My N. Mark, M.D.
Family Medicine Physician · Chicago, IL
My N. Mark, M.D. is a family medicine physician with a practice address in Chicago, Illinois, and NPI 1396772661, issued on Jun 26, 2006. Check the license (Illinois 036111701, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- My N. Mark
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036111701 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4600 N Ravenswood Ave FL 2, Chicago, IL 60640
- Phone
- (773) 561-7500
- Enumerated
- Jun 26, 2006
- Record last updated
- Apr 9, 2025
- Fax
- (773) 561-7612
- Medicare enrollment
- Enrolled (PECOS I20050308000616); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2001
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 4600 N Ravenswood Ave FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Zachary Lamaster, D.O.Family Medicine Physician1265667810
- Margaret Wiedmann, MDFamily Medicine Physician1063430783
Verify My N. Mark 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 036111701Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average family medicine physician in 2024
269 Medicare Part D claims for 206 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Hyclate42 claims
- Amoxicillin-Clavulanate Potass33 claims
- Cephalexin31 claims
- Prednisone19 claims
- Methylprednisolone13 claims
- Paxlovid11 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 one group practice
- Northwestern Medical Faculty FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
My N. Mark among 6,215 family medicine physician records in Illinois
My N. Mark, M.D. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2001 · median 2006 among the 3,714 with a school on file
- Record last updated2025 · 54% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,593 family medicine physician records list a practice address in Chicago
They are 1,593 of the 63,379 NPPES records with a practice address in Chicago, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Chicago → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sylveena Ali, DOChicago, IL 606401134174931
- Mariela Cano, M.D.Chicago, IL 606401053342204
- Charles Crotteau, M.D.Chicago, IL 606401295757136
- Jose Elizondo, MDChicago, IL 606401912934985
- Anees Fatima, MDChicago, IL 606401154341709
- Richard Guthmann, MDChicago, IL 606401831112978
- James Mo, MDChicago, IL 606401962486571
- Kevin Murphy, MDChicago, IL 606401932102563
Common questions
What is My N. Mark, M.D.'s NPI number?
My N. Mark, M.D.'s National Provider Identifier (NPI) is 1396772661, issued on Jun 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is My N. Mark, M.D. located?
The NPPES record lists a practice address at 4600 N Ravenswood Ave FL 2, Chicago, IL, 60640. Phone: (773) 561-7500. Providers update this record themselves, so call before visiting.
How can I verify My N. Mark, M.D.'s license?
NPPES lists Illinois license number 036111701, 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 My N. Mark, M.D. prescribe under Medicare Part D?
In 2024, My N. Mark, M.D. had 269 Medicare Part D claims for 206 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.