Mark Mounajjed, MD
Critical Care Medicine (Internal Medicine) Physician · Madison, WI
Mark Mounajjed, MD is a critical care medicine (internal medicine) physician with a practice address in Madison, Wisconsin, and NPI 1891789897, issued on Sep 6, 2005. Check the license (Wisconsin 45870, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mark Mounajjed
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- 45870 WI
45870-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 600 Highland Ave, Madison, WI 53792
- Phone
- (608) 263-0946
- Enumerated
- Sep 6, 2005
- Entity
- Type 1 · individual
Also registered at 600 Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael AabergSurgery Physician1346991064
- Carrah Aadrik, CRNACertified Registered Nurse Anesthetist1326423286
- Daniel Abbott, MDSurgical Oncology Physician1750412615
- Alaa Abd-ElsayedPain Medicine Physician1194967703
- Safiyya Abdulkadir, MDRheumatology Physician1093455826
- Edwin Abel, M.D.Urology Physician1083800510
Verify Mark Mounajjed in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 45870Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
79% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
232 Medicare Part D claims for 66 beneficiaries, against an average of 1,103 among the 4,049 providers of this specialty who prescribed in Part D.
Most prescribed
- Penicillin V Potassium18 claims
- Amoxicillin17 claims
- Vancomycin Hcl17 claims
- Ceftriaxone16 claims
- Ciprofloxacin Hcl14 claims
- Cefadroxil13 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.
One hospital or facility affiliation
- University OF Wisconsin Medical Foundation IncMadison, WI
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Critical Care Medicine (Internal Medicine) Physician providers in Wisconsin
There are 140 critical care medicine (internal medicine) physician records in Wisconsin.
Other critical care medicine (internal medicine) physician records in Wisconsin
- Majdi Al Nabulsi, MDMilwaukee, WI1063958114
- Abdullah Al Twal, MDMarshfield, WI1780090225
- Muhammad Alkhan, MDJanesville, WI1114950813
- John Almquist, MDAppleton, WI1104810118
- Rodolfo Alpizar-Rivas, MDMilwaukee, WI1427579457
- Matthew Anderson, M.D.Madison, WI1285922567
- Venkata Vijay Anne, MDMilwaukee, WI1972520823
- Femi Ayanrino, MDAppleton, WI1619962180
- Ankita Badhwar, DOMadison, WI1194344796
- Jay Balachandran, MDMequon, WI1396786273
Common questions
What is Mark Mounajjed, MD's NPI number?
Mark Mounajjed, MD's National Provider Identifier (NPI) is 1891789897, issued on Sep 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Mounajjed, MD located?
The NPPES record lists a practice address at 600 Highland Ave, Madison, WI, 53792. Phone: (608) 263-0946. Providers update this record themselves, so call before visiting.
How can I verify Mark Mounajjed, MD's license?
NPPES lists Wisconsin license number 45870, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Mounajjed, MD prescribe under Medicare Part D?
In 2024, Mark Mounajjed, MD had 232 Medicare Part D claims for 66 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 1,103. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.