Jason Samarasena, M.D.
NPI 1629253364 · Gastroenterology Physician · Orange, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Samarasena, M.D. is a Gastroenterology Physician provider in Orange, CA (NPI 1629253364).
Provider details
- NPI number
- 1629253364
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A100124 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
654 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 112 | $46 |
| Ultrasound Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43259 | 84 | $217 |
| Microscopic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43252 | 62 | $110 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 57 | $226 |
| Destruction of Polyp Or Growth of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43270 | 46 | $234 |
| Ultrasound Guided Needle Aspiration Or Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 115 | 39 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 62 | 59 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 57 | 54 |
| Pantoprazole Sodium | 52 | 18 |
| Sucralfate | 34 | 16 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 22 | 21 |
| Sodium, Potassium,mag Sulfates |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$38,304 across 87 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-12-31
- Last updated
- 2025-01-24
- Certified
- 2025-01-24
Frequently asked questions
- What is Jason Samarasena's NPI number?
- Jason Samarasena's National Provider Identifier (NPI) is 1629253364, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Samarasena's specialty?
- Jason Samarasena is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Samarasena located?
- Jason Samarasena's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Jason Samarasena's phone number?
- The practice phone number listed in the NPPES registry for Jason Samarasena is (714) 456-6693.
- Does Jason Samarasena accept Medicare?
- Jason Samarasena is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Samarasena's NPI active?
- Yes — Jason Samarasena's NPI (1629253364) is active in the NPPES registry as of the last update on 2025-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.