Matthew William Diehl, MD
Internal Medicine Physician · Minneapolis, MN
Matthew William Diehl, MD is an internal medicine physician with a practice address in Minneapolis, Minnesota, and NPI 1548529654, issued on May 9, 2012. Check the license (Minnesota 66321, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Matthew William Diehl
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 66321 MN
A146697 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2450 Riverside Ave, Minneapolis, MN 55454
- Phone
- (612) 672-6000
- Enumerated
- May 9, 2012
- Record last updated
- Sep 23, 2024
- Medicaid ID
- 00327034 CO
- Medicare enrollment
- Enrolled (PECOS I20191024001026); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,632 in Minnesota → Look up another NPI →
Also registered at 2450 Riverside Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Matthew William Diehl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 66321Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
105 Medicare Part D claims for 44 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Montelukast Sodium11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Fairview Health ServicesMinneapolis, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew William Diehl among 2,632 internal medicine physician records in Minnesota
Matthew William Diehl, MD is one of 2,632 internal medicine physician records with a practice address in Minnesota. 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 2012, is newer than 62% of them.
- NPI issued2012 · 62% of these records are older, 36% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2012 · median 2008 among the 1,700 with a school on file
- Record last updated2024 · 57% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
653 internal medicine physician records list a practice address in Minneapolis
They are 653 of the 22,918 NPPES records with a practice address in Minneapolis, and 2,632 internal medicine physician records in Minnesota.
All 2,632 in Minnesota → Every provider in Minneapolis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Jonathan Kirsch, M.D.Minneapolis, MN 554541336184464
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- Rodney McFadden, MDMinneapolis, MN 554541174591770
Common questions
What is Matthew William Diehl, MD's NPI number?
Matthew William Diehl, MD's National Provider Identifier (NPI) is 1548529654, issued on May 9, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Matthew William Diehl, MD located?
The NPPES record lists a practice address at 2450 Riverside Ave, Minneapolis, MN, 55454. Phone: (612) 672-6000. Providers update this record themselves, so call before visiting.
How can I verify Matthew William Diehl, MD's license?
NPPES lists Minnesota license number 66321, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Matthew William Diehl, MD prescribe under Medicare Part D?
In 2024, Matthew William Diehl, MD had 105 Medicare Part D claims for 44 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Matthew William Diehl, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.