Physician Profile
Jason B. Samarasena, M.D.
Unclaimed ProfileAbout Dr. Samarasena
Jason B. Samarasena, M.D. practices gastroenterology in Orange, CA. Jason is also listed as specializing in internal medicine. According to Medicare claims data, Jason cared for 602 Medicare patients across 654 services. The services billed most often include biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope, and microscopic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope.
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
- (714) 456-6693
- Email not available
Practice Locations
101 THE CITY DR S BUILDING 200, SUITE 720
Orange, CA 92868
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
- Functional dyspepsia
- Gastritis
- Gastroparesis
- H. pylori infection
- Peptic ulcer disease
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
654 services · 602 patients · 17 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
112 | More often than most peers in Gastroenterology |
| Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43259 |
84 | More than most peers in Gastroenterology |
| Microscopic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43252 |
62 | More often than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
57 | As often as other peers in Gastroenterology |
| Destruction of polyp or growth of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43270 |
46 | More than most peers in Gastroenterology |
| Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43242 |
43 | More often than most peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
39 | As often as other peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
36 | More often than most peers in Gastroenterology |
| Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope through mouth | Procedure | 43237 |
32 | More often than most peers in Gastroenterology |
| Removal of large bowel tissue using a flexible endoscope | Procedure | 45390 |
20 | As often as other 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 3
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 Orange 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Jason B. Samarasena?
Jason B. Samarasena is a gastroenterologist in Orange, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
What is Jason B. Samarasena's address?
Jason B. Samarasena is listed at 101 the City Dr S Building 200, Suite 720, Orange, CA 92868. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Jason B. Samarasena?
The number on file is (714) 456-6693. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Jason B. Samarasena's NPI number?
Jason B. Samarasena's National Provider Identifier is 1629253364. 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
Where did Jason B. Samarasena train?
Jason B. Samarasena attended Other, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Jason B. Samarasena been practicing?
Jason B. Samarasena has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What procedures does Jason B. Samarasena perform?
According to Medicare billing data, Jason B. Samarasena performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope and microscopic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope; reads or performs imaging such as ultrasound scan of organ tissue for measuring elasticity; provides treatments such as study of esophageal sensation by balloon distension, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Jason B. Samarasena confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Jason B. Samarasena. 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.