Dr. Evangelos G. Tambassis, MD
- Medicare services, 2024
- 360
- Medicare patients, 2024
- 407
- Hospital affiliations
- 3
- Industry payments
- $2,842
- Medical groups
- 3
- Practice address
- 1005 Broadway St, Quincy, IL 62301
- Practice phone
- Call (217) 223-1200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tambassis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Evangelos G. Tambassis is an anesthesiologist in Quincy, Illinois
Dr. Tambassis practices at Blessing Hospital in Quincy, Illinois, part of Blessing Health System.
Dr. Tambassis' NPI, 1679569198, was assigned on September 20, 2005. Dr. Tambassis holds Missouri license 104008.
- NPI
- 1679569198NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587761325
- NPI enumeration date
- September 20, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (217) 223-1200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Evangelos G. Tambassis practices at Blessing Hospital in Quincy, Illinois
Dr. Tambassis' primary practice is Blessing Hospital, at 1005 Broadway St, Quincy, IL 62301 in Adams County. The practice phone is (217) 223-1200.
- Blessing Hospital1005 Broadway St, Quincy, IL 62301 · Adams CountyPhone(217) 223-1200
Source: Dmand AI Affiliation Data
Dr. Evangelos G. Tambassis is affiliated with 3 sites of care and 3 medical groups
Dr. Tambassis' primary practice is Blessing Hospital in Quincy, Illinois, part of Blessing Health System. Dr. Tambassis is also affiliated with Memorial Hospital in Belleville. The medical group on file is Blessing Hospital. Dmand AI also links Dr. Tambassis to 1 more hospital and 2 medical groups, each named with a free account. Dr. Tambassis' employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Evangelos G. Tambassis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tambassis practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Blessing Hospital | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Blessing Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Evangelos G. Tambassis is one of 1,887 anesthesiologists in Illinois
Anesthesiology is Dr. Tambassis' primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Tambassis' licenses on file in 2 states: Missouri and Illinois.
Specialties and state licenses
- Anesthesiology, MissouriPrimary
- Illinois license
Anesthesiologists near Dr. Tambassis
Counts of anesthesiologists 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. Evangelos G. Tambassis billed Medicare for 360 services in 2024
CMS data shows 360 Medicare services from Dr. Tambassis across 18 procedure codes in 2024, for 407 Medicare patients. Medicare paid $26,828 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Tambassis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 2542024: 2571%
- Surgery
- 2023: 582024: 8648%
- Imaging
- 2023: 02024: 17
Dr. Tambassis compared with the Illinois median for anesthesiologists, 2024
- Dr. Tambassis
- Illinois median
- Medicare services
- 360vs 914.0 times
- Medicare patients
- 407vs 1572.6 times
Medians across 1,742 anesthesiologists in Illinois with Dmand AI profiles that report each measure.
Dr. Tambassis' 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.
Need commercial claims for Dr. Tambassis?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tambassis and other anesthesiologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Evangelos G. Tambassis treated 407 Medicare patients in 2024, average age 73
CMS counts 407 Medicare patients who saw Dr. Tambassis in 2024. The largest group is 65 to 74, with 178 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.79, 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. Tambassis' median patient age at 69, with 50% women.
Dr. Tambassis' Medicare patients by age, 2024
Dr. Tambassis' Medicare patients by sex, 2024
- Women21052%
- Men19748%
Chronic conditions among Dr. Tambassis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Diabetes46%
- Ischemic heart disease45%
- Chronic kidney disease43%
- Atrial fibrillation39%
- COPD35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tambassis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Evangelos G. Tambassis takes part in Medicare
Dr. Tambassis accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Evangelos G. Tambassis received $2,842 in industry payments from 2016 to 2025
CMS Open Payments shows 62 general payments to Dr. Tambassis from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. Merck Sharp & Dohme Corporation paid the most, $846.
General payments to Dr. Tambassis by program year, 2016 to 2025
General payments to Dr. Tambassis by kind, 2016 to 2025
- Food and beverage$2,74196%
- Speaker and faculty fees$1014%
Companies that paid Dr. Tambassis the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Evangelos G. Tambassis'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Evangelos G. Tambassis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Evangelos G. Tambassis' NPI number?
Dr. Evangelos G. Tambassis' NPI number is 1679569198. It was assigned on September 20, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Evangelos G. Tambassis?
Dr. Evangelos G. Tambassis is an anesthesiologist in Quincy, Illinois. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Evangelos G. Tambassis practice?
Dr. Tambassis practices at 1005 Broadway St, Quincy, IL 62301. Dr. Tambassis' primary practice is Blessing Hospital in Quincy, Illinois, part of Blessing Health System. Dmand AI also links Dr. Tambassis to 1 hospital and 2 medical groups.
What is Dr. Evangelos G. Tambassis' office phone number?
The practice phone on file for Dr. Tambassis is (217) 223-1200.
What is Dr. Evangelos G. Tambassis' medical license number?
Dr. Tambassis holds Missouri license 104008, one of the licenses on file in 2 states.
Which states has Dr. Evangelos G. Tambassis been licensed in?
Dmand AI has state licenses on file for Dr. Tambassis in Missouri and Illinois.
Which hospitals is Dr. Evangelos G. Tambassis affiliated with?
Dr. Tambassis practices at Blessing Hospital in Quincy, Illinois. Dr. Tambassis is also affiliated with Memorial Hospital in Belleville. Dmand AI links Dr. Tambassis to 1 more hospital.
What medical group is Dr. Evangelos G. Tambassis part of?
Dr. Tambassis is linked to Blessing Hospital. Dmand AI links Dr. Tambassis to 2 more medical groups.
Does Dr. Evangelos G. Tambassis accept Medicare?
Yes. CMS data shows Dr. Tambassis billed Medicare for 360 services in 2024, and Dr. Tambassis accepts Medicare assignment.
How many Medicare patients does Dr. Evangelos G. Tambassis see?
CMS counts 407 Medicare patients who saw Dr. Tambassis in 2024, with an average age of 73.
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What services does Dr. Evangelos G. Tambassis bill to Medicare?
In 2024, Dr. Tambassis' most billed Medicare services were surgery: heart and blood vessels (36620), anesthesia (00910) and anesthesia (00731).
Has Dr. Evangelos G. Tambassis received payments from drug or device companies?
CMS Open Payments shows $2,842 in general payments to Dr. Tambassis from 14 companies from 2016 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Evangelos G. Tambassis been practicing?
Dr. Tambassis graduated from medical school in 1989, 37 years ago.
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