William Robert McGregor, M.D.
Surgery Physician · Great Falls, MT
William Robert McGregor, M.D. is a surgery physician with a practice address in Great Falls, Montana, and NPI 1326370123, issued on Feb 3, 2010. Check the license (Montana 3405, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Robert McGregor
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- 3405 MT
16334-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 520 34TH St S, Great Falls, MT 59405
- Phone
- (406) 727-4070
- Enumerated
- Feb 3, 2010
- Record last updated
- Feb 3, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicaid ID
- 02-6559 MT
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 136 in Montana → Look up another NPI →
Verify William Robert McGregor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 3405Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average surgery physician in 2024
20 Medicare Part D claims, against an average of 147 among the 20,115 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.
William Robert McGregor among 136 surgery physician records in Montana
William Robert McGregor, M.D. is one of 136 surgery physician records with a practice address in Montana. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 77% of them.
- NPI issued2010 · 77% of these records are older, 20% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2010 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Montana
There are 136 surgery physician records in Montana.
All 136 in Montana → Every provider in Great Falls → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Chad Engan, MD FACSGreat Falls, MT 594051750434676
- Aaron Hasenkrug, M.D.Great Falls, MT 594051720510050
- William Huval, MDGreat Falls, MT 594051124061411
- Jeremy Jensen, MDGreat Falls, MT 594051881822583
- Dale Mortenson, MD, FACSGreat Falls, MT 594051801949722
- Rebecca Phuoc, M.D.Great Falls, MT 594051619395480
- Glenn Winslow, MDGreat Falls, MT 594051255332102
- Mark Newbrough, MD FACSGreat Falls, MT 594041225335599
Common questions
What is William Robert McGregor, M.D.'s NPI number?
William Robert McGregor, M.D.'s National Provider Identifier (NPI) is 1326370123, issued on Feb 3, 2010. An NPI identifies a provider in billing; it is not a license.
Where is William Robert McGregor, M.D. located?
The NPPES record lists a practice address at 520 34TH St S, Great Falls, MT, 59405. Phone: (406) 727-4070. Providers update this record themselves, so call before visiting.
How can I verify William Robert McGregor, M.D.'s license?
NPPES lists Montana license number 3405, 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 William Robert McGregor, M.D. prescribe under Medicare Part D?
In 2024, William Robert McGregor, M.D. had 20 Medicare Part D claims; the average among surgery physician prescribers was 147. 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.