Mark Schaaf, D.O.
Family Medicine Physician · Mount Morris, MI
Mark Schaaf, D.O. is a family medicine physician with a practice address in Mount Morris, Michigan, and NPI 1306932611, issued on Oct 5, 2006. Check the license (Michigan MS013800, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Mark Schaaf
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MS013800 MI
Self-reported in NPPES; status is on the state search - Practice location
- 4485 E Mount Morris RD, Mount Morris, MI 48458
- Phone
- (810) 640-1942
- Enumerated
- Oct 5, 2006
- Record last updated
- May 28, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (810) 640-1942
- Medicaid ID
- 114568764 MI
- Medicare enrollment
- Enrolled (PECOS I20040219000922); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 4485 E Mount Morris RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Arnold, DOFamily Medicine Physician1477639649
Verify Mark Schaaf in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license MS013800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.4 times the Medicare Part D claims of the average family medicine physician in 2024
19,262 Medicare Part D claims for 827 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 2,201 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen1,592 claims
- Levothyroxine Sodium574 claims
- Atorvastatin Calcium564 claims
- Amlodipine Besylate559 claims
- Lisinopril478 claims
- Omeprazole444 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.
Industry payments in 2024: $626.23
31 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Genesys Pho LLCBurton, MI
- Henry Ford Medical Group GenesysMount Morris, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Schaaf among 6,013 family medicine physician records in Michigan
Mark Schaaf, D.O. 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 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 56% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1998 · median 2008 among the 3,493 with a school on file
- Record last updated2010 · 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 Mount Morris
They are 5 of the 140 NPPES records with a practice address in Mount Morris, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Mount Morris → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jeffrey Arnold, DOMount Morris, MI 484581477639649
- Allan Ebert, DOMount Morris, MI 484581558463372
- Charles Ellsworth, DOMount Morris, MI 484581780786707
- Scott Graves, M.D.Mount Morris, MI 484581023169026
- Deborah Conlon, NPMontrose, MI 484571407829302
- Antonio DicarloNorth Branch, MI 484611023631785
- Kathleen Perkins, D.O.Metamora, MI 484551134330244
- William Starbird, MDNorth Branch, MI 484611629172069
Common questions
What is Mark Schaaf, D.O.'s NPI number?
Mark Schaaf, D.O.'s National Provider Identifier (NPI) is 1306932611, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Schaaf, D.O. located?
The NPPES record lists a practice address at 4485 E Mount Morris RD, Mount Morris, MI, 48458. Phone: (810) 640-1942. Providers update this record themselves, so call before visiting.
How can I verify Mark Schaaf, D.O.'s license?
NPPES lists Michigan license number MS013800, 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 Schaaf, D.O. prescribe under Medicare Part D?
In 2024, Mark Schaaf, D.O. had 19,262 Medicare Part D claims for 827 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.