Gerald Gantt
Colon & Rectal Surgery • Chicago, IL
840 S Wood St Ste 518e
Chicago, IL 60612
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Gerald Gantt is listed in NPPES under Colon & Rectal Surgery.
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NPI assigned on May 17, 2010; this date does not establish years in practice.
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Published CMS data list 32 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 — Established patient outpatient office visit: 17 service units.
- 99212 — Established patient outpatient office visit: 15 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 47 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) — 21 prescription fills, including refills.
- Metronidazole — 14 prescription fills, including refills.
- Oxycodone Hcl — 12 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 90% of clinicians listed under Colon & Rectal Surgery in Chicago, IL (2024, 22 clinicians with data). Median for this group: 134. Middle half: 67 to 240.
Fewer Medicare Part B services than 95% of clinicians listed under Colon & Rectal Surgery in Illinois (2024, 65 clinicians with data). Median for this group: 241. Middle half: 127 to 359.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 66 in 2019 to 32 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019–2024.
Practice Location & Contact Primary Location
840 S Wood St Ste 518e
Chicago, IL 60612
NPPES lists 1 additional practice-address record in Farmington, CT. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: The Board Of Trustees Of The University Of Illinois. 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
University Of Maryland School Of Medicine
2010
What Public CMS Data Show
Colon & Rectal Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
63 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $1,691 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.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
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 $1,313 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
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
47 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
$425 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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.
Open Payments general payments, program year 2025
All general payments: $1,460.33 across 11 records.
By nature of payment
- Food and Beverage: $1,107.36 across 10 records.
- Travel and Lodging: $352.97 across 1 record.
Reporting-company totals (3 largest of 9)
- THD America, Inc.: $352.97 across 1 record.
- Acera Surgical, Inc.: $322.71 across 2 records.
- Davol Inc.: $204.02 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
16 years (graduated 2010)
CMS Doctors and Clinicians data list 2010 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished 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
2010
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.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
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.
Enrolled in Medicare (PECOS)
Gerald Gantt 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.
Can order Medicare-covered services
CMS lists Gerald Gantt 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
Compared with the same specialty in Chicago and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Colon & Rectal Surgery in Chicago, IL (2024, 22 clinicians with data). Median for this group: 134. Middle half: 67 to 240.
Fewer Medicare Part B services than 95% of clinicians listed under Colon & Rectal Surgery in Illinois (2024, 65 clinicians with data). Median for this group: 241. Middle half: 127 to 359.
Medicare-allowed amount
A lower Medicare-allowed amount than 95% of clinicians listed under Colon & Rectal Surgery in Chicago, IL (2024, 22 clinicians with data). Median for this group: $14,312. Middle half: $5,702 to $28,071.
A lower Medicare-allowed amount than 95% of clinicians listed under Colon & Rectal Surgery in Illinois (2024, 65 clinicians with data). Median for this group: $26,009. Middle half: $13,162 to $45,581.
Paid by Medicare
A lower Medicare payment amount than 95% of clinicians listed under Colon & Rectal Surgery in Chicago, IL (2024, 22 clinicians with data). Median for this group: $10,982. Middle half: $4,093 to $21,456.
A lower Medicare payment amount than 95% of clinicians listed under Colon & Rectal Surgery in Illinois (2024, 65 clinicians with data). Median for this group: $20,342. Middle half: $10,079 to $35,541.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Colon & Rectal Surgery in Chicago, IL (2024, 24 clinicians with data). Median for this group: 51. Middle half: 32 to 137.
Fewer Part D prescriptions than 70% of clinicians listed under Colon & Rectal Surgery in Illinois (2024, 66 clinicians with data). Median for this group: 111. Middle half: 38 to 160.
Part D drug cost
A lower Part D drug cost than 60% of clinicians listed under Colon & Rectal Surgery in Chicago, IL (2024, 24 clinicians with data). Median for this group: $665. Middle half: $139 to $2,084.
A lower Part D drug cost than 75% of clinicians listed under Colon & Rectal Surgery in Illinois (2024, 66 clinicians with data). Median for this group: $1,200. Middle half: $431 to $3,556.
44 active clinicians are listed under Colon & Rectal Surgery with a practice address in Chicago, IL (97 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
22.7% of these 44 clinicians have the CMS telehealth indicator.
63.6% of these 44 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 52% from 66 in 2019 to 32 in 2024.
- 2019: 66
- 2020: 23
- 2021: 16
- 2023: 42
- 2024: 32
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Medicare-allowed amount
Medicare-allowed amount decreased 55% from $3,791 in 2019 to $1,691 in 2024.
