Physician Profile
Michael C. Larsen, MD
Unclaimed ProfileAbout Dr. Larsen
Based in Seattle, WA, Michael C. Larsen, MD is listed in the NPI registry under gastroenterology. Michael graduated from Columbia University College of Physicians and Surgeons in 2005. Michael is also listed as specializing in internal medicine. According to Medicare claims data, Michael cared for 403 Medicare patients across 509 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (206) 223-2319
- Email not available
Practice Locations
1100 9TH AVE
Seattle, WA 98101
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
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
509 services · 403 patients · 13 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of stone or debris from bile or pancreatic duct using a flexible endoscope | Procedure | 43264 |
67 |
| Insertion of stent into pancreatic or bile duct using a flexible endoscope | Procedure | 43274 |
62 |
| Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43259 |
51 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
48 |
| Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43242 |
47 |
| Replacement of stent in pancreatic or bile duct using a flexible endoscope | Procedure | 43276 |
41 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
35 |
| Balloon dilation of pancreatic or bile duct or sphincter using a flexible endoscope | Procedure | 43277 |
15 |
| Removal of stent from pancreatic or bile duct using a flexible endoscope | Procedure | 43275 |
13 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
12 |
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 gastroenterology specialists at this location 1
Same specialty, same street address — most likely the same department or group.
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.
More connections — 31 related providers in 4 groups
Other gastroenterology specialists in Seattle 7
Same specialty, same city.
Trained at Columbia University College of Physicians and Surgeons 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of stone or debris from bile or pancreatic duct using a flexible endoscope 8
Providers in WA who bill this service to Medicare most often.
Common questions
What does Dr. Larsen specialize in?
Dr. Larsen is a gastroenterology in Seattle, WA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Larsen located?
Dr. Larsen is listed at 1100 9Th Ave, Seattle, WA 98101. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Larsen's phone number?
The number on file is (206) 223-2319. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Larsen's NPI number?
Dr. Larsen's National Provider Identifier is 1962685222. 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 Dr. Larsen go to medical school?
Dr. Larsen attended Columbia University College of Physicians and Surgeons, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Larsen been practicing?
Dr. Larsen has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Larsen do most often?
According to Medicare billing data, Dr. Larsen performs procedures including removal of stone or debris from bile or pancreatic duct using a flexible endoscope, insertion of stent into pancreatic or bile duct using a flexible endoscope and ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope; reads or performs imaging such as review by radiologist of image from tube placement into bile duct using an endoscope and review by radiologist of image to guide opening of digestive tract, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Larsen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Larsen. 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.