MARGARET SUTTON O'BRIEN
NPI 1134700495
Psychiatry & Neurology - Psychiatry in Chicago, IL

Q: What is Margaret O'brien's NPI number?

The NPI number for Margaret O'brien is 1134700495. It was assigned to this individual provider in the NPPES registry on April 19, 2021.

Q: What is Margaret O'brien's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Margaret O'brien was last updated on September 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.

Active since April 19, 2021PECOS EnrolledAccepts Medicare Assignment

5841 S MARYLAND AVE # 3077, CHICAGO, IL 60637(773) 834-0373 Get Directions Write a Review

NPPES record last updated: September 4, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Sep 4, 2025, Apr 19, 2021 (2 updates tracked since 2021).

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About Margaret Sutton O'brien NPPES

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

MARGARET SUTTON O'BRIEN (NPI 1134700495) is an individual psychiatry provider in Chicago, Illinois, licensed in Illinois (036168037) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, is affiliated with The University Of Chicago Medical Center, and is a graduate of University Of Texas Medical School At Houston (2021).

NPPES Registry Identity

NPI1134700495

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameMARGARET SUTTON O'BRIEN

Location Address5841 S MARYLAND AVE # 3077Chicago, IL 60637-1443

Mailing Address150 Harvester Dr Ste 300Burr Ridge, IL 60527-5965

Phone(773) 834-0373

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical School At HoustonGraduated 2021

Enumeration DateApril 19, 2021

Last NPPES UpdateSeptember 4, 20252 updates tracked since enumeration

NPPES CertifiedSeptember 4, 2025

✔ NPI 1134700495 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in IL · 036168037

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

5841 S MARYLAND AVE # 3077, Chicago, IL 60637

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Margaret Sutton O'brien is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9234531542

PECOS Enrollment IDI20250916002210

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.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

The University Of Chicago Medical Center

Acute Care Hospitals · Chicago, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140088

Location5841 South MarylandChicago, IL 60637 · Cook County

Emergency services Birthing friendly

Ingalls Memorial Hospital

Acute Care Hospitals · Harvey, IL

2/5 CMS rating

OwnershipPhysician

CMS Certification Number140191

Location1 Ingalls DriveHarvey, IL 60426 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60637 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

$183.39 typical visit price

range $60.08 – $183.39

Typical copayment $45.84 (range $15.02 – $45.84)

Most-billed visit code 99205

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 4

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

DR. FAE NOVA MD, PHD, MS

Student in an Organized Health Care Education/Training Program

5841 S MARYLAND AVE # 3077
CHICAGO, IL 60637

Cook County (773) 702-0529

DR. MARCEL BERTSCH-GOUT MD

Psychiatry & Neurology (Psychiatry)

5841 S MARYLAND AVE # 3077
CHICAGO, IL 60637

Cook County (773) 702-3858

NATALIA ROQUE

Psychiatry & Neurology (Psychiatry)

5841 S MARYLAND AVE # 3077
CHICAGO, IL 60637

Cook County (773) 834-0373

ANANYA MUNJAL MD

Psychiatry & Neurology (Child & Adolescent Psychiatry)

5841 S MARYLAND AVE # 3077
CHICAGO, IL 60637

Cook County (773) 702-0529

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 Margaret O'brien's NPI number?

The NPI number for Margaret O'brien is 1134700495. It was assigned to this individual provider in the NPPES registry on April 19, 2021.

Where is Margaret O'brien located?

Margaret O'brien practices at 5841 S Maryland Ave # 3077, Chicago, IL 60637. The listed phone number is (773) 834-0373.

What is Margaret O'brien's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Margaret O'brien enrolled in Medicare?

Yes. Margaret O'brien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Margaret O'brien affiliated with any hospitals?

According to CMS data, Margaret O'brien is affiliated with The University Of Chicago Medical Center and Ingalls Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Margaret O'brien was last updated on September 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.