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CALVIN M MAR MD
NPI 1972514925
Obstetrics & Gynecology in Orland Park, IL

Active since August 11, 2006PECOS Enrolled
10735 W 159TH STREET, ORLAND PARK, IL 60467(708) 873-7775(708) 873-0192 Get Directions Write a Review

NPPES record last updated: August 10, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 10, 2023, Jan 27, 2021, May 23, 2017 (3 updates tracked since 2017).

About Calvin M Mar Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CALVIN M MAR MD (NPI 1972514925) is an individual obstetrics & gynecology provider in Orland Park, Illinois, licensed in Illinois (036067226) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1972514925
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameCALVIN M MARCredential: MD
Location Address10735 W 159TH STREETOrland Park, IL 60467
Mailing AddressPo Box 713260Chicago, IL 60677-1260 · (630) 469-9200
Phone(708) 873-7775
Fax(708) 873-0192
Sole ProprietorNo
Enumeration DateAugust 11, 2006
Last NPPES UpdateAugust 10, 20233 updates tracked since enumeration
NPPES CertifiedAugust 10, 2023
✔ NPI 1972514925 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in IL · 036067226
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
10735 W 159TH STREET, Orland Park, IL 60467
Open in Google Maps ↗

Other Identifiers 1

Medicaid036067226IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Calvin M Mar Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Calvin Mar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Dupage Medical Group Ltd
17 mi
Multi-Specialty
1100 W 31ST ST, STE 300
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 1,061 clinicians in this Medicare group
NPI 1801833983 (630) 469-9200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60467 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GLENWOOD MEDICAL CORPORATION LTD
Obstetrics & Gynecology
10735 W 159TH STREET
ORLAND PARK, IL 60467
Cook County (708) 873-7775
GLENWOOD MEDICAL CORP LTD
Obstetrics & Gynecology
10735 W 159TH STREET
ORLAND PARK, IL 60467
Cook County (708) 873-7775
JAMES B BRAY MD
Obstetrics & Gynecology
10735 W 159TH STREET
ORLAND PARK, IL 60467
Cook County (708) 873-7775
MICHAEL A BRUSCA MD
Obstetrics & Gynecology
10735 W 159TH STREET
ORLAND PARK, IL 60467
Cook County (708) 873-7775
GLENWOOD MEDICAL CORPORATION LTD
Obstetrics & Gynecology
10735 W 159TH STREET
ORLAND PARK, IL 60467
Cook County (708) 873-7775

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Calvin Mar's NPI number?

The NPI number for Calvin Mar is 1972514925. It was assigned to this individual provider in the NPPES registry on August 11, 2006.

Where is Calvin Mar located?

Calvin Mar practices at 10735 W 159th Street, Orland Park, IL 60467. The listed phone number is (708) 873-7775.

What is Calvin Mar's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Calvin Mar enrolled in Medicare?

Yes. Calvin Mar is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Calvin Mar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Calvin Mar reassigns Medicare benefits to Dupage Medical Group Ltd (Downers Grove, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Calvin Mar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Calvin Mar was last updated on August 10, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.