Mark Timothy Monahan, M.D.
Emergency Medicine Physician · Dixon, IL
Mark Timothy Monahan, M.D. is an emergency medicine physician with a practice address in Dixon, Illinois, and NPI 1518998327, issued on Jul 6, 2006. Check the license (Illinois 036107925, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mark Timothy Monahan
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 036107925 IL
01057437A IN
Self-reported in NPPES; status is on the state search - Practice location
- 403 E 1St St, Dixon, IL 61021
- Phone
- (815) 288-5531
- Enumerated
- Jul 6, 2006
- Record last updated
- Aug 5, 2025
- Fax
- (815) 285-5558
- Medicaid IDs
- 4782693 MI
200432460 IN - Medicare enrollment
- Enrolled (PECOS I20160920001816); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 403 E 1St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Timothy Monahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036107925Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average emergency medicine physician in 2024
367 Medicare Part D claims for 247 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 52 claims were for opioids.
Most prescribed
- Naproxen57 claims
- Hydrocodone-Acetaminophen40 claims
- Prednisone31 claims
- Cephalexin30 claims
- Ondansetron Odt28 claims
- Cyclobenzaprine Hcl24 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 2 group practices
- Osf Multi-Specialty GroupDixon, IL
- South Bend Emergency Physicians IncSouth Bend, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Timothy Monahan among 3,291 emergency medicine physician records in Illinois
Mark Timothy Monahan, M.D. is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 68% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2000 · median 2012 among the 1,867 with a school on file
- Record last updated2025 · 47% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 emergency medicine physician records list a practice address in Dixon
They are 8 of the 693 NPPES records with a practice address in Dixon, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Dixon → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Earel Belford, MDDixon, IL 610211861439010
- Sikander Hayat, M.D.Dixon, IL 610211902872104
- Uyen Nguyen, DODixon, IL 610211558898783
- Marie Nowak, MDDixon, IL 610211033272943
- Jonathan Ortman, M.D.Dixon, IL 610211649248204
- Kristine Pultorak, D.O.Dixon, IL 610211306814298
- Joann Zarnke, MDDixon, IL 610211538321096
- Erich Awender, MDFreeport, IL 610321295703510
Common questions
What is Mark Timothy Monahan, M.D.'s NPI number?
Mark Timothy Monahan, M.D.'s National Provider Identifier (NPI) is 1518998327, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Timothy Monahan, M.D. located?
The NPPES record lists a practice address at 403 E 1St St, Dixon, IL, 61021. Phone: (815) 288-5531. Providers update this record themselves, so call before visiting.
How can I verify Mark Timothy Monahan, M.D.'s license?
NPPES lists Illinois license number 036107925, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Timothy Monahan, M.D. prescribe under Medicare Part D?
In 2024, Mark Timothy Monahan, M.D. had 367 Medicare Part D claims for 247 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.