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Edit this profileWhere to find Alan G. Chang, M.D.
- Bellingham location main office
3111 Woburn St Ste 201, Bellingham, WA 98226 - Bend location
1342 NE Medical Center Dr Ste 100, Bend, OR 97701
About Dr. Chang
Based in Bellingham, WA, Alan G. Chang, M.D. is listed in the NPI registry under gastroenterology. Alan graduated from University of Hawaii John A. Burns School of Medicine in 1989. Medicare claims data shows Alan provided 94 services to 91 patients. The services billed most often include biopsy of large bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare, and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope. NPI 1255398285 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (360) 543-5054
- Email not available
Practice Locations
3111 WOBURN ST STE 201
Bellingham, WA 98226
1342 NE Medical Center Dr Ste 100
Bend, OR 97701
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
Chronic conditions
Liver health
Specialized and cancer
Wound care
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
Advanced endoscopy
Biliary and pancreatic endoscopy
Capsule and physiology testing
- Ambulatory reflux monitoring
- Capsule endoscopy
- Hydrogen and methane breath testing
- Anorectal manometry
- Esophageal manometry
Chronic illness
Clinical Nutrition
Diagnostic Testing
Digestive
General surgery
Infection & Microbiology Tests
Liver procedures
Lower endoscopy
- Colon polyp removal
- Diagnostic colonoscopy
- Endoscopic control of gastrointestinal bleeding
- Flexible sigmoidoscopy
Nursing care
Nutrition & Digestion
Upper endoscopy
- Endoscopic mucosal resection
- Esophageal biopsy
- Esophageal dilation
- Stomach biopsy
- Endoscopic submucosal dissection
Most searched procedures
Treatments
Procedures Most Often Billed to Medicare
94 services · 91 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
39 | As often as other peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
34 | Less often than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
21 | 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.
Other gastroenterologists at this location 6
Same specialty, same street address — most likely the same department or group.
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 Bellingham 5
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of Hawaii John A. Burns School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at University of Hawaii John A. Burns School of Medicine 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 WA who bill this service to Medicare most often.
Common questions
What is Alan G. Chang's specialty?
Alan G. Chang is a gastroenterologist in Bellingham, WA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where can I find Alan G. Chang?
Alan G. Chang is listed at 3111 Woburn St Ste 201, Bellingham, WA 98226. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Alan G. Chang?
The number on file is (360) 543-5054. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Alan G. Chang?
Alan G. Chang's National Provider Identifier is 1255398285. 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 Alan G. Chang's education?
Alan G. Chang attended University of Hawaii John A. Burns School of Medicine, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Alan G. Chang have?
Alan G. Chang has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What is Alan G. Chang known for?
According to Medicare billing data, Alan G. Chang performs procedures including biopsy of large bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Alan G. Chang's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Alan G. Chang. If this is you, claiming it is free.
Guide.md
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