DR. THOMAS H OH M.D.
NPI 1033275276
Emergency Medicine in Naperville, IL

Active since December 30, 2006PECOS EnrolledAccepts Medicare Assignment
95.01/100
CMS Quality Rating
801 S WASHINGTON ST, EMERGENCY MEDICINE, NAPERVILLE, IL 60540(630) 527-3000 Get Directions Write a Review

NPPES record last updated: December 1, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Thomas H Oh M.d. NPPES

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

DR. THOMAS H OH M.D. (NPI 1033275276) is an individual emergency medicine provider in Naperville, Illinois, licensed in Illinois (036-106421) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Edward Hospital, and is a graduate of Loma Linda University School Of Medicine (1999).

NPPES Registry Identity

NPI1033275276
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. THOMAS H OHCredential: M.D.
Location Address801 S WASHINGTON ST, EMERGENCY MEDICINENaperville, IL 60540-7430
Mailing Address2650 Ridge Ave., 1223Evanston, IL 60201-1718 · (847) 570-2040
Sole ProprietorNo
Medical School CMSLoma Linda University School Of MedicineGraduated 1999
Enumeration DateDecember 30, 2006
Last NPPES UpdateDecember 1, 2025
NPPES CertifiedDecember 1, 2025
NPI 1033275276 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License Licensed in IL · 036-106421
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.

801 S WASHINGTON ST, Naperville, IL 60540

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

Dr. Thomas H Oh M.d. 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 ID5890718928
PECOS Enrollment IDI20060104000489, I20060124000651
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.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit, 20-29 minutes 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
78 services77 patients
Established patient office or other outpatient visit, 30-39 minutes 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
40 services40 patients
Emergency department visit for problem of high severity 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.
19 services19 patients
New patient office or other outpatient visit, 30-44 minutes 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
17 services17 patients
New patient office or other outpatient visit, 45-59 minutes 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
16 services16 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
12 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Edward Hospital

Acute Care Hospitals · Naperville, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140231
Location801 South WashingtonNaperville, IL 60540 · Du Page County
Emergency services Birthing friendly

Midwest Medical Center

Critical Access Hospitals · Galena, IL
OwnershipVoluntary non-profit - Private
CMS Certification Number141302
Location1 Medical Center DriveGalena, IL 61036 · Jo Daviess County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60540 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
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
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.

95.01/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality80.02
Promoting Interoperability100
Improvement Activities40

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.

Hospitalist
801 S WASHINGTON ST, 3RD FLOOR
NAPERVILLE, IL 60540
Radiology (Diagnostic Radiology)
801 S WASHINGTON ST
NAPERVILLE, IL 60540
Surgery (Vascular Surgery)
801 S WASHINGTON ST
NAPERVILLE, IL 60540
Radiology (Diagnostic Radiology)
801 S WASHINGTON ST
NAPERVILLE, IL 60540
Radiology (Diagnostic Radiology)
801 S WASHINGTON ST
NAPERVILLE, IL 60540
Radiology (Diagnostic Radiology)
801 S WASHINGTON ST
NAPERVILLE, IL 60540
Radiology (Diagnostic Radiology)
801 S WASHINGTON ST
NAPERVILLE, IL 60540
Radiology (Diagnostic Radiology)
801 S WASHINGTON ST
NAPERVILLE, IL 60540

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1033275276, enumerated as an "individual" on December 30, 2006.

The provider is located at 801 S WASHINGTON ST EMERGENCY MEDICINE NAPERVILLE, IL 60540 and the phone number is (630) 527-3000.

Emergency Medicine with taxonomy code 207P00000X.

Thomas Oh is affiliated with: EDWARD HOSPITAL and MIDWEST MEDICAL CENTER.