Gregory John Donnelly, D.C.
Chiropractor · Casa Grande, AZ
Gregory John Donnelly, D.C. is a chiropractor with a practice address in Casa Grande, Arizona, and NPI 1295914372, issued on Oct 25, 2007. Check the license (Arizona 7865, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory John Donnelly
- Credential
- D.C.
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 7865 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 177 W Cottonwood LN Ste 11, Casa Grande, AZ 85122
- Phone
- (520) 836-0666
- Enumerated
- Oct 25, 2007
- Record last updated
- Mar 20, 2026
- Fax
- (520) 836-9273
- Medicare enrollment
- Enrolled (PECOS I20081217000500); accepts Medicare assignment
- Medical or professional school
- Palmer College Chiropractic - Davenport, 1992
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 1,971 in Arizona → Look up another NPI →
Verify Gregory John Donnelly in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 7865Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Donnelly Chiropractic And Associates PLLCCasa Grande, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory John Donnelly among 1,971 chiropractor records in Arizona
Gregory John Donnelly, D.C. is one of 1,971 chiropractor records with a practice address in Arizona. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 36% newer
- In a Medicare fileYes · 14% of these records are
- In the CMS Doctors and Clinicians fileYes · 35% of these records are
- Graduated1992 · median 2000 among the 686 with a school on file
- Record last updated2026 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Chiropractor providers in Arizona
There are 1,971 chiropractor records in Arizona.
All 1,971 in Arizona → Every provider in Casa Grande → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Aubrey Backaric, DCCasa Grande, AZ 851221760647416
- Nephi Riordan, D.C.Casa Grande, AZ 851221669436614
- Brett Stewart, D.C.Casa Grande, AZ 851221093014946
- William Clement, DCApache Junction, AZ 851201053335547
- Alexander Foote, D.C.Apache Junction, AZ 851201760437701
- Tony Hildebrand, D.C.Apache Junction, AZ 851201427129055
- Michael Morris, D.C.Apache Junction, AZ 851201639262165
- Herbert Rosenberg, DCApache Junction, AZ 851201821279654
Common questions
What is Gregory John Donnelly, D.C.'s NPI number?
Gregory John Donnelly, D.C.'s National Provider Identifier (NPI) is 1295914372, issued on Oct 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory John Donnelly, D.C. located?
The NPPES record lists a practice address at 177 W Cottonwood LN Ste 11, Casa Grande, AZ, 85122. Phone: (520) 836-0666. Providers update this record themselves, so call before visiting.
How can I verify Gregory John Donnelly, D.C.'s license?
NPPES lists Arizona license number 7865, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.