Roger Diegel, MD
Rheumatology Physician · Kalispell, MT
Roger Diegel, MD is a rheumatology physician with a practice address in Kalispell, Montana, and NPI 1770660896, issued on Nov 1, 2006. Check the license (Montana 10616, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Roger Diegel
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 10616 MT
Self-reported in NPPES; status is on the state search - Practice location
- 150 Commons Way, Kalispell, MT 59901
- Phone
- (406) 752-2010
- Enumerated
- Nov 1, 2006
- Entity
- Type 1 · individual
Also registered at 150 Commons Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cheryl Burnett, FNPInfusion Therapy Registered Nurse1467019141
- Meghan Duvall, FNPStudent in an Organized Health Care Education/Training Program1336765379
- Bernadette Vanbelois, M.D.Rheumatology Physician1740360676
Verify Roger Diegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 10616Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
45% more Medicare Part D claims than the average rheumatology physician in 2024
2,988 Medicare Part D claims for 442 beneficiaries, against an average of 2,058 among the 4,833 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 144 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate636 claims
- Methotrexate494 claims
- Prednisone399 claims
- Alendronate Sodium121 claims
- Allopurinol97 claims
- Meloxicam77 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: $282.39
14 payments, mostly food and beverage; the largest payer was Lilly USA, LLC. The 3,502 providers of this specialty with any payment received $8,487.29 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.
One hospital or facility affiliation
- Kalispell Regional Medical Center IncKalispell, MT
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Rheumatology Physician providers in Montana
There are 17 rheumatology physician records in Montana.
Other rheumatology physician records in Montana
- Steven Akre, MDGreat Falls, MT1114928090
- Enrico Arguelles, MDBillings, MT1932206505
- Rebecca Belsom, M.D.Missoula, MT1063604338
- Ann Corsi, MDMissoula, MT1568418630
- Rebecca Danforth, M.D.Missoula, MT1164570172
- Wendy Donaugh, FNPBillings, MT1336523836
- Steven Ecklund, M.D.Anaconda, MT1942260773
- Susan English, M.D.Missoula, MT1144243155
- Phillip Griffin, M.D.Billings, MT1013166164
- Vaani Jegapragasan, MDBozeman, MT1295950756
Common questions
What is Roger Diegel, MD's NPI number?
Roger Diegel, MD's National Provider Identifier (NPI) is 1770660896, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Roger Diegel, MD located?
The NPPES record lists a practice address at 150 Commons Way, Kalispell, MT, 59901. Phone: (406) 752-2010. Providers update this record themselves, so call before visiting.
How can I verify Roger Diegel, MD's license?
NPPES lists Montana license number 10616, 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 Roger Diegel, MD prescribe under Medicare Part D?
In 2024, Roger Diegel, MD had 2,988 Medicare Part D claims for 442 beneficiaries; the average among rheumatology physician prescribers was 2,058. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.