Gregory Jay Chapman, D.C.
Chiropractor · Missoula, MT
Gregory Jay Chapman, D.C. is a chiropractor with a practice address in Missoula, Montana, and NPI 1366505737, issued on Dec 18, 2006. Check the license (Montana 0514, as entered in NPPES) with the Montana board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregory Jay Chapman
- Credential
- D.C.
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 0514 MT
Self-reported in NPPES; status is on the state search - Practice location
- 1526 S Reserve St, Missoula, MT 59801
- Phone
- (406) 721-5780
- Enumerated
- Dec 18, 2006
- Record last updated
- Nov 26, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (406) 721-6487
- Medicare enrollment
- Enrolled (PECOS I20040108000774); accepts Medicare assignment
- Medical or professional school
- National College Of Chiropractic, 1984
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 474 in Montana → Look up another NPI →
Verify Gregory Jay Chapman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 0514Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gregory Jay Chapman among 474 chiropractor records in Montana
Gregory Jay Chapman, D.C. is one of 474 chiropractor records with a practice address in Montana. 27% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 67% newer
- In a Medicare fileNo · 27% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1984 · median 2007 among the 267 with a school on file
- Record last updated2007 · 70% 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 Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
71 chiropractor records list a practice address in Missoula
They are 71 of the 3,567 NPPES records with a practice address in Missoula, and 474 chiropractor records in Montana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 474 in Montana → Every provider in Missoula → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Susan Anderson, D.C.Missoula, MT 598011427131739
- Don Butler, D.C.Missoula, MT 598011962433730
- Michael Clark, DCMissoula, MT 598011265530232
- Troy Doxey, DCMissoula, MT 598011083686562
- Jim Helmer, DCMissoula, MT 598011740261098
- Anthony Lambert, D.C.Missoula, MT 598011316956683
- Steven Mazur, DCMissoula, MT 598011407913080
- Daniel McDonell, DCMissoula, MT 598011508968470
Common questions
What is Gregory Jay Chapman, D.C.'s NPI number?
Gregory Jay Chapman, D.C.'s National Provider Identifier (NPI) is 1366505737, issued on Dec 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Jay Chapman, D.C. located?
The NPPES record lists a practice address at 1526 S Reserve St, Missoula, MT, 59801. Phone: (406) 721-5780. Providers update this record themselves, so call before visiting.
How can I verify Gregory Jay Chapman, D.C.'s license?
NPPES lists Montana license number 0514, as entered by the provider. Search the Montana 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. 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.