Timothy Seijung Oh, MD
Hematology & Oncology Physician · Chicago, IL
Timothy Seijung Oh, MD is a hematology & oncology physician with a practice address in Chicago, Illinois, and NPI 1750840856, issued on Mar 18, 2019. Check the license (Illinois 036159429, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Timothy Seijung Oh
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 036159429 IL
Self-reported in NPPES; status is on the state search - Practice location
- 251 E Huron St, Chicago, IL 60611
- Phone
- (312) 926-2000
- Enumerated
- Mar 18, 2019
- Record last updated
- Jul 9, 2026
- Medicare enrollment
- Enrolled (PECOS I20260601002069); may accept Medicare assignment
- Medical or professional school
- Wake Forest University School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 666 in Illinois → Look up another NPI →
Also registered at 251 E Huron St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Allison AbbottCertified Registered Nurse Anesthetist1720446594
- Kathryn AbbottPsychiatry Physician1295537561
- Ramez Abdalla, M.B., B. CHNeuroradiology Physician1407410392
- Dena Abdelhameed, PHARM.D.Nuclear Pharmacist1073954301
Verify Timothy Seijung Oh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036159429Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $298.62
2 payments; by number, the most common kind was food and beverage; the largest payer was Celgene Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Timothy Seijung Oh among 666 hematology & oncology physician records in Illinois
Timothy Seijung Oh, MD is one of 666 hematology & oncology physician records with a practice address in Illinois. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 87% of them.
- NPI issued2019 · 87% of these records are older, 8% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2019 · median 2003 among the 461 with a school on file
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Illinois
There are 666 hematology & oncology physician records in Illinois.
All 666 in Illinois → Every provider in Chicago → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Elizabeth Eklund, MDChicago, IL 606111598861205
- Lisa Flaum, MDChicago, IL 606111740261262
- Leo Gordon, MDChicago, IL 606111821028499
- Jochen Lorch, M.D.Chicago, IL 606111518913094
- Daniela Matei, M.D.Chicago, IL 606111558327486
- Hidayatullah Munshi, MDChicago, IL 606111437258340
- Yu Oyama, MDChicago, IL 606111790715472
- Adam Petrich, MDChicago, IL 606111407899198
Common questions
What is Timothy Seijung Oh, MD's NPI number?
Timothy Seijung Oh, MD's National Provider Identifier (NPI) is 1750840856, issued on Mar 18, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Seijung Oh, MD located?
The NPPES record lists a practice address at 251 E Huron St, Chicago, IL, 60611. Phone: (312) 926-2000. Providers update this record themselves, so call before visiting.
How can I verify Timothy Seijung Oh, MD's license?
NPPES lists Illinois license number 036159429, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Timothy Seijung Oh, MD's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.