- 2019: $3,791
- 2020: $1,234
- 2021: $1,161
- 2023: $6,218
- 2024: $1,691
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Paid by Medicare
Paid by Medicare decreased 57% from $3,021 in 2019 to $1,313 in 2024.
- 2019: $3,021
- 2020: $900
- 2021: $871
- 2023: $5,015
- 2024: $1,313
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 12 in 2015 to 47 in 2024.
- 2015: 12
- 2019: 46
- 2021: 18
- 2023: 14
- 2024: 47
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30-day fills
30-day fills went from 12 in 2015 to 47 in 2024.
- 2015: 12
- 2019: 46
- 2021: 18
- 2023: 14
- 2024: 47
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Part D drug cost
Part D drug cost went from $176 in 2015 to $425 in 2024.
- 2015: $176
- 2019: $408
- 2021: $253
- 2023: $261
- 2024: $425
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Industry payments (Open Payments)
Industry payments (Open Payments) increased 26% from $1,163.55 in 2021 to $1,460.33 in 2025.
- 2021: $1,163.55
- 2022: $769.65
- 2023: $490.88
- 2024: $10,975.86
- 2025: $1,460.33
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), 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
Program year 2025 (payments made January 1 – December 31, 2025): 11 records totaling $1,460.33.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| THD America, Inc. |
Travel and Lodging
In-kind items and services
|
— | General | $352.97 |
| Acera Surgical, Inc. |
Food and Beverage
In-kind items and services
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Restrata Wound Matrix | General | $172.73 |
| Acera Surgical, Inc. |
Food and Beverage
In-kind items and services
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Restrata Wound Matrix | General | $149.98 |
| Davol Inc. |
Food and Beverage
In-kind items and services
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ARISTA | General | $125.07 |
| MIMEDX Group, Inc. |
Food and Beverage
In-kind items and services
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— | General | $112.03 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
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LIGASURE | General | $110.62 |
| Ethicon Inc. |
Food and Beverage
In-kind items and services
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Echelon Circular | General | $108.48 |
| Baxter Healthcare |
Food and Beverage
In-kind items and services
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PERCLOT | General | $100.00 |
| Solventum Corporation |
Food and Beverage
Cash or cash equivalent
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PREVENA | General | $85.70 |
| Davol Inc. |
Food and Beverage
In-kind items and services
|
Phasix Mesh | General | $78.95 |
| Aroa Biosurgery Incorporated |
Food and Beverage
Cash or cash equivalent
|
— | General | $63.80 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018–2023 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, 2019–2024; 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 |
|---|---|---|---|---|
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
17 | 16 | $370.82 | $66.86 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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15 | 13 | $203.27 | $36.93 |
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.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Gavilyte-G | Peg3350/Sod Sulf,bicarb,cl/Kcl | 21 | 25 | $320.40 | 18 |
| Metronidazole | Metronidazole | 14 | 40 | $31.43 | 13 |
| Oxycodone Hcl | Oxycodone Hcl | 12 | 83 | $73.17 | — |
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
NUCC Taxonomy Code: 208C00000X
A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - COLORECTAL SURGERY (PROCTOLOGY)
I20181010003862
IL
5890923411
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
The Board Of Trustees Of The University Of Illinois
840 S Wood St Mc, Chicago, IL 606124325
Phone: 3123550104
Secondary Practice Locations
263 Farmington Ave
Farmington, CT 060300001
Phone: 8606792000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Colon & Rectal Surgery
Doctor of Medicine (M.D.)
Surgery
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 840 S WOOD ST STE 518E, CHICAGO, IL 60612 (Tel: 3129962061)
Registered at 840 S WOOD ST STE 518E, CHICAGO, IL 606124325
Colon & Rectal Surgery (license number reported to NPPES: IL 036143979)
NPI status registered as active in NPPES database
Registered at 263 FARMINGTON AVE, FARMINGTON, CT 060300001 (Tel: 8606792000)
Registered at 263 FARMINGTON AVE, FARMINGTON, CT 060300001
Recorded as GERALD GANTT
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Colon & Rectal Surgery Specialists in Chicago
- Dr. Vivek Chaudhry, MD
- Dr. Anders Mellgren, MD
- Dr. Brendan O'donnell, MD
- Dr. Virginia Shaffer, MD
- Dr. Mohammad Ali Abbass, MD
- Dr. John Konen, MD
Mailing Address
840 S Wood St Ste 518e
Chicago, IL 606124325