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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. BRENDA ONIA M.D.
NPI 1710936687
Obstetrics & Gynecology in Chicago, IL

Active since May 09, 2006Opted out of Medicare · through Dec 11, 2027
4753 N ELSTON AVE, MAYFAIR HEALTHCARE CENTER, CHICAGO, IL 60630(773) 205-7200(773) 481-7577 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jul 13, 2026, Jul 21, 2022 (2 updates tracked since 2022).

About Dr. Brenda Onia M.d. NPPES

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

DR. BRENDA ONIA M.D. (NPI 1710936687) is an individual obstetrics & gynecology provider in Chicago, Illinois and active in the NPI registry since May 2006. She has opted out of Medicare through December 11, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1710936687
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. BRENDA ONIACredential: M.D.
Location Address4753 N ELSTON AVE, MAYFAIR HEALTHCARE CENTERChicago, IL 60630-4002
Mailing Address4753 N Elston Ave, Mayfair Healthcare CenterChicago, IL 60630-4002 · (773) 205-7200 · Fax (773) 481-7577
Phone(773) 205-7200
Fax(773) 481-7577
Sole ProprietorNo
Enumeration DateMay 9, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1710936687 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
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.

4753 N ELSTON AVE, Chicago, IL 60630
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Brenda Onia M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from December 11, 2017 through December 11, 2027.

Opt-Out Effective DateDecember 11, 2017
Opt-Out In Effect ThroughDecember 11, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60630 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 15

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

DR. MICHELLE TRANDAI M.D.
Obstetrics & Gynecology
4753 N ELSTON AVE, MAYFAIR HEALTHCARE CENTER
CHICAGO, IL 60630
Cook County (773) 205-7200
DR. ANITA MYSLIWIEC M.D.
Internal Medicine
4753 N ELSTON AVE
CHICAGO, IL 60630
Cook County (773) 427-4900
ALL CARE FAMILY MEDICAL INC
Internal Medicine
4753 N ELSTON AVE
CHICAGO, IL 60630
Cook County (773) 427-4900
ANNIE LAMORENA CALLANGAN M.D.
Family Medicine
4753 N ELSTON AVE
CHICAGO, IL 60630
Cook County (773) 989-3845
MS. JOY HONTANOSAS IRIZARI PHYSICAL THERAPIST
Physical Therapist
4753 N ELSTON AVE, SWEDISH COVENANT HOSPITAL
CHICAGO, IL 60630
Cook County (773) 878-8200
OKSANA BARILYAK MD
Family Medicine
4753 N ELSTON AVE
CHICAGO, IL 60630
Cook County (773) 205-7200
ANNA KULIK-CARLOS D.O.
Family Medicine
4753 N ELSTON AVE
CHICAGO, IL 60630
Cook County (773) 205-7200
DR. QUOC TOMMY DANG D.O.
Family Medicine
4753 N ELSTON AVE
CHICAGO, IL 60630
Cook County (773) 205-7200

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 Brenda Onia's NPI number?

The NPI number for Brenda Onia is 1710936687. It was assigned to this individual provider in the NPPES registry on May 9, 2006.

Where is Brenda Onia located?

Brenda Onia practices at 4753 N Elston Ave Mayfair Healthcare Center, Chicago, IL 60630. The listed phone number is (773) 205-7200.

What is Brenda Onia's specialty?

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

Is Brenda Onia enrolled in Medicare?

No. Brenda Onia has opted out of Medicare through December 11, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Brenda Onia was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.