Dr. Thomas Adam Messer, MD
- Medicare services, 2024
- 37
- Medicare patients, 2024
- 36
- MIPS score, 2024
- 95
- Hospital affiliations
- 1
- Industry payments
- $846
- Practice address
- 1901 W Harrison St, Chicago, IL 60612
- Practice phone
- Call (312) 864-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Messer's professional email, personal email and mobile number
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Dr. Thomas Adam Messer is a general surgeon in Chicago, Illinois
Dr. Messer practices at John H. Stroger, Jr. Hospital of Cook County in Chicago, Illinois, part of Cook County Government.
Dr. Messer's NPI, 1205085255, was assigned on September 15, 2008. Dr. Messer graduated from Rush Medical College of Rush University in 2002. Dr. Messer holds Illinois license 036-116125.
- NPI
- 1205085255NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365622859
- NPI enumeration date
- September 15, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 864-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Adam Messer practices at John H. Stroger, Jr. Hospital of Cook County in Chicago, Illinois
Dr. Messer's primary practice is John H. Stroger, Jr. Hospital of Cook County, at 1901 W Harrison St, Chicago, IL 60612 in Cook County. The practice phone is (312) 864-6000.
- John H. Stroger, Jr. Hospital of Cook County1901 W Harrison St, Chicago, IL 60612 · Cook CountyPhone(312) 864-6000
Source: Dmand AI Affiliation Data
Dr. Thomas Adam Messer is affiliated with 1 site of care and 1 medical group
Dr. Messer's primary practice is John H. Stroger, Jr. Hospital of Cook County in Chicago, Illinois, part of Cook County Government. The medical group on file is John H. Stroger, Jr. Hospital of Cook County.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas Adam Messer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Messer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John H. Stroger, Jr. Hospital of Cook County | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Adam Messer is one of 1,217 general surgeons in Illinois
Surgery is Dr. Messer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Messer is licensed in Illinois.
Specialties and state licenses
- Surgery, IllinoisPrimary
General surgeons near Dr. Messer
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Thomas Adam Messer billed Medicare for 37 services in 2024
CMS data shows 37 Medicare services from Dr. Messer across 1 procedure code in 2024, for 36 Medicare patients. Medicare paid $2,423 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Messer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 272024: 3737%
Dr. Messer compared with the Illinois median for general surgeons, 2024
- Dr. Messer
- Illinois median
- Medicare services
- 37vs 19481% below
- Medicare patients
- 36vs 14475% below
Medians across 1,031 general surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Messer's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Adam Messer treated 36 Medicare patients in 2024, average age 74
CMS counts 36 Medicare patients who saw Dr. Messer in 2024. The largest group is 75 to 84, with 13 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 50% are also on Medicaid. Their average risk score is 2.75, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Messer's median patient age at 70, with 38% women.
Dr. Messer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Messer's Medicare patients by sex, 2024
- Women1644%
- Men2056%
Chronic conditions among Dr. Messer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Chronic kidney disease47%
- Diabetes47%
- Heart failure47%
- Ischemic heart disease44%
- Depression42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Messer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women38%
- Men62%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas Adam Messer scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Messer for performance year 2024, reported as part of a group. Dr. Messer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Messer's MIPS scores, performance year 2024
- 95of 100Final score
- 74.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 85of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Thomas Adam Messer received $846 in industry payments from 2017 to 2025
CMS Open Payments shows 8 general payments to Dr. Messer from 6 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Teleflex LLC paid the most, $330.
General payments to Dr. Messer by program year, 2017 to 2025
Companies that paid Dr. Messer the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Adam Messer graduated from Rush Medical College of Rush University
Dr. Messer graduated from Rush Medical College of Rush University in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas Adam Messer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas Adam Messer
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What is Dr. Thomas Adam Messer's NPI number?
Dr. Thomas Adam Messer's NPI number is 1205085255. It was assigned on September 15, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Adam Messer?
Dr. Thomas Adam Messer is a general surgeon in Chicago, Illinois. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Thomas Adam Messer practice?
Dr. Messer practices at 1901 W Harrison St, Chicago, IL 60612. Dr. Messer's primary practice is John H. Stroger, Jr. Hospital of Cook County in Chicago, Illinois, part of Cook County Government.
What is Dr. Thomas Adam Messer's office phone number?
The practice phone on file for Dr. Messer is (312) 864-6000.
What is Dr. Thomas Adam Messer's medical license number?
Dr. Messer holds Illinois license 036-116125.
Which hospitals is Dr. Thomas Adam Messer affiliated with?
Dr. Messer practices at John H. Stroger, Jr. Hospital of Cook County in Chicago, Illinois.
What medical group is Dr. Thomas Adam Messer part of?
Dr. Messer is linked to John H. Stroger, Jr. Hospital of Cook County.
Does Dr. Thomas Adam Messer accept Medicare?
Yes. CMS data shows Dr. Messer billed Medicare for 37 services in 2024, and Dr. Messer accepts Medicare assignment.
What is Dr. Thomas Adam Messer's MIPS score?
Dr. Messer's MIPS final score for performance year 2024 is 95 out of 100, reported as part of a group.
How many Medicare patients does Dr. Thomas Adam Messer see?
CMS counts 36 Medicare patients who saw Dr. Messer in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Thomas Adam Messer bill to Medicare?
In 2024, Dr. Messer's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Thomas Adam Messer go to medical school?
Dr. Messer graduated from Rush Medical College of Rush University in 2002.
Has Dr. Thomas Adam Messer received payments from drug or device companies?
CMS Open Payments shows $846 in general payments to Dr. Messer from 6 companies from 2017 to 2025. The largest total came from Teleflex LLC.
How long has Dr. Thomas Adam Messer been practicing?
Dr. Messer graduated from medical school in 2002, 24 years ago.
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