Doctor profile · Federal record

Dr. Evangelos Tambassis, M.D.

Anesthesiology Physician (CMS: Anesthesiology) · Anesthesiology Physician · Jefferson City, MO

  • NPI 1679569198
  • Accepts Medicare
  • 37 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
1445 Christy Dr
Jefferson City, MO 651012853
(573) 636-3483
fax (573) 636-5315
Additional location
1 Saint Elizabeth Blvd
O Fallon, IL 622691099
(618) 234-2120
Additional location
1005 Broadway St
Quincy, IL 623012834
(217) 223-8400
Mailing address
1 Saint Elizabeth Blvd
O Fallon, IL 622691099

Credentials & registration

NPPES · NUCC
NPI registered
September 2005 — 21 yrs on file
Profile last updated
April 5, 2022
Year of graduation
1989 — 37 yrs since
Specialty taxonomy
207L00000X — NUCC code
State licenses (2)
Missouri #104008 · Illinois #036.117610
Medicaid
MO #203941224

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1679569198. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
312
Distinct HCPCS
10
Medicare allowed
$30,544
HCPCS Description Services Patients Avg allowed
00812 Anesthesia for exam of colon using an endoscope 41 41 $77
00731 Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 35 34 $85
00910 Anesthesia for other procedure on urinary system through urethra 34 32 $55
36620 Insertion of artery tube for blood sampling or infusion through skin 30 29 $44
00914 Anesthesia for removal of prostate including use of an endoscope 24 24 $94
00790 Anesthesia for other procedure on upper abdomen 22 22 $156
01922 Anesthesia for x-ray or radiation therapy 21 21 $96
00840 Anesthesia for other procedure on lower abdomen 19 19 $157
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 17 17 $59
00537 Anesthesia for procedure to assess heart electrical activity 16 16 $236

In context: peer comparison

Among 5 peers in Jefferson City Anesthesiology Physician, average services per provider: 28. This provider delivers 11× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$227
Transactions
9
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Chiesi USA, INC. 4 $122.16
Merck Sharp & Dohme LLC 3 $64.68
Vertex Pharmaceuticals Incorporated 1 $22.05
Pacira Pharmaceuticals Incorporated 1 $18.44

By nature of payment

Food and Beverage
$227

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Evangelos Tambassis's medical specialty?
Dr. Evangelos Tambassis practices Anesthesiology Physician in Jefferson City, MO.
Where does Dr. Evangelos Tambassis practice?
Dr. Evangelos Tambassis practices at 1445 Christy Dr, Jefferson City, MO 651012853. Office phone: 5736363483.
What is Dr. Evangelos Tambassis's NPI?
Dr. Evangelos Tambassis's National Provider Identifier (NPI) is 1679569198, issued by NPPES.
Does Dr. Evangelos Tambassis accept Medicare assignment?
Yes. Dr. Evangelos Tambassis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Evangelos Tambassis commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for exam of colon using an endoscope (HCPCS 00812); Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (HCPCS 00731); Anesthesia for other procedure on urinary system through urethra (HCPCS 00910). Source: CMS Medicare Physician & Other Practitioners file.