What is John Graykoski's NPI number?

John Graykoski's National Provider Identifier (NPI) is 1740234772, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Graykoski's specialty?

John Graykoski is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is John Graykoski located?

John Graykoski's practice location on file with NPPES is 1222 E Woodland Ave, Barron, WI 54812-1765.

What is John Graykoski's phone number?

The practice phone number listed in the NPPES registry for John Graykoski is (715) 537-3166.

Is John Graykoski's NPI active?

Yes — John Graykoski's NPI (1740234772) is active in the NPPES registry as of the last update on 2019-10-11.

IndividualActive

John Graykoski, PA

NPI 1740234772 · Physician Assistant · Barron, WI

John Graykoski, PA is a Physician Assistant provider in Barron, WI (NPI 1740234772).

Provider details

NPI number: 1740234772
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA
Sex: Male
Sole proprietor: No
License: 1944023 (WI)

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense 1944 (WI)
Physician Assistants & Advanced Practice Nursing Providers
Emergency Medicine Physician207P00000XLicense 1944023 (WI)
Allopathic & Osteopathic Physicians
Emergency Medical Services (Emergency Medicine) Physician207PE0004XLicense 1944023 (WI)
Allopathic & Osteopathic Physicians
Pediatric Emergency Medicine (Emergency Medicine) Physician207PP0204XLicense 1944023 (WI)
Allopathic & Osteopathic Physicians
Medical Toxicology (Emergency Medicine) Physician207PT0002XLicense 1944023 (WI)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

1222 E Woodland Ave

Barron, WI 54812-1765

Phone: (715) 537-3166

Street-level locationGet directions

More WI providers

Mailing address

Po Box 1510

Eau Claire, WI 54702-1510

Enumerated: 2006-05-22
Last updated: 2019-10-11

Frequently asked questions

What is John Graykoski's NPI number?: John Graykoski's National Provider Identifier (NPI) is 1740234772, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is John Graykoski's specialty?: John Graykoski is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is John Graykoski located?: John Graykoski's practice location on file with NPPES is 1222 E Woodland Ave, Barron, WI 54812-1765.
What is John Graykoski's phone number?: The practice phone number listed in the NPPES registry for John Graykoski is (715) 537-3166.
Is John Graykoski's NPI active?: Yes — John Graykoski's NPI (1740234772) is active in the NPPES registry as of the last update on 2019-10-11.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.