Dennis Lee Peterson, M.D.
Internal Medicine Physician · Kalispell, MT
Dennis Lee Peterson, M.D. is an internal medicine physician with a practice address in Kalispell, Montana, and NPI 1205986460, issued on Jan 11, 2007. Check the license (Montana MED-PHYS-LIC-4557, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Dennis Lee Peterson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MED-PHYS-LIC-4557 MT
Self-reported in NPPES; status is on the state search - Practice location
- 705 6TH Avenue East, Kalispell, MT 59901
- Phone
- (406) 755-7366
- Enumerated
- Jan 11, 2007
- Record last updated
- Apr 8, 2025
- Fax
- (406) 755-7277
- Medicaid ID
- 0143754 MT
- Medicare enrollment
- Enrolled (PECOS I20040324001493); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 1978
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 324 in Montana → Look up another NPI →
Also registered at 705 6TH Avenue East
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melanie Zander, N.P.Adult Health Nurse Practitioner1598815425
Verify Dennis Lee Peterson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license MED-PHYS-LIC-4557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
333 Medicare Part D claims for 50 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 12 claims were for opioids.
Most prescribed
- Omeprazole25 claims
- Atorvastatin Calcium20 claims
- Metformin Hcl16 claims
- Lisinopril15 claims
- Torsemide12 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.
Bills Medicare through 2 group practices
- Confederated Salish And Kootenai Tribes OF The Flathead ReservationSaint Ignatius, MT
- Kalispell Regional Medical Center IncKalispell, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis Lee Peterson among 324 internal medicine physician records in Montana
Dennis Lee Peterson, 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 2007, is newer than 56% of them.
- NPI issued2007 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1978 · median 2006 among the 191 with a school on file
- Record last updated2025 · 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).
30 internal medicine physician records list a practice address in Kalispell
They are 30 of the 1,650 NPPES records with a practice address in Kalispell, and 324 internal medicine physician records in Montana.
All 324 in Montana → Every provider in Kalispell → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ann Bukacek, M.D.Kalispell, MT 599011295707776
- Laura Csaplar, MDKalispell, MT 599011497760185
- Kimberly DamrowKalispell, MT 599011548267347
- Stephen Evans, M.D.Kalispell, MT 599011215970793
- Christopher Gill, MDKalispell, MT 599011417998568
- David Habel, M.D.Kalispell, MT 599011992747927
- Jamie Hettick, MDKalispell, MT 599011285744599
- Marise Johnson, M.D.Kalispell, MT 599011013958537
Common questions
What is Dennis Lee Peterson, M.D.'s NPI number?
Dennis Lee Peterson, M.D.'s National Provider Identifier (NPI) is 1205986460, issued on Jan 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Lee Peterson, M.D. located?
The NPPES record lists a practice address at 705 6TH Avenue East, Kalispell, MT, 59901. Phone: (406) 755-7366. Providers update this record themselves, so call before visiting.
How can I verify Dennis Lee Peterson, M.D.'s license?
NPPES lists Montana license number MED-PHYS-LIC-4557, 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 Dennis Lee Peterson, M.D. prescribe under Medicare Part D?
In 2024, Dennis Lee Peterson, M.D. had 333 Medicare Part D claims for 50 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.