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DR. THEMISTOCLES DASSOPOULOS MD
NPI 1326083148
Internal Medicine - Gastroenterology in Dallas, TX

Active since June 17, 2006PECOS EnrolledAccepts Medicare Assignment
3409 WORTH STREET, SUITE 640, DALLAS, TX 75246(469) 800-7180(469) 800-7190 Get Directions Write a Review

NPPES record last updated: September 2, 2016. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Themistocles Dassopoulos Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. THEMISTOCLES DASSOPOULOS MD (NPI 1326083148) is an individual gastroenterology provider in Dallas, Texas, licensed in Texas (Q0899) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Baylor University Medical Center, and is a graduate of Warren Alpert Medical School Of Brown University (1991).

NPPES Registry Identity

NPI1326083148
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. THEMISTOCLES DASSOPOULOSCredential: MD
Location Address3409 WORTH STREET, SUITE 640Dallas, TX 75246
Mailing Address3409 Worth Street, Suite 640Dallas, TX 75246 · (469) 800-7180 · Fax (469) 800-7190
Phone(469) 800-7180
Fax(469) 800-7190
Sole ProprietorNo
Medical School CMSWarren Alpert Medical School Of Brown UniversityGraduated 1991
Enumeration DateJune 17, 2006
Last NPPES UpdateSeptember 2, 2016
✔ NPI 1326083148 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses✔ Licensed in TX · Q0899✔ Licensed in MO · 2008001013
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
3409 WORTH STREET, Dallas, TX 75246
Open in Google Maps ↗

Other Identifiers 3

Other7310099TX · Aetna Medicare
Other1760488936TX · Group Npi
Medicaid3445801-01TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Themistocles Dassopoulos Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3476563446
PECOS Enrollment IDI20150108002136
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Administration of chemotherapy into vein, 1 hour or less 96413
Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.
86 services14 patients
Infusion, normal saline solution, 250 cc J7050
An infusion of normal saline solution, 250 cc, involves administering a sterile saltwater solution into your body through a vein, usually in your arm. This helps to replenish fluids, maintain hydration, and balance electrolytes in your body.
84 services13 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
58 services38 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
25 services25 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
21 services21 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
20 services20 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Baylor University Medical Center

Acute Care Hospitals · Dallas, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number450021
Location3500 Gaston AveDallas, TX 75246 · Dallas County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75246 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$131.01 typical visit price
range $57.18 – $172.86
Typical copayment $32.75 (range $14.29 – $43.21)
Most-billed visit code 99204
Established Patient
$100.80 typical visit price
range $18.48 – $141.20
Typical copayment $25.20 (range $4.62 – $35.30)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Parenteral nutrition solution, not otherwise specified, 10 grams lipids B4185
Other-Enteral and Parenteral · category OB005N
1 supplier33 claims315 services$4.21 avg. paid by Medicare
Parenteral nutrition solution; compounded amino acid and carbohydrates with electrolytes, trace elements and vitamins, including preparation, any strength, 74 to 100 grams of protein - premix B4197
Other-Enteral and Parenteral · category OB005N
1 supplier39 claims233 services$280.37 avg. paid by Medicare
Parenteral nutrition supply kit; premix, per day B4220
Other-Enteral and Parenteral · category OB005N
1 supplier47 claims289 services$8.02 avg. paid by Medicare
Parenteral nutrition administration kit, per day B4224
Other-Enteral and Parenteral · category OB005N
1 supplier48 claims296 services$25.03 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EDSON H CHEUNG MD PA
Surgery
3409 WORTH STREET, STE 720
DALLAS, TX 75246
Dallas County (214) 821-3603
SAMAN AHMED M.D.
Internal Medicine
3409 WORTH STREET, SUITE 420
DALLAS, TX 75246
Dallas County (214) 820-2346
ROBERT F HEBELER MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
3409 WORTH STREET, STE 720
DALLAS, TX 75246
Dallas County (214) 821-3603
GENERAL & ONCOLOGY SURGERY ASSOC LLP
Surgery (Surgical Oncology)
3409 WORTH STREET, SUITE 420
DALLAS, TX 75246
Dallas County (214) 824-9963
EDSON H CHEUNG MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
3409 WORTH STREET, STE 720
DALLAS, TX 75246
Dallas County (214) 821-3603
NORTH TEXAS INFUSION AND SPECIALTY PHARMACY, L.L.C.
Pharmacy (Home Infusion Therapy Pharmacy)
3409 WORTH STREET, SUITE 725
DALLAS, TX 75246
Dallas County (214) 276-5616
HARRY MARTIN NIMA ZEGARRA M.D.
Internal Medicine (Critical Care Medicine)
3409 WORTH STREET, SUITE 420
DALLAS, TX 75246
Dallas County (214) 820-2346
DR. WENRU SONG MD
Internal Medicine (Medical Oncology)
3409 WORTH STREET, SUITE 600
DALLAS, TX 75246
Dallas County (214) 820-6113

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Themistocles Dassopoulos's NPI number?

The NPI number for Themistocles Dassopoulos is 1326083148. It was assigned to this individual provider in the NPPES registry on June 17, 2006.

Where is Themistocles Dassopoulos located?

Themistocles Dassopoulos practices at 3409 Worth Street Suite 640, Dallas, TX 75246. The listed phone number is (469) 800-7180.

What is Themistocles Dassopoulos's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Themistocles Dassopoulos enrolled in Medicare?

Yes. Themistocles Dassopoulos is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Themistocles Dassopoulos accept?

Health plans from Baylor Scott and White Health Plan and Blue Cross and Blue Shield of Texas list Themistocles Dassopoulos as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Themistocles Dassopoulos affiliated with any hospitals?

According to CMS data, Themistocles Dassopoulos is affiliated with Baylor University Medical Center.

When was this NPI record last updated?

The NPPES record for Themistocles Dassopoulos was last updated on September 2, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.