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DR. GREG S COHEN M.D.
NPI 1669447348
Internal Medicine - Gastroenterology in Chicago, IL

Active since February 17, 2006Opted out of Medicare · through Jan 1, 2027
13.83/100
CMS Quality Rating
676 N SAINT CLAIR ST, SUITE 1525, CHICAGO, IL 60611(312) 695-4452(312) 695-4453 Get Directions Write a Review

NPPES record last updated: January 18, 2011. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Greg S Cohen M.d. NPPES

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

DR. GREG S COHEN M.D. (NPI 1669447348) is an individual gastroenterology provider in Chicago, Illinois, licensed in Illinois (036104546) and active in the NPI registry since February 2006. He has opted out of Medicare through January 1, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1669447348
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. GREG S COHENCredential: M.D.
Location Address676 N SAINT CLAIR ST, SUITE 1525Chicago, IL 60611-2927
Mailing Address676 N Saint Clair St, Suite 1525Chicago, IL 60611-2927 · (312) 695-4452 · Fax (312) 695-4453
Phone(312) 695-4452
Fax(312) 695-4453
Sole ProprietorNo
Enumeration DateFebruary 17, 2006
Last NPPES UpdateJanuary 18, 2011
✔ NPI 1669447348 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in IL · 036104546
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
676 N SAINT CLAIR ST, Chicago, IL 60611
Open in Google Maps ↗

Other Identifiers 2

Medicaid036104546IL
Medicare UPINH64348

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Greg S Cohen M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2017 through January 1, 2027.

Opt-Out Effective DateJanuary 1, 2017
Opt-Out In Effect ThroughJanuary 1, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 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.

13.83/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality7.45
Improvement Activities20

Referred Medical Equipment & Supplies CMS DME claims 7

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

Ostomy skin barrier, powder, per oz A4371
DME-Orthotic Devices · category DF010N
2 suppliers12 claims22 services$3.20 avg. paid by Medicare
Ostomy skin barrier, solid 4 x 4 or equivalent, extended wear, without built-in convexity, each A4385
DME-Orthotic Devices · category DF010N
2 suppliers15 claims370 services$4.92 avg. paid by Medicare
Ostomy deodorant, with or without lubricant, for use in ostomy pouch, per fluid ounce A4394
DME-Orthotic Devices · category DF010N
1 supplier13 claims433 services$2.51 avg. paid by Medicare
Ostomy skin barrier, with flange (solid, flexible, or accordion), extended wear, with built-in convexity, 4 x 4 inches or smaller, each A4407
DME-Orthotic Devices · category DF010N
2 suppliers15 claims370 services$8.46 avg. paid by Medicare
Ostomy pouch, drainable; for use on barrier with non-locking flange, with filter (2 piece system), each A4425
DME-Orthotic Devices · category DF010N
2 suppliers15 claims420 services$3.33 avg. paid by Medicare
Adhesive remover, wipes, any type, each A4456
DME-Medical/Surgical Supplies · category DA000N
2 suppliers13 claims750 services$0.23 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.

MS. LISA RAUBOLT
Social Worker (Clinical)
676 N SAINT CLAIR ST
CHICAGO, IL 60611
Cook County (312) 926-4512
JULIANNA L ROTH MD
Internal Medicine
676 N SAINT CLAIR ST, SUITE 2300
CHICAGO, IL 60611
Cook County (312) 926-6000
ANKIT BHARAT MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
676 N SAINT CLAIR ST, SUITE 650
CHICAGO, IL 60611
Cook County (312) 926-7628
JOAQUIN CARLOS BRIEVA MD
Dermatology
676 N SAINT CLAIR ST, SUITE 1600
CHICAGO, IL 60611
Cook County (312) 695-8106
JOHN M SHAW MD
Internal Medicine (Medical Oncology)
676 N SAINT CLAIR ST, STE 2140
CHICAGO, IL 60611
Cook County (312) 664-5400
MELVIN J GOLDSTEIN, M.D.,S.C.
Internal Medicine (Gastroenterology)
676 N SAINT CLAIR ST, SUITE 1525
CHICAGO, IL 60611
Cook County (312) 337-1556
DR. HOWARD M. AROF M.D.
Obstetrics & Gynecology
676 N SAINT CLAIR ST, #1880
CHICAGO, IL 60611
Cook County (312) 642-9844
DR. MARIA MATSANGOU M.D.
Internal Medicine (Hematology & Oncology)
676 N SAINT CLAIR ST, SUITE 850
CHICAGO, IL 60611
Cook County (312) 695-6182

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 Greg Cohen's NPI number?

The NPI number for Greg Cohen is 1669447348. It was assigned to this individual provider in the NPPES registry on February 17, 2006.

Where is Greg Cohen located?

Greg Cohen practices at 676 N Saint Clair St Suite 1525, Chicago, IL 60611. The listed phone number is (312) 695-4452.

What is Greg Cohen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Greg Cohen enrolled in Medicare?

No. Greg Cohen has opted out of Medicare through January 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Greg Cohen was last updated on January 18, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.