Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Gregory John Donnelly, DC

Individual provider Chiropractor · NPI 1295914372

Dr. Gregory John Donnelly, DC is a Chiropractic in Casa Grande, Arizona. Graduated from Palmer College Chiropractic - Davenport in 1992, 34 years ago. Practices with Donnelly Chiropractic and Associates PLLC, a 2-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
34
Trained at
Palmer College Chiropractic - Davenport
Licensed in
AZ
In the registry since
2007
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

177 W Cottonwood Ln Ste 11
Casa Grande, AZ 85122-2552
Phone: (520) 836-0666
Fax: (520) 836-9273
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 121 W Florence Blvd, Casa Grande, AZ 85122-4089 — (520) 709-1937
  • 121 W Florence Blvd, Casa Grande, AZ 85122-4089 — (520) 709-1937

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 7865 (AZ)

Record details

NPI number1295914372
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedOctober 25, 2007
Last updated in NPPESMarch 20, 2026
Certification dateMarch 20, 2026
Mailing address177 W Cottonwood Ln Ste 11, Casa Grande, AZ 85122-2552

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCHIROPRACTIC
Medical schoolPALMER COLLEGE CHIROPRACTIC - DAVENPORT
Graduated 1992 (34 years in practice)
Group practice Donnelly Chiropractic And Associates Pllc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Casa Grande