Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Gregory E Brisson , MD

Internal Medicine • Chicago, IL

Active NPI 1891740627 Individual Practitioner Male Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

201 E Huron St, 12th Floor, Suite 105
Chicago, IL 606113197

Call 3129266146 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

201 E Huron St
12th Floor, Suite 105

Chicago, IL 606113197

Telephone 3129266146
Organization at the Same NPPES Address or Phone
Edward J. Olinger, M.d., S.c. Facility NPI 1558346890

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Northwestern Medical Faculty Foundation. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Wayne State University School Of Medicine

Graduation Year

1991

Medicare patients

102 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $45,313 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $36,688 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

30-day fills

3,041 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$95,726 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $38.09 in 2023

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2023.

Guide: How to read an Open Payments record

Years since graduation

35 years (graduated 1991)

CMS Doctors and Clinicians data list 1991 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Brisson has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Brisson as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Chicago and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Close to the middle for clinicians listed under Internal Medicine in Chicago, IL (2024, 1,008 clinicians with data). Median for this group: 406. Middle half: 157 to 820.

Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: 699. Middle half: 285 to 1,340.

Medicare-allowed amount

Close to the middle for clinicians listed under Internal Medicine in Chicago, IL (2024, 1,008 clinicians with data). Median for this group: $41,573. Middle half: $14,662 to $79,189.

A lower Medicare-allowed amount than 60% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: $67,802. Middle half: $27,619 to $124,679.

Paid by Medicare

Close to the middle for clinicians listed under Internal Medicine in Chicago, IL (2024, 1,008 clinicians with data). Median for this group: $31,519. Middle half: $10,954 to $62,185.

A lower Medicare payment amount than 60% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: $52,838. Middle half: $21,117 to $98,214.

Medicare Part D prescriptions

More Part D prescriptions than 60% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,269 clinicians with data). Median for this group: 474. Middle half: 74 to 2,358.

Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: 1,030. Middle half: 99 to 4,658.

Part D drug cost

A higher Part D drug cost than 60% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,269 clinicians with data). Median for this group: $40,678. Middle half: $1,543 to $232,098.

Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: $78,716. Middle half: $2,604 to $371,507.

2,870 active clinicians are listed under Internal Medicine with a practice address in Chicago, IL (7,245 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Chicago

13.3% of these 2,870 clinicians have the CMS telehealth indicator.

38.5% of these 2,870 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2023
Disclosure Year:

Program year 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $38.09.

Manufacturer Payment Nature Product Type Amount ($)
ABIOMED
Food and Beverage
In-kind items and services
Impella General $38.09

Source: CMS Open Payments, program year 2023, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample
80 63 $20.00 $8.65
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
76 76 $373.00 $138.80
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
67 54 $434.00 $192.51
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
65 53 $323.00 $136.42
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
51 42 $88.00 $17.45
99443 Telephone medical discussion with physician, 21-30 minutes
39 29 $250.00 $136.25
99442 Telephone medical discussion with physician, 11-20 minutes
33 22 $175.00 $95.71
90480 Admn sarscov2 vacc 1 dose
16 15 $88.00 $44.94
91320 Sarscv2 vac 30mcg trs-suc im
16 15 $201.81 $139.11

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 185 16,036 $2,067.52 51
Amlodipine Besylate Amlodipine Besylate 87 7,830 $874.81 24
Losartan Potassium Losartan Potassium 77 6,900 $1,131.66 21
Tamsulosin Hcl Tamsulosin Hcl 76 4,779 $1,466.86 16
Rosuvastatin Calcium Rosuvastatin Calcium 71 6,150 $1,175.67 18
Simvastatin Simvastatin 66 3,951 $877.66 13
Omeprazole Omeprazole 66 3,191 $632.77 11
Hydrochlorothiazide Hydrochlorothiazide 50 4,440 $247.80 14
Levothyroxine Sodium Levothyroxine Sodium 44 2,957 $494.43 —
Zolpidem Tartrate Zolpidem Tartrate 35 653 $123.46 —
Lisinopril Lisinopril 34 2,760 $252.84 11
Metformin Hcl Metformin Hcl 33 2,285 $417.36 —
Atenolol Atenolol 31 2,550 $310.34 —
Lorazepam Lorazepam 31 502 $228.13 —
Metoprolol Succinate Metoprolol Succinate 29 2,545 $580.93 —
Metformin Hcl Er Metformin Hcl 29 2,430 $304.86 —
Allopurinol Allopurinol 28 2,430 $421.76 —
Zenpep Lipase/Protease/Amylase 26 364 $9,397.40 —
Escitalopram Oxalate Escitalopram Oxalate 24 2,096 $321.81 —
Ramipril Ramipril 23 1,890 $182.87 —
Gabapentin Gabapentin 21 890 $321.94 —
Carvedilol Carvedilol 18 1,290 $8.53 —
Benazepril Hcl Benazepril Hcl 17 1,445 $480.96 —
Enalapril Maleate Enalapril Maleate 14 1,260 $52.60 —
Chlorthalidone Chlorthalidone 13 1,170 $354.70 —

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20060322000288

Enrollment State Jurisdiction

IL

PECOS Control ID

3173531886

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Northwestern Medical Faculty Foundation

675 N Saint Clair St, Chicago, IL 606115975

Northwestern Medical Faculty Foundation

4445 W Irving Park Rd, Chicago, IL 606412808

Northwestern Medical Faculty Foundation

1333 W Belmont Ave, Chicago, IL 606575785

Northwestern Medical Faculty Foundation

675 N St Clair, Chicago, IL 606115975

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

8 listed
Dr. Kimbra Bell , MD

Internal Medicine

NPI 1154373876

Doctor of Medicine (M.D.)

Brenda Fritz , PHYSICIAN ASSISTANT

Physician Assistant - Medical

NPI 1265535678

PHYSICIANASSISTANT

Dr. John Glynn , DO

Internal Medicine

NPI 1407895121

Doctor of Osteopathic Medicine (D.O.)

Dr. Samuel Granieri , MD

Internal Medicine

NPI 1154360873

Doctor of Medicine (M.D.)

Dr. Gary Gruber , MD

Internal Medicine

NPI 1487693610

Doctor of Medicine (M.D.)

Dr. Jason Primer , MD

Internal Medicine

NPI 1487693628

Doctor of Medicine (M.D.)

Career & Practice History

NPI enumerated May 23, 2006.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1891740627
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 23, 2006
Last Update: July 13, 2026
Sole Proprietor: No

Other Internal Medicine Providers in Chicago

All Internal Medicine Providers in Chicago

Mailing Address

201 E Huron St, 12th Floor, Suite 105

Chicago, IL 606113197

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.