Mark W. Armstrong, DO
Family Medicine Physician · Sparta, MI
Mark W. Armstrong, DO is a family medicine physician with a practice address in Sparta, Michigan, and NPI 1932104882, issued on Jun 16, 2005. Check the license (Michigan 5101008843, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Mark W. Armstrong
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 5101008843 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2111 12 Mile RD NW, Sparta, MI 49345
- Phone
- (616) 391-8470
- Enumerated
- Jun 16, 2005
- Record last updated
- Feb 24, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (616) 391-8495
- Medicaid ID
- 3072667 MI
- Medicare enrollment
- Enrolled (PECOS I20080529000791); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 1984
- Entity
- Type 1 · individual
Also registered at 2111 12 Mile RD NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Bell, FNP-CFamily Nurse Practitioner1255063012
- Beverly Bond, NPNurse Practitioner1750537924
- David Bouwkamp, PA-CPhysician Assistant1982689733
- Gianina Corpus, MDFamily Medicine Physician1679987812
- Heather Duthler, LMSW, CAADC, CCSSocial Worker1538551346
- Julie Jolliffe, PA-CPhysician Assistant1477964799
Verify Mark W. Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101008843Check 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% fewer Medicare Part D claims than the average family medicine physician in 2024
3,375 Medicare Part D claims for 532 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 44 claims were for opioids.
Most prescribed
- Atorvastatin Calcium327 claims
- Omeprazole155 claims
- Lisinopril140 claims
- Levothyroxine Sodium115 claims
- Amlodipine Besylate105 claims
- Losartan Potassium103 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 3 group practices
- Spectrum Health HospitalsGrand Rapids, MI
- Spectrum Health Primary Care PartnersSparta, MI
- Spectrum Health UnitedGreenville, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
13 family medicine physician records list a practice address in Sparta
They are 13 of the 90 NPPES records with a practice address in Sparta, and 6,013 family medicine physician records in Michigan.
All 13 in Sparta → All 6,013 in Michigan → Every provider in Sparta →
Other family medicine physician records in Michigan
- Asma AbbasHamtramck, MI1982946463
- Saadia Abbas, MDChesterfield, MI1619136868
- Faezeh AbbasiMonroe, MI1144065921
- Layla Abbasi, MDWayne, MI1346177607
- Marisa Abbo, DORochester Hills, MI1184605388
- Cathleen Abbott, M.D.East Lansing, MI1275630501
- Leah Abbott, MDGwinn, MI1760987341
- Nina Abboud, DORochester Hills, MI1639750557
- Ryan Abboud, DOBingham Farms, MI1104353077
- Christina Abd, MDSterling Heights, MI1770371965
Common questions
What is Mark W. Armstrong, DO's NPI number?
Mark W. Armstrong, DO's National Provider Identifier (NPI) is 1932104882, issued on Jun 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark W. Armstrong, DO located?
The NPPES record lists a practice address at 2111 12 Mile RD NW, Sparta, MI, 49345. Phone: (616) 391-8470. Providers update this record themselves, so call before visiting.
How can I verify Mark W. Armstrong, DO's license?
NPPES lists Michigan license number 5101008843, 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 W. Armstrong, DO prescribe under Medicare Part D?
In 2024, Mark W. Armstrong, DO had 3,375 Medicare Part D claims for 532 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.