Physician Profile
Unclaimed ProfileAbout SHOWEL
John Leo Showel, MD practices hematology/oncology in Chicago, IL. John is a 1965 graduate of University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb). John is also listed as specializing in specialist. According to Medicare claims data, John cared for 206 Medicare patients across 348 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
- (312) 942-5904
- Email not available
Practice Locations
1725 W HARRISON ST SUITE 855
Chicago, IL 60612
Procedures Most Often Billed to Medicare
348 services · 206 patients · 3 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
199 |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
115 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
34 |
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.
Related specialists at this location 2
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.
Other hematology/oncology specialists in Chicago 8
Same specialty, same city.
More connections — 11 related providers in 2 groups
Trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Other providers in the same specialty who trained at the same institution.
Class of 1965 at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 3
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Showel specialize in?
Dr. Showel is a hematology/oncology in Chicago, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “HEMATOLOGY/ONCOLOGY”.
NPI registry
Where is Dr. Showel located?
Dr. Showel is listed at 1725 W HARRISON ST SUITE 855, Chicago, IL 60612. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Showel's phone number?
The number on file is (312) 942-5904. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Showel's NPI number?
Dr. Showel's National Provider Identifier is 1689602146. 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
Where did Dr. Showel go to medical school?
Dr. Showel attended University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb), graduating in 1965. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Showel been practicing?
Dr. Showel has 61 years experience. Calculated from a graduation year of 1965, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Showel do most often?
According to Medicare billing data, Dr. Showel the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Showel confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Showel. 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.