Mark A. Demar, M.D.
Surgery Physician · Carson City, NV
Mark A. Demar, M.D. is a surgery physician with a practice address in Carson City, Nevada, and NPI 1821050253, issued on Apr 3, 2006. Check the license (Nevada 12637, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark A. Demar
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 12637 NV
Self-reported in NPPES; status is on the state search - Practice location
- 1761 College Pkwy Ste 112, Carson City, NV 89706
- Phone
- (775) 684-9009
- Enumerated
- Apr 3, 2006
- Record last updated
- May 9, 2022
- Medicaid ID
- 636128 AZ
- Medicare enrollment
- Enrolled (PECOS I20080519000260); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 1991
- Entity
- Type 1 · individual
Also registered at 1761 College Pkwy Ste 112
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kraig Knoll, MDSurgery Physician1225028277
- Keith Newton, MDPain Medicine (Anesthesiology) Physician1710482955
Verify Mark A. Demar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license 12637Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average surgery physician in 2024
111 Medicare Part D claims for 102 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims. 19 claims were for opioids.
Most prescribed
- Peg-3350 And Electrolytes43 claims
- Gavilyte-G18 claims
- Oxycodone-Acetaminophen16 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
3 hospitals and group practices
- Banner Churchill Community HospitalFallon, NV · Critical Access Hospitals2 of 5 stars
- Banner Health Physicians West LLCFallon, NV
- Northeastern Nevada Physician Practices LLCElko, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Surgery Physician providers in Nevada
There are 236 surgery physician records in Nevada.
Other surgery physician records in Nevada
- Lambert Abeyatunge, MDLas Vegas, NV1154439677
- Mustafa Ahmed, MDHenderson, NV1841239118
- Syed Ahmed, MDLas Vegas, NV1508807538
- Ara AmirkhanianLas Vegas, NV1255960191
- Rupert AndersonReno, NV1598875437
- Matthew Apel, M.D.Las Vegas, NV1518279819
- Travis Arnold-Lloyd, MDNellis Afb, NV1164747390
- Denis Astarita, M.D.Ely, NV1558587931
- James Atkinson, M.D.Las Vegas, NV1629160627
- Alexander Ayzengart, M.D.Reno, NV1265561047
Common questions
What is Mark A. Demar, M.D.'s NPI number?
Mark A. Demar, M.D.'s National Provider Identifier (NPI) is 1821050253, issued on Apr 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Demar, M.D. located?
The NPPES record lists a practice address at 1761 College Pkwy Ste 112, Carson City, NV, 89706. Phone: (775) 684-9009. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Demar, M.D.'s license?
NPPES lists Nevada license number 12637, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark A. Demar, M.D. prescribe under Medicare Part D?
In 2024, Mark A. Demar, M.D. had 111 Medicare Part D claims for 102 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
What is Mark A. Demar, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.