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Edit this profileAt a glance
- 3111 Woburn St Ste 201, Bellingham, WA 98226
About Dr. Siemanowski
Benjamin Siemanowski, M.D. practices gastroenterology in Bellingham, WA. Benjamin is a 2000 graduate of Jefferson Medical College of Thomas Jefferson University. According to Medicare claims data, Benjamin cared for 828 Medicare patients across 1,037 services. The services billed most often include pathology examination of tissue using a microscope, intermediate complexity, removal of polyps or growths of large bowel using an endoscope with mechanical snare, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1548301120.
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) 734-1420
- Email not available
Practice Locations
3111 WOBURN ST STE 201
Bellingham, WA 98226
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
1,037 services · 828 patients · 14 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
170 | More than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
55 | As often as other peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
25 | Less often than most peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
18 | As often as other peers in Gastroenterology |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | Procedure | 43248 |
12 | Less often than most peers in Gastroenterology |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
19 | As often as other peers in Gastroenterology |
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
359 | More often than most peers in Gastroenterology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
155 | More often than most peers in Gastroenterology |
| Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monit | Billing code | G0500 |
95 | More often than most peers in Gastroenterology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
40 | 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.
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 4
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Jefferson Medical College of Thomas Jefferson University 8
Other providers in the same specialty who trained at the same institution.
Class of 2000 at Jefferson Medical College of Thomas Jefferson University 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of polyps or growths of large bowel using an endoscope with mechanical snare 8
Providers in WA who bill this service to Medicare most often.
Common questions
What does Benjamin Siemanowski specialize in?
Benjamin Siemanowski 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 is Benjamin Siemanowski located?
Benjamin Siemanowski 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
What is Benjamin Siemanowski's phone number?
The number on file is (360) 734-1420. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Benjamin Siemanowski's NPI number?
Benjamin Siemanowski's National Provider Identifier is 1548301120. 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 Benjamin Siemanowski train?
Benjamin Siemanowski attended Jefferson Medical College of Thomas Jefferson University, graduating in 2000. This comes from the CMS National Downloadable File.
CMS public data
How long has Benjamin Siemanowski been practicing?
Benjamin Siemanowski has 26 years experience. Calculated from a graduation year of 2000, reported in the CMS National Downloadable File.
CMS public data
What does Benjamin Siemanowski do most often?
According to Medicare billing data, Benjamin Siemanowski performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope and biopsy of large bowel using a flexible endoscