Calvin M. Mar, MD
Obstetrics & Gynecology Physician · Orland Park, IL
Calvin M. Mar, MD is an obstetrics & gynecology physician with a practice address in Orland Park, Illinois, and NPI 1972514925, issued on Aug 11, 2006. Check the license (Illinois 036067226, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Calvin M. Mar
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036067226 IL
Self-reported in NPPES; status is on the state search - Practice location
- 10735 W 159TH Street, Orland Park, IL 60467
- Phone
- (708) 873-7775
- Enumerated
- Aug 11, 2006
- Record last updated
- Aug 10, 2023
- Fax
- (708) 873-0192
- Medicaid ID
- 036067226 IL
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 10735 W 159TH Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Bray, MDObstetrics & Gynecology Physician1659384378
- Michael Brusca, MDObstetrics & Gynecology Physician1881605830
Verify Calvin M. Mar 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 036067226Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
66 Medicare Part D claims for 27 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol12 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.
Calvin M. Mar among 2,062 obstetrics & gynecology physician records in Illinois
Calvin M. Mar, MD is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2023 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 obstetrics & gynecology physician records list a practice address in Orland Park
They are 21 of the 1,925 NPPES records with a practice address in Orland Park, and 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Orland Park → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- James Bray, MDOrland Park, IL 604671659384378
- Michael Brusca, MDOrland Park, IL 604671881605830
- Jack Doah, D.O.Orland Park, IL 604671881748135
- Jessica Dy-Johnson, M.D.Orland Park, IL 604671750693966
- Sam Flosi, D.O.Orland Park, IL 604671164538161
- Thomas Iannucci, M.D.Orland Park, IL 604671851687453
- Alka Kale, MDOrland Park, IL 604671801894969
- Edward Ryan, MDOrland Park, IL 604671447251053
Common questions
What is Calvin M. Mar, MD's NPI number?
Calvin M. Mar, MD's National Provider Identifier (NPI) is 1972514925, issued on Aug 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Calvin M. Mar, MD located?
The NPPES record lists a practice address at 10735 W 159TH Street, Orland Park, IL, 60467. Phone: (708) 873-7775. Providers update this record themselves, so call before visiting.
How can I verify Calvin M. Mar, MD's license?
NPPES lists Illinois license number 036067226, 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 Calvin M. Mar, MD prescribe under Medicare Part D?
In 2024, Calvin M. Mar, MD had 66 Medicare Part D claims for 27 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.