Joe K. Gregory, DO
Internal Medicine Physician · Butte, MT
Joe K. Gregory, DO is an internal medicine physician with a practice address in Butte, Montana, and NPI 1336127463, issued on Jan 9, 2006. Check the license (Montana 12797, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Joe K. Gregory
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 12797 MT
2702 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 435 S. Crystal, Butte, MT 59701
- Phone
- (406) 496-3600
- Enumerated
- Jan 9, 2006
- Record last updated
- Oct 22, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (406) 496-3653
- Medicaid ID
- 111097 AZ
- Medicare enrollment
- Enrolled (PECOS I20120130000132); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1987
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 324 in Montana → Look up another NPI →
Verify Joe K. Gregory in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 12797Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
27 Medicare Part D claims for 15 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $93.19
1 payment: food and beverage; the largest payer was Solventum Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Scl Health Medical Group-Butte LLCButte, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joe K. Gregory among 324 internal medicine physician records in Montana
Joe K. Gregory, DO is one of 324 internal medicine physician records with a practice address in Montana. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 44% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1987 · median 2006 among the 191 with a school on file
- Record last updated2011 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 internal medicine physician records list a practice address in Butte
They are 14 of the 744 NPPES records with a practice address in Butte, and 324 internal medicine physician records in Montana.
All 324 in Montana → Every provider in Butte → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jonathan Bodine, D.O.Butte, MT 597011760434740
- David Chamberlain, M.D.Butte, MT 597011861423071
- Florian Cortese, M.D.Butte, MT 597011609804228
- James Drynan, MDButte, MT 597011053480772
- Kyler KingstonButte, MT 597011447713250
- Ian Macdonald, DOButte, MT 597011093207318
- John Pullman, MDButte, MT 597011518998426
- Michael Rhodes, M.D.Butte, MT 597011427212729
Common questions
What is Joe K. Gregory, DO's NPI number?
Joe K. Gregory, DO's National Provider Identifier (NPI) is 1336127463, issued on Jan 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joe K. Gregory, DO located?
The NPPES record lists a practice address at 435 S. Crystal, Butte, MT, 59701. Phone: (406) 496-3600. Providers update this record themselves, so call before visiting.
How can I verify Joe K. Gregory, DO's license?
NPPES lists Montana license number 12797, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joe K. Gregory, DO prescribe under Medicare Part D?
In 2024, Joe K. Gregory, DO had 27 Medicare Part D claims for 15 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions 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.