Themistocles Dassopoulos, MD
Gastroenterology Physician · Dallas, TX
Themistocles Dassopoulos, MD is a gastroenterology physician with a practice address in Dallas, Texas, and NPI 1326083148, issued on Jun 17, 2006. Check the license (Texas Q0899, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Themistocles Dassopoulos
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- Q0899 TX
2008001013 MO
Self-reported in NPPES; status is on the state search - Practice location
- 3409 Worth Street, Dallas, TX 75246
- Phone
- (469) 800-7180
- Enumerated
- Jun 17, 2006
- Record last updated
- Sep 2, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (469) 800-7190
- Medicaid ID
- 3445801-01 TX
- Medicare enrollment
- Enrolled (PECOS I20150108002136); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 3409 Worth Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Themistocles Dassopoulos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license Q0899Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average gastroenterology physician in 2024
39 Medicare Part D claims for 15 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $3,439.21
106 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Healthtexas Provider NetworkTerrell, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Themistocles Dassopoulos among 1,478 gastroenterology physician records in Texas
Themistocles Dassopoulos, MD is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 51% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated1991 · median 2003 among the 1,175 with a school on file
- Record last updated2016 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
All 1,478 in Texas → Every provider in Dallas → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael Allen, MDDallas, TX 752461043265796
- Clement Boland, MDDallas, TX 752461619921038
- Angela Carollo, M.D.Dallas, TX 752461306805585
- Blair Conner, M.D.Dallas, TX 752461992764922
- Daniel Demarco, M.D.Dallas, TX 752461558320903
- Esmail Elwazir, M.D.Dallas, TX 752461598741944
- John Hamilton, M.D.Dallas, TX 752461033179213
- William Hodges, M.D.Dallas, TX 752461417933599
Common questions
What is Themistocles Dassopoulos, MD's NPI number?
Themistocles Dassopoulos, MD's National Provider Identifier (NPI) is 1326083148, issued on Jun 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Themistocles Dassopoulos, MD located?
The NPPES record lists a practice address at 3409 Worth Street, Dallas, TX, 75246. Phone: (469) 800-7180. Providers update this record themselves, so call before visiting.
How can I verify Themistocles Dassopoulos, MD's license?
NPPES lists Texas license number Q0899, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Themistocles Dassopoulos, MD prescribe under Medicare Part D?
In 2024, Themistocles Dassopoulos, MD had 39 Medicare Part D claims for 15 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.