GRAZYNA JOANNA SIWY M.D.
NPI 1447498910
Internal Medicine in Chicago, IL

Active since January 22, 2009PECOS EnrolledAccepts Medicare Assignment
84.57/100
CMS Quality Rating
1901 W HARRISON ST, CHICAGO, IL 60612(312) 864-6000 Get Directions Write a Review

NPPES record last updated: April 30, 2021. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Grazyna Joanna Siwy M.d. NPPES

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

GRAZYNA JOANNA SIWY M.D. (NPI 1447498910) is an individual internal medicine provider in Chicago, Illinois, licensed in Illinois (036122386) and active in the NPI registry since January 2009. She is enrolled in Medicare PECOS, is affiliated with John H Stroger Jr Hospital, and is a graduate of Other (1998).

NPPES Registry Identity

NPI1447498910
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameGRAZYNA JOANNA SIWYCredential: M.D.
Location Address1901 W HARRISON STChicago, IL 60612-3714
Mailing Address8644 W Stolting RdNiles, IL 60714-1817 · (847) 692-2377
Sole ProprietorYes
Medical School CMSOtherGraduated 1998
Enumeration DateJanuary 22, 2009
Last NPPES UpdateApril 30, 2021
NPPES CertifiedApril 30, 2021
NPI 1447498910 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in IL · 036122386
Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1901 W HARRISON ST, Chicago, IL 60612

Accepted Insurance

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

Grazyna Joanna Siwy 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 ID9032390828
PECOS Enrollment IDI20110228000336
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 3

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 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.
178 services70 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 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.
21 services19 patients
Anticoagulant management of patient taking warfarin 93793
Anticoagulant management with warfarin involves monitoring and adjusting your medication to prevent blood clots while minimizing the risk of bleeding. Regular blood tests measure your response to warfarin, helping adjust your dose if necessary. It's crucial to maintain a consistent diet and promptly report any changes in your health.
19 services13 patients

Hospital Affiliations CMS Care Compare

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

John H Stroger Jr Hospital

Acute Care Hospitals · Chicago, IL
2/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number140124
Location1901 W Harrison StChicago, IL 60612 · 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.

84.57/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality60.25
Promoting Interoperability100
Improvement Activities40
Cost67

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
4 suppliers13 claims36 services$6.49 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

Nurse Practitioner (Adult Health)
1901 W HARRISON ST, 2ND FLOOR, GENERAL MEDICINE CLINIC
CHICAGO, IL 60612
Pediatrics (Pediatric Emergency Medicine)
1901 W HARRISON ST, JOHN H. STROGER JR. HOSPITAL, DEPARTMENT OF PEDIATRICS
CHICAGO, IL 60612
Internal Medicine (Geriatric Medicine)
1901 W HARRISON ST
CHICAGO, IL 60612
Nurse Practitioner (Adult Health)
1901 W HARRISON ST
CHICAGO, IL 60612
Pediatrics
1901 W HARRISON ST
CHICAGO, IL 60612
Internal Medicine
1901 W HARRISON ST, JOHN H. STROGER JR. HOSPITAL OF COOK COUNTY
CHICAGO, IL 60612
Radiology (Diagnostic Radiology)
1901 W HARRISON ST, RM 2533
CHICAGO, IL 60612
Podiatrist
1901 W HARRISON ST
CHICAGO, IL 60612

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 Grazyna Siwy's NPI number?

The NPI number for Grazyna Siwy is 1447498910. It was assigned to this individual provider in the NPPES registry on January 22, 2009.

Where is Grazyna Siwy located?

Grazyna Siwy practices at 1901 W Harrison St, Chicago, IL 60612. The listed phone number is (312) 864-6000.

What is Grazyna Siwy's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Grazyna Siwy enrolled in Medicare?

Yes. Grazyna Siwy 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.

What insurance does Grazyna Siwy accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Grazyna Siwy as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Grazyna Siwy affiliated with any hospitals?

According to CMS data, Grazyna Siwy is affiliated with John H Stroger Jr Hospital.

When was this NPI record last updated?

The NPPES record for Grazyna Siwy was last updated on April 30, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.