

When was this NPI record last updated?

The NPPES record for William Gryniewicz was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.