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DANIEL THOMAS O'BRIEN DO
NPI 1730678665
Emergency Medicine in Chicago, IL

Active since May 07, 2018PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
7435 W TALCOTT AVE, CHICAGO, IL 60631(773) 792-7921 Get Directions Write a Review

NPPES record last updated: April 25, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 25, 2022, Sep 28, 2021, May 22, 2018 and 1 more (4 updates tracked since 2018).

About Daniel Thomas O'brien Do NPPES

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

DANIEL THOMAS O'BRIEN DO (NPI 1730678665) is an individual emergency medicine provider in Chicago, Illinois, licensed in Illinois (036157306) and active in the NPI registry since May 2018. He is enrolled in Medicare PECOS, is affiliated with Community Hospital, and is a graduate of Kansas City University Of Med & Biosciences, College Of Osteo Med (2018).

NPPES Registry Identity

NPI1730678665
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDANIEL THOMAS O'BRIENCredential: DO
Location Address7435 W TALCOTT AVEChicago, IL 60631
Mailing Address7435 W Talcott AveChicago, IL 60631-3707
Phone(773) 792-7921
Sole ProprietorNo
Medical School CMSKansas City University Of Med & Biosciences, College Of Osteo MedGraduated 2018
Enumeration DateMay 7, 2018
Last NPPES UpdateApril 25, 20224 updates tracked since enumeration
NPPES CertifiedApril 25, 2022
✔ NPI 1730678665 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in IL · 036157306✔ Licensed in IL · 125-071881✔ Licensed in IN · 02006688A
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
7435 W TALCOTT AVE, Chicago, IL 60631
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Daniel Thomas O'brien Do 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 ID4587914650
PECOS Enrollment IDI20220427001977
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 Reassignments

4

Medicare enrollment records show Daniel O'brien reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cepamerica Illinois LLP
Same address
Emergency Medicine
7435 W TALCOTT AVE
Chicago, IL 60631
  • Reassigned Medicare billing, Illinois enrollment
  • 982 clinicians in this Medicare group
NPI 1518415751 (773) 774-8000
Cep America LLC
31 mi
Emergency Medicine
4321 FIR ST
East Chicago, IN 46312
  • Reassigned Medicare billing, Indiana enrollment
  • 598 clinicians in this Medicare group
NPI 1336805563 (219) 392-1700
Midwest Emergency Centralia Campus Associates, Inc
248 mi
Emergency Medicine
400 NORTH PLEASANT AVENUE
Centralia, IL 62801
  • Reassigned Medicare billing, Illinois enrollment
  • 69 clinicians in this Medicare group
NPI 1396034245 (817) 451-4208
Midwest Emergency Good Samaritan, Inc
259 mi
Emergency Medicine
605 N 12TH ST
Mount Vernon, IL 62864
  • Reassigned Medicare billing, Illinois enrollment
  • 81 clinicians in this Medicare group
NPI 1629367578 (817) 451-4208

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

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
521 services494 patients
Electrocardiogram (ecg) 1 to 3 leads with review by physician only 93042
An Electrocardiogram (ECG) is a non-invasive test that records the electrical activity of your heart. 1 to 3 leads or sensors are placed on your body to capture this data. A physician then reviews the results to evaluate your heart's health.
243 services235 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
102 services102 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
99 services98 patients
Critical care, each additional 30 minutes 99292
Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.
17 services12 patients

Hospital Affiliations CMS Care Compare

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

Community Hospital

Acute Care Hospitals · Munster, IN
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150125
Location901 Macarthur BlvdMunster, IN 46321 · Lake County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60631 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
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality100
Improvement Activities40
Cost94.69

Other Providers at the Same Location NPPES 20

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

MRS. MARISSA LYNN VARNER R.D, M.S.
Dietitian, Registered
7435 W TALCOTT AVE, HEALTH MANAGEMENT OFFICE
CHICAGO, IL 60631
Cook County (773) 594-7448
MICHAEL ANTHONY HOKS JR.
Emergency Medicine
7435 W TALCOTT AVE, RESURRECTION EM RESIDENCY
CHICAGO, IL 60631
Cook County (773) 792-7321
AKASH PATEL
Emergency Medicine
7435 W TALCOTT AVE
CHICAGO, IL 60631
Cook County (773) 792-7921
ALINA HUYNH NGUYEN DO
Emergency Medicine
7435 W TALCOTT AVE
CHICAGO, IL 60631
Cook County (773) 792-7921
DR. MOHAN PHATAK M.D.
Radiology (Pediatric Radiology)
7435 W TALCOTT AVE
CHICAGO, IL 60631
Cook County (773) 792-5138
DR. AUDREY KAY CAMERON AU.D.
Audiologist
7435 W TALCOTT AVE
CHICAGO, IL 60631
Cook County (773) 792-5258
JULIE JITENDRAKUMAR PATEL
Emergency Medicine
7435 W TALCOTT AVE
CHICAGO, IL 60631
Cook County (773) 990-7921
MARY RITA SABBAGH DO
Emergency Medicine
7435 W TALCOTT AVE
CHICAGO, IL 60631
Cook County (773) 990-5255

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 Daniel O'brien's NPI number?

The NPI number for Daniel O'brien is 1730678665. It was assigned to this individual provider in the NPPES registry on May 7, 2018.

Where is Daniel O'brien located?

Daniel O'brien practices at 7435 W Talcott Ave, Chicago, IL 60631. The listed phone number is (773) 792-7921.

What is Daniel O'brien's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Daniel O'brien enrolled in Medicare?

Yes. Daniel 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.

Which organizations bill Medicare for Daniel O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Daniel O'brien reassigns Medicare benefits to 4 organizations: Cepamerica Illinois LLP (Chicago, IL), Cep America LLC (East Chicago, IN), Midwest Emergency Centralia Campus Associates, Inc (Centralia, IL) and Midwest Emergency Good Samaritan, Inc (Mount Vernon, IL). Each 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 Daniel O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Daniel O'brien affiliated with any hospitals?

According to CMS data, Daniel O'brien is affiliated with Community Hospital.

When was this NPI record last updated?

The NPPES record for Daniel O'brien was last updated on April 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.