Calvin M Mar, MD - Medicare Obstetrics/gynecology in Orland Park, IL

Calvin M Mar, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Orland Park, Illinois. He went to University Of Texas Southwestern Medical School At Dallas and graduated in 1982 and has 42 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice Dupage Medical Group Ltd and his current practice location is 10735 W 159th Street, Orland Park, Illinois. You can reach out to his office (for appointments etc.) via phone at (708) 873-7775.

Calvin M Mar is licensed to practice in Illinois (license number 036067226) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1972514925.

Contact Information

Calvin M Mar, MD
10735 W 159th Street,
Orland Park, IL 60467
(708) 873-7775
(708) 873-0192

Map and Direction




Physician's Profile

Full NameCalvin M Mar
GenderMale
SpecialityObstetrics/gynecology
Experience42 Years
Location10735 W 159th Street, Orland Park, Illinois
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Calvin M Mar attended and graduated from University Of Texas Southwestern Medical School At Dallas in 1982
  NPI Data:
  • NPI Number: 1972514925
  • Provider Enumeration Date: 08/11/2006
  • Last Update Date: 08/10/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 5991974016
  • Enrollment ID: I20111010000532

Medical Identifiers

Medical identifiers for Calvin M Mar such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1972514925NPI-NPPES
036067226MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 036067226 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Advocate Christ Hospital & Medical CenterOak lawn, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Dupage Medical Group Ltd54966679411209

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Calvin M Mar allows following entities to bill medicare on his behalf.
Entity NameDupage Medical Group Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801833983
PECOS PAC ID: 5496667941
Enrollment ID: O20031110000535
Entity NameGlenwood Medical Corporation Ltd
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912947888
PECOS PAC ID: 8123297280
Enrollment ID: O20110805000168

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Calvin M Mar is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Calvin M Mar, MD
Po Box 713260,
Chicago, IL 60677-1260

Ph: (630) 469-9200
Calvin M Mar, MD
10735 W 159th Street,
Orland Park, IL 60467

Ph: (708) 873-7775

Reviews and Comments


Obstetrics & Gynecology Doctors in Orland Park, IL

Michael D Villwock, APRN, CNP
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 15300 West Ave Ste 20, Orland Park, IL 60462
Phone: 708-460-5550    Fax: 708-226-2595
Jennifer Chang, MD
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 16011 108th Ave, Orland Park, IL 60467
Phone: 708-364-0424    
Dr. Fouad Al-qawasmi, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 7714 W 159th St, Orland Park, IL 60462
Phone: 708-429-2020    Fax: 708-598-0123
Whitney Jean Sigala, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 16011 108th Ave, Orland Park, IL 60467
Phone: 708-873-2000    
Dr. Sam F Flosi, D.O.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 16609 107th St, Orland Park, IL 60467
Phone: 708-645-8080    Fax: 708-645-8081
Mrs. Megan Joy Dejong, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 15300 West Ave, Suite 120, Orland Park, IL 60462
Phone: 708-590-5304    Fax: 708-590-5308
Dr. Kara Linn Totonchi, D.O.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 16011 108th Ave, Orland Park, IL 60467
Phone: 708-873-2000    Fax: 708-364-0430

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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