Physician Profile
Themistocles Dassopoulos, MD
Unclaimed ProfileAbout Dr. Dassopoulos
Themistocles Dassopoulos, MD practices gastroenterology in Dallas, TX. Themistocles is a 1991 graduate of Warren Alpert Medical School of Brown University. According to Medicare claims data, Themistocles cared for 170 Medicare patients across 336 services. The services billed most often include administration of chemotherapy into vein, 1 hour or less, infusion, normal saline solution, 250 cc, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (469) 800-7180
- Email not available
Practice Locations
3409 WORTH STREET SUITE 640
Dallas, TX 75246
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
Treatments
Procedures Most Often Billed to Medicare
336 services · 170 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
25 | Less often than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
15 | Less often than most peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
11 | Less often than most peers in Gastroenterology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
86 | More than most peers in Gastroenterology |
| Infusion, normal saline solution, 250 cc | Drug given | J7050 |
84 | More often than most peers in Gastroenterology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
58 | As often as other peers in Gastroenterology |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
21 | As often as other peers in Gastroenterology |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
20 | Less often than most peers in Gastroenterology |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
16 | Less often than most peers in Gastroenterology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other gastroenterologists in Dallas 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Warren Alpert Medical School of Brown University 8
Other providers in the same specialty who trained at the same institution.
Class of 1991 at Warren Alpert Medical School of Brown University 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of large bowel using a flexible endoscope 8
Providers in TX who bill this service to Medicare most often.
Common questions
What is Dr. Dassopoulos's specialty?
Dr. Dassopoulos is a gastroenterologist in Dallas, TX. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where can I find Dr. Dassopoulos?
Dr. Dassopoulos is listed at 3409 Worth Street Suite 640, Dallas, TX 75246. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Dassopoulos?
The number on file is (469) 800-7180. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Dassopoulos's NPI number?
Dr. Dassopoulos's National Provider Identifier is 1326083148. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Dassopoulos's medical education?
Dr. Dassopoulos attended Warren Alpert Medical School of Brown University, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Dassopoulos been practicing?
Dr. Dassopoulos has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Dassopoulos known for?
According to Medicare billing data, Dr. Dassopoulos performs procedures including biopsy of large bowel using a flexible endoscope, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope and diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope; provides treatments such as administration of chemotherapy into vein, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Dassopoulos confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Dassopoulos. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.