Ammar Nassri, M.D
NPI 1548689409 · Gastroenterology Physician · Rockwall, TX
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ammar Nassri, M.D is a Gastroenterology Physician provider in Rockwall, TX (NPI 1548689409).
Provider details
- NPI number
- 1548689409
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- BP10049996 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
467 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 77 | $84 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 76 | $238 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 54 | $171 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 44 | $182 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 35 | $117 |
| Biopsy of Large Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 136 | 62 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 136 | 134 |
| Linaclotidebrand: Linzess | 31 | 11 |
| Famotidine | 30 | — |
| Pantoprazole Sodium | 29 | 11 |
| Sucralfate | 24 | 12 |
| Lipase/Protease/Amylasebrand: Creon | 17 | — |
Practice location
Mailing address
Additional practice locations (4)
- 655 W 8th StJacksonville, FL 32209-6511Phone: (904) 244-0411
- 55 Fruit StBoston, MA 02114-2696Phone: (617) 726-2000
- 81 Highland AveSalem, MA 01970-2768Phone: (978) 741-1200
- 601 E 15th StUniversity Medical Center Brackenridge, 601 E 15th StAustin, TX 78701-1930Phone: (512) 324-8355
Registry dates
- Enumerated
- 2014-04-08
- Last updated
- 2025-04-07
- Certified
- 2025-04-07
Frequently asked questions
- What is Ammar Nassri's NPI number?
- Ammar Nassri's National Provider Identifier (NPI) is 1548689409, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ammar Nassri's specialty?
- Ammar Nassri is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Ammar Nassri located?
- Ammar Nassri's practice location on file with NPPES is 3144 Horizon Rd Ste 210, Rockwall, TX 75032-7047.
- What is Ammar Nassri's phone number?
- The practice phone number listed in the NPPES registry for Ammar Nassri is (972) 771-2222.
- Does Ammar Nassri accept Medicare?
- Ammar Nassri is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ammar Nassri's NPI active?
- Yes — Ammar Nassri's NPI (1548689409) is active in the NPPES registry as of the last update on 2025-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.