Physician Profile
Unclaimed ProfileAbout KATZ
Robert S Katz, M.D. practices rheumatology in Chicago, IL. Robert is a 1971 graduate of Washington University School of Medicine. Medicare claims data shows Robert provided 90,366 services to 2,271 patients.
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) 226-8228
- Email not available
Practice Locations
1725 W HARRISON ST STE 365
Chicago, IL 60612
Procedures Most Often Billed to Medicare
90,366 services · 2,271 patients · 18 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
727 |
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
46 |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
326 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
198 |
| Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) | Drug given | J0717 |
64,800 |
| Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) | Drug given | J0129 |
10,850 |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
4,244 |
| Injection, methylprednisolone acetate, 40 mg | Drug given | J1030 |
38 |
| Measurement of antibody for assessment of autoimmune disorder, any method | Lab test | 86235 |
5,528 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
745 |
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.
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 rheumatology specialists in Chicago 8
Same specialty, same city.
Trained at Washington University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 14 related providers in 2 groups
Class of 1971 at Washington University School of Medicine 6
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is Dr. Katz's specialty?
Dr. Katz is a rheumatology in Chicago, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RHEUMATOLOGY”.
NPI registry
Where can I find Dr. Katz?
Dr. Katz is listed at 1725 W HARRISON ST STE 365, Chicago, IL 60612. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Katz?
The number on file is (312) 226-8228. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Katz?
Dr. Katz's National Provider Identifier is 1790875797. 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. Katz's medical education?
Dr. Katz attended Washington University School of Medicine, graduating in 1971. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Katz have?
Dr. Katz has 55 years experience. Calculated from a graduation year of 1971, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Katz known for?
According to Medicare billing data, Dr. Katz performs procedures including insertion of needle into vein for collection of blood sample and aspiration and/or injection of fluid from large joint; provides treatments such as administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle and infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Katz's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Katz. 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.