Paul R. Siddoway, M.D.
Internal Medicine Physician · Butte, MT
Paul R. Siddoway, M.D. is an internal medicine physician with a practice address in Butte, Montana, and NPI 1275564189, issued on Jul 6, 2006. Check the license (Montana 6039, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Paul R. Siddoway
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 6039 MT
Self-reported in NPPES; status is on the state search - Practice location
- 300 W Mercury St, Butte, MT 59701
- Phone
- (406) 723-1300
- Enumerated
- Jul 6, 2006
- Record last updated
- Jan 11, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (406) 723-1310
- Medicare enrollment
- Enrolled (PECOS I20080122000177); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 324 in Montana → Look up another NPI →
Also registered at 300 W Mercury St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Chamberlain, M.D.Internal Medicine Physician1861423071
- Florian Cortese, M.D.Internal Medicine Physician1609804228
- Dannielle Hall, PA-CPhysician Assistant1194129874
- Kenneth Hunt, M.D.Legal Medicine1265463475
- Jeanne Mehrens, P A CPhysician Assistant1285854034
- John Pullman, MDInternal Medicine Physician1518998426
Verify Paul R. Siddoway in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 6039Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% more Medicare Part D claims than the average internal medicine physician in 2024
3,968 Medicare Part D claims for 289 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 50 claims were for opioids.
Most prescribed
- Atorvastatin Calcium407 claims
- Amlodipine Besylate361 claims
- Levothyroxine Sodium316 claims
- Omeprazole157 claims
- Simvastatin150 claims
- Potassium Chloride149 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: $54.95
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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.
2 hospitals and group practices
- Community Hospital OF AnacondaAnaconda, MT · Critical Access Hospitals5 of 5 stars
- Mercury Street Medical Group PLLCButte, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Paul R. Siddoway among 324 internal medicine physician records in Montana
Paul R. Siddoway, M.D. 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
- Graduated1983 · median 2006 among the 191 with a school on file
- Record last updated2017 · 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
- Joe Gregory, DOButte, MT 597011336127463
- Kyler KingstonButte, MT 597011447713250
- Ian Macdonald, DOButte, MT 597011093207318
- John Pullman, MDButte, MT 597011518998426
Common questions
What is Paul R. Siddoway, M.D.'s NPI number?
Paul R. Siddoway, M.D.'s National Provider Identifier (NPI) is 1275564189, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Paul R. Siddoway, M.D. located?
The NPPES record lists a practice address at 300 W Mercury St, Butte, MT, 59701. Phone: (406) 723-1300. Providers update this record themselves, so call before visiting.
How can I verify Paul R. Siddoway, M.D.'s license?
NPPES lists Montana license number 6039, 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 Paul R. Siddoway, M.D. prescribe under Medicare Part D?
In 2024, Paul R. Siddoway, M.D. had 3,968 Medicare Part D claims for 289 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.