Dr. Chandra Hassan , MD
Surgery โข Chicago, IL
1801 W Taylor St Ste 3f
Chicago, IL 606124795
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on April 28, 2008; this date does not establish years in practice.
-
Published CMS data list 12 Original Medicare Part B services in 2023.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023. Published rows only; this is not a quality measure.
-
Published Part B service records, 2023:
- 43775 โ Partial removal of stomach for weight loss using an endoscope: 12 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2022 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2023). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
-
Published CMS data list 15 Medicare Part D prescriptions, including refills, in 2016.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2016. Published rows only; this is not a quality measure.
-
Published Part D records, 2016:
- Omeprazole โ 15 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2016. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
-
Medicare Part B services went from 30 in 2019 to 12 in 2023.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2019โ2023.
Practice Location & Contact Primary Location
1801 W Taylor St Ste 3f
Chicago, IL 606124795
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Chicago, IL; Cleveland, OH. 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
1992
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $15,290 in 2023
The total amount Medicare approved for these services in 2023. 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 โ by Provider and Service, 2023.
Paid by Medicare
About $12,175 in 2023
The part of the Medicare-allowed amount that Medicare itself paid in 2023, 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 โ by Provider and Service, 2023.
30-day fills
29 standardized 30-day fills in 2016
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
$303 in 2016
The total cost of these prescriptions in 2016, 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 โ by Provider and Drug, 2016.
Open Payments general payments, program year 2025
All general payments: $1,802.67 across 11 records.
By nature of payment
- Travel and Lodging: $1,383.78 across 5 records.
- Food and Beverage: $418.89 across 6 records.
Reporting-company totals
- Stryker Corporation: $1,673.44 across 9 records.
- Teleflex LLC: $123.23 across 1 record.
- INTUITIVE SURGICAL, INC.: $6.00 across 1 record.
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
34 years (graduated 1992)
CMS Doctors and Clinicians data list 1992 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
2008
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, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Hassan 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 Dr. Hassan 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
Comparisons use 2024 data. The latest CMS data for Dr. Hassan are from 2023.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Hassan are from 2016.
549 active clinicians are listed under Surgery with a practice address in Chicago, IL (1,523 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
5.1% of these 549 clinicians have the CMS telehealth indicator.
28.4% of these 549 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.
-
Medicare Part B services
Medicare Part B services decreased 60% from 30 in 2019 to 12 in 2023.
- 2019: 30
- 2020: 26
- 2021: 46
- 2022: 33
- 2023: 12
-
Medicare-allowed amount
Medicare-allowed amount increased 18% from $12,944 in 2019 to $15,290 in 2023.
- 2019: $12,944
- 2020: $2,865
- 2021: $6,214
- 2022: $4,134
- 2023: $15,290
-
Paid by Medicare
Paid by Medicare increased 20% from $10,127 in 2019 to $12,175 in 2023.
- 2019: $10,127
- 2020: $1,962
- 2021: $4,441
- 2022: $2,953
- 2023: $12,175
-
Medicare Part D prescriptions
Medicare Part D prescriptions decreased 84% from 95 in 2013 to 15 in 2016.
- 2013: 95
- 2014: 225
- 2015: 147
- 2016: 15
-
30-day fills
30-day fills decreased 73% from 109 in 2013 to 29 in 2016.
- 2013: 109
- 2014: 254
- 2015: 178
- 2016: 29
-
Part D drug cost
Part D drug cost decreased 97% from $8,942 in 2013 to $303 in 2016.
- 2013: $8,942
- 2014: $16,474
- 2015: $1,953
- 2016: $303
-
Industry payments (Open Payments)
Industry payments (Open Payments) decreased 87% from $13,740.55 in 2021 to $1,802.67 in 2025.
- 2021: $13,740.55
- 2022: $44,466.86
- 2023: $35,484.06
- 2024: $310.01
- 2025: $1,802.67
Sources: CMS Medicare Physician & Other Practitioners (2023), CMS Medicare Part D Prescribers (2016), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 โ December 31, 2025): 11 records totaling $1,802.67.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Stryker Corporation |
Travel and Lodging
Cash or cash equivalent
|
1788 | General | $990.31 |
| Stryker Corporation |
Travel and Lodging
Cash or cash equivalent
|
1788 | General | $332.12 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
1788 | General | $154.56 |
| Teleflex LLC |
Food and Beverage
In-kind items and services
|
TITAN SGS BAILOUT CHUCK | General | $123.23 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
1788 | General | $70.39 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
1788 | General | $46.26 |
| Stryker Corporation |
Travel and Lodging
Cash or cash equivalent
|
1788 | General | $28.49 |
| Stryker Corporation |
Travel and Lodging
Cash or cash equivalent
|
1788 | General | $26.86 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
1788 | General | $18.21 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
1788 | General | $6.24 |
| INTUITIVE SURGICAL, INC. |
Travel and Lodging
In-kind items and services
|
Da Vinci Surgical System | General | $6.00 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2022 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 โ by Provider and Service data, 2017โ2023; 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 |
|---|---|---|---|---|
|
43775
Partial removal of stomach for weight loss using an endoscope
|
12 | 12 | $6544.08 | $1274.19 |
Source: CMS Part B by Provider and Service, 2023; 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 2016.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Omeprazole | Omeprazole | 15 | 870 | $302.71 | โ |
Source: CMS Part D by Provider and Drug, 2016; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL SURGERY
I20160414001591
IL
8820144223
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
2322 E 22nd St, Suite 207
Cleveland, OH 441153176
Phone: 2163632578
2875 W 19th St
Chicago, IL 606233501
Phone: 7734844425
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Surgery (license number reported to NPPES: PA MD432412)
NPI status registered as active in NPPES database
Registered at 1801 W TAYLOR ST STE 3F, CHICAGO, IL 606124795 (Tel: (312) 355-1493)
Registered at 1801 W TAYLOR ST STE 3F, CHICAGO, IL 606124795 (Tel: (312) 355-1493)
Recorded as CHANDRA HASSAN, M.D.,
Surgery (license number reported to NPPES: PA MD432412)
NPI status registered as active in NPPES database
Registered at 2322 E 22ND ST, SUITE 207, CLEVELAND, OH 441153176 (Tel: 2163632578)
Registered at PO BOX 932127, CLEVELAND, OH 441930008 (Tel: 2164722741)
Recorded as CHANDRA HASSAN, M.D.,
Surgery (license number reported to NPPES: OH 35.093595)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Chicago
- Dr. Shahid Ansari, MD
- Dr. Dominic Vitello, MD
- Mckenna Chalman
- Dr. Theodoros Michelakos, MD
- Dr. Francesco Bianco, MD
- John Alverdy
Mailing Address
1801 W Taylor St Ste 3f
Chicago, IL 606124795
Phone: 3123551493