DR. ROBERT S KATZ M.D.
NPI 1790875797
Internal Medicine - Rheumatology in Chicago, IL

Q: What is Robert Katz's NPI number?

The NPI number for Robert Katz is 1790875797. It was assigned to this individual provider in the NPPES registry on October 13, 2006.

Q: What is Robert Katz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Q: When was this NPI record last updated?

The NPPES record for Robert Katz was last updated on November 20, 2019. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since October 13, 2006PECOS EnrolledAccepts Medicare Assignment

5.69/100

CMS Quality Rating

1725 W HARRISON ST STE 365, CHICAGO, IL 60612(312) 226-8228(312) 226-5572 Get Directions Write a Review

NPPES record last updated: November 20, 2019. Verified against the NPPES registry weekly; last sync: July 26, 2026.

On this page

About Dr. Robert S Katz M.d. NPPES

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

DR. ROBERT S KATZ M.D. (NPI 1790875797) is an individual rheumatology provider in Chicago, Illinois, licensed in Illinois (036053574) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and is a graduate of Washington University School Of Medicine (1971).

NPPES Registry Identity

NPI1790875797

Entity TypeIndividualMale

Primary Taxonomy207RR0500X

Provider Legal NameDR. ROBERT S KATZCredential: M.D.

Location Address1725 W HARRISON ST STE 365Chicago, IL 60612-3836

Mailing Address1725 W Harrison St Ste 365Chicago, IL 60612-3836 · (312) 226-8228 · Fax (312) 226-5572

Phone(312) 226-8228

Fax(312) 226-5572

Sole ProprietorYes

Medical School CMSWashington University School Of MedicineGraduated 1971

Enumeration DateOctober 13, 2006

Last NPPES UpdateNovember 20, 2019

✔ NPI 1790875797 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

License✔ Licensed in IL · 036053574

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

1725 W HARRISON ST STE 365, Chicago, IL 60612

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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. Robert S Katz 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 ID1658421920

PECOS Enrollment IDI20090608000305

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 19

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

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) J0717

Certolizumab pegol is a medication injected under a doctor's supervision. It's used to treat certain inflammatory conditions like rheumatoid arthritis. The injection helps reduce symptoms like pain and swelling. Note that this drug isn't for self-administration.

50,800 services19 patients

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) J0129

Abatacept is a medication administered via injection under a doctor's supervision. It's used to treat conditions like rheumatoid arthritis by moderating the immune system. This code applies when the doctor administers the drug, not for self-administration.

6,525 services11 patients

Measurement of antibody for assessment of autoimmune disorder, any method 86235

This procedure measures the level of specific antibodies in your body to assess if you have an autoimmune disorder. Antibodies are proteins your immune system produces. In autoimmune disorders, these antibodies mistakenly attack your own cells. This test helps identify such conditions.

4,360 services262 patients

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.

811 services309 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

605 services269 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

577 services268 patients

Measurement of antibody for rheumatoid arthritis assessment 86200

This procedure measures the level of certain antibodies in your blood. These antibodies can be higher in people with rheumatoid arthritis, a condition causing joint inflammation. The test helps in diagnosing or monitoring the disease.

545 services262 patients

Measurement of dna antibody, single stranded 86226

The measurement of single-stranded DNA antibodies is a blood test. It is conducted to detect autoantibodies that might be present in your body, which can indicate certain autoimmune disorders. This test helps in diagnosing and monitoring these conditions.

545 services262 patients

Measurement of dna antibody, native or double stranded 86225

The measurement of DNA antibody, native or double stranded, is a blood test that helps detect autoimmune disorders, such as lupus. It identifies if your body is producing antibodies against its own DNA, which can indicate an overactive immune response.

544 services261 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

295 services29 patients

Injection, methylprednisolone acetate, 40 mg J1030

Methylprednisolone acetate is a medication given through an injection. It's a type of corticosteroid, which reduces inflammation and immune responses. It can be used to treat various conditions like arthritis, allergies, and skin diseases. This dose is 40 mg.

196 services51 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

192 services165 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

117 services15 patients

Manual urinalysis test with examination using microscope, non-automated 81000

A manual urinalysis test involves studying a urine sample under a microscope. This non-automated method helps identify any abnormal substances present. It's a useful tool for detecting potential health concerns early. The process is simple and non-invasive.

114 services84 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

68 services31 patients

Tuberculosis test, enumeration of t-cells 86481

A tuberculosis test checks if you've been exposed to TB, a lung disease. It's usually a skin test where a small amount of fluid is injected under your skin. Enumeration of T-cells is a blood test that counts your T-cells, crucial for immune response.

34 services34 patients

Aspiration and/or injection of fluid from small joint 20600

This procedure involves inserting a thin needle into a small joint to remove (aspirate) or inject fluid. It can help diagnose conditions, relieve discomfort, or administer medication directly into the joint. It's generally safe with minimal discomfort.

24 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.

21 services21 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.

13 services12 patients

Hospital Affiliations CMS Care Compare

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

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140281

Location251 E Huron StChicago, IL 60611 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 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

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

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.

5.69/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

Improvement Activities

Cost

18.98

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BEN J SMALL MD

Internal Medicine (Rheumatology)

1725 W HARRISON ST STE 365
CHICAGO, IL 60612

Cook County (312) 226-8228

ALEXANDRA SMALL M.D.

Internal Medicine (Rheumatology)

1725 W HARRISON ST STE 365
CHICAGO, IL 60612

Cook County (312) 226-8228

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Robert Katz's NPI number?

The NPI number for Robert Katz is 1790875797. It was assigned to this individual provider in the NPPES registry on October 13, 2006.

Where is Robert Katz located?

Robert Katz practices at 1725 W Harrison St Ste 365, Chicago, IL 60612. The listed phone number is (312) 226-8228.

What is Robert Katz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Robert Katz enrolled in Medicare?

Yes. Robert Katz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Robert Katz affiliated with any hospitals?

According to CMS data, Robert Katz is affiliated with Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Robert Katz was last updated on November 20, 2019. NPI Profile syncs with the weekly NPPES data releases published by CMS.