Mark L. Grim, M.D.
Anesthesiology Physician · Duluth, MN
Mark L. Grim, M.D. is an anesthesiology physician with a practice address in Duluth, Minnesota, and NPI 1609843911, issued on Mar 6, 2006. Check the license (Minnesota 46550, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Mark L. Grim
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 46550 MN
Self-reported in NPPES; status is on the state search - Practice location
- 400 East 3RD Street, Duluth, MN 55805
- Phone
- (218) 786-8364
- Enumerated
- Mar 6, 2006
- Record last updated
- Oct 9, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040702000529); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 2000
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,042 in Minnesota → Look up another NPI →
Also registered at 400 East 3RD Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dawn Drotar, MDHospitalist Physician1891779120
- Gregory Dubla, RN,CRNACertified Registered Nurse Anesthetist1730171588
Verify Mark L. Grim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 46550Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- The Duluth Clinic LtdVirginia, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark L. Grim among 1,042 anesthesiology physician records in Minnesota
Mark L. Grim, M.D. is one of 1,042 anesthesiology physician records with a practice address in Minnesota. 71% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2000 · median 2009 among the 717 with a school on file
- Record last updated2008 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
49 anesthesiology physician records list a practice address in Duluth
They are 49 of the 4,084 NPPES records with a practice address in Duluth, and 1,042 anesthesiology physician records in Minnesota.
All 1,042 in Minnesota → Every provider in Duluth → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Norman Boucher, MDDuluth, MN 558051114976552
- Randy Braaten, M.D.Duluth, MN 558051124083233
- Stacy Coffin, MDDuluth, MN 558051194775627
- Kenneth Farrell, M.D.Duluth, MN 558051477544005
- John Gray, MDDuluth, MN 558051902857493
- Paul Gregg, MDDuluth, MN 558051568413672
- James Gregory, MDDuluth, MN 558051811999733
- David Hanson, MDDuluth, MN 558051952352080
Common questions
What is Mark L. Grim, M.D.'s NPI number?
Mark L. Grim, M.D.'s National Provider Identifier (NPI) is 1609843911, issued on Mar 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark L. Grim, M.D. located?
The NPPES record lists a practice address at 400 East 3RD Street, Duluth, MN, 55805. Phone: (218) 786-8364. Providers update this record themselves, so call before visiting.
How can I verify Mark L. Grim, M.D.'s license?
NPPES lists Minnesota license number 46550, 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.
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.