Mark David Schaefer, M.D.
Emergency Medicine Physician · Billings, MT
Mark David Schaefer, M.D. is an emergency medicine physician with a practice address in Billings, Montana, and NPI 1043664022, issued on Apr 15, 2016. Check the license (Montana 77136, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark David Schaefer
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 77136 MT
Self-reported in NPPES; status is on the state search - Practice location
- 1233 N 30TH St, Billings, MT 59101
- Phone
- (406) 237-4116
- Enumerated
- Apr 15, 2016
- Record last updated
- Jul 24, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190813000226); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 243 in Montana → Look up another NPI →
Also registered at 1233 N 30TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abigail AgatepPharmacist1285505024
- Carole Anderson, NNP-BCNeonatal Nurse Practitioner1255617742
- Ty Anderson, MDEmergency Medicine Physician1043889033
- William Anderson, MDPhysical Medicine & Rehabilitation Physician1730125006
- Dean Angell, RNFlight Registered Nurse1265718183
- Charles Aragon, M.D.Anesthesiology Physician1093782591
Verify Mark David Schaefer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 77136Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% fewer Medicare Part D claims than the average emergency medicine physician in 2024
221 Medicare Part D claims for 146 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 47 claims were for opioids.
Most prescribed
- Ondansetron Odt37 claims
- Oxycodone Hcl32 claims
- Cephalexin18 claims
- Methocarbamol14 claims
- Prednisone14 claims
- Hydrocodone-Acetaminophen11 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
- Scl Health Medical Group - Billings LLCBillings, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark David Schaefer among 243 emergency medicine physician records in Montana
Mark David Schaefer, M.D. is one of 243 emergency medicine physician records with a practice address in Montana. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 86% of them.
- NPI issued2016 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2016 · median 2009 among the 144 with a school on file
- Record last updated2019 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 emergency medicine physician records list a practice address in Billings
They are 44 of the 4,035 NPPES records with a practice address in Billings, and 243 emergency medicine physician records in Montana.
All 243 in Montana → Every provider in Billings → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- James Bentler, MDBillings, MT 591011962435198
- James Boslough, MDBillings, MT 591011215960448
- James Buchan, MDBillings, MT 591011114950342
- Michael Bush, MDBillings, MT 591011609892397
- Barbara Curry, MDBillings, MT 591011649381203
- Corby Freitag, MDBillings, MT 591011376576504
- John Kominsky, MDBillings, MT 591011275566416
- Curtis Lee, MDBillings, MT 591011891718615
Common questions
What is Mark David Schaefer, M.D.'s NPI number?
Mark David Schaefer, M.D.'s National Provider Identifier (NPI) is 1043664022, issued on Apr 15, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Mark David Schaefer, M.D. located?
The NPPES record lists a practice address at 1233 N 30TH St, Billings, MT, 59101. Phone: (406) 237-4116. Providers update this record themselves, so call before visiting.
How can I verify Mark David Schaefer, M.D.'s license?
NPPES lists Montana license number 77136, 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 Mark David Schaefer, M.D. prescribe under Medicare Part D?
In 2024, Mark David Schaefer, M.D. had 221 Medicare Part D claims for 146 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.