Mary S. McMillan, MD
Internal Medicine Physician · Blaine, MN
Mary S. McMillan, MD is an internal medicine physician with a practice address in Blaine, Minnesota, and NPI 1861451221, issued on Mar 22, 2006. Check the license (Minnesota 40497, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Mary S. McMillan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 40497 MN
Self-reported in NPPES; status is on the state search - Practice location
- 10705 Town Square Dr NE Ste 100, Blaine, MN 55449
- Phone
- (763) 236-5400
- Enumerated
- Mar 22, 2006
- Record last updated
- Nov 10, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (763) 236-5350
- Medicaid ID
- 251327700 MN
- Medicare enrollment
- Enrolled (PECOS I20100526000903); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,632 in Minnesota → Look up another NPI →
Also registered at 10705 Town Square Dr NE Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary S. McMillan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 40497Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average internal medicine physician in 2024
5,019 Medicare Part D claims for 403 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 86 claims were for opioids.
Most prescribed
- Levothyroxine Sodium287 claims
- Losartan Potassium285 claims
- Atorvastatin Calcium279 claims
- Rosuvastatin Calcium264 claims
- Amlodipine Besylate201 claims
- Metoprolol Succinate152 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 one group practice
- Allina Health SystemAnnandale, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary S. McMillan among 2,632 internal medicine physician records in Minnesota
Mary S. McMillan, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1993 · median 2008 among the 1,700 with a school on file
- Record last updated2020 · 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).
Internal Medicine Physician providers in Minnesota
There are 2,632 internal medicine physician records in Minnesota.
All 2,632 in Minnesota → Every provider in Blaine → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- William Schmidt, MDBlaine, MN 554491669533055
- Samira Sugule, MDBlaine, MN 554491235690611
- Mary MileyPlymouth, MN 554471518944693
- Stephanie Norris, M.D.Plymouth, MN 554471093782716
- Sally Engebretson, DOPlymouth, MN 554461316900590
- Wanda Ethen, MDPlymouth, MN 554461154365393
- Maren PetersonPlymouth, MN 554461881678969
- Mark Gilberstadt, MDMinneapolis, MN 554541881660397
Common questions
What is Mary S. McMillan, MD's NPI number?
Mary S. McMillan, MD's National Provider Identifier (NPI) is 1861451221, issued on Mar 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary S. McMillan, MD located?
The NPPES record lists a practice address at 10705 Town Square Dr NE Ste 100, Blaine, MN, 55449. Phone: (763) 236-5400. Providers update this record themselves, so call before visiting.
How can I verify Mary S. McMillan, MD's license?
NPPES lists Minnesota license number 40497, 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 Mary S. McMillan, MD prescribe under Medicare Part D?
In 2024, Mary S. McMillan, MD had 5,019 Medicare Part D claims for 403 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.