Mark Langlois, M.D.
Family Medicine Physician · Frankfort, MI
Mark Langlois, M.D. is a family medicine physician with a practice address in Frankfort, Michigan, and NPI 1295154656, issued on Apr 14, 2014. Check the license (Michigan 4301105292, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Mark Langlois
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 4301105292 MI
Self-reported in NPPES; status is on the state search - Practice location
- PO Box 1652, Frankfort, MI 49635
- Phone
- (231) 955-9565
- Enumerated
- Apr 14, 2014
- Record last updated
- May 20, 2026
- Fax
- (231) 220-9568
- Medicare enrollment
- Enrolled (PECOS I20170706001188); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Verify Mark Langlois in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301105292Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average family medicine physician in 2024
12,369 Medicare Part D claims for 376 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 286 claims were for opioids.
Most prescribed
- Atorvastatin Calcium700 claims
- Levothyroxine Sodium455 claims
- Eliquis423 claims
- Amlodipine Besylate337 claims
- Furosemide328 claims
- Gabapentin328 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
- Great Lakes Therapy Housecalls PCTraverse City, MI
- Sound Inpatient Physicians-Michigan PLLCTraverse City, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Langlois among 6,013 family medicine physician records in Michigan
Mark Langlois, M.D. is one of 6,013 family medicine physician records with a practice address in Michigan. 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 2014, is newer than 66% of them.
- NPI issued2014 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2013 · median 2008 among the 3,493 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 family medicine physician records list a practice address in Frankfort
They are 5 of the 59 NPPES records with a practice address in Frankfort, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Frankfort → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Douglas Coles, MDFrankfort, MI 496351992806285
- Gerard Mahoney, D.O.Frankfort, MI 496351659385219
- Elizabeth Moore, MDFrankfort, MI 496351316681216
- Nancy Smith, M.D.Frankfort, MI 496351659488104
- Deborah Warren, MDGrawn, MI 496371043315492
- Cyrus Ghaemi, D.O.Empire, MI 496301215348842
- Kathryn Krezoski-Evans, D.O.Empire, MI 496301194136721
- Steven Pray, D.O.Elk Rapids, MI 496291447333265
Common questions
What is Mark Langlois, M.D.'s NPI number?
Mark Langlois, M.D.'s National Provider Identifier (NPI) is 1295154656, issued on Apr 14, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Mark Langlois, M.D. located?
The NPPES record lists a practice address at PO Box 1652, Frankfort, MI, 49635. Phone: (231) 955-9565. Providers update this record themselves, so call before visiting.
How can I verify Mark Langlois, M.D.'s license?
NPPES lists Michigan license number 4301105292, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Langlois, M.D. prescribe under Medicare Part D?
In 2024, Mark Langlois, M.D. had 12,369 Medicare Part D claims for 376 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.