Physician Profile
Unclaimed ProfileAbout OH
Based in Naperville, IL, Thomas H Oh, M.D. is listed in the NPI registry under emergency medicine. Thomas graduated from Loma Linda University School of Medicine in 1999. According to Medicare claims data, Thomas cared for 435 Medicare patients across 445 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (630) 527-3000
- Email not available
Practice Locations
801 S WASHINGTON ST EMERGENCY MEDICINE
Naperville, IL 60540
Procedures Most Often Billed to Medicare
445 services · 435 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
28 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
22 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
136 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
133 |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
44 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
32 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
27 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
23 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other emergency medicines at this location 6
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 27 related providers in 4 groups
Other emergency medicines in Naperville 3
Same specialty, same city.
Trained at Loma Linda University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1999 at Loma Linda University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is Dr. Oh's specialty?
Dr. Oh is an emergency medicine in Naperville, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
Where can I find Dr. Oh?
Dr. Oh is listed at 801 S WASHINGTON ST EMERGENCY MEDICINE, Naperville, IL 60540. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Oh?
The number on file is (630) 527-3000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Oh's NPI number?
Dr. Oh's National Provider Identifier is 1033275276. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Oh's medical education?
Dr. Oh attended Loma Linda University School of Medicine, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Oh been practicing?
Dr. Oh has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Oh known for?
According to Medicare billing data, Dr. Oh provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Oh confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Oh. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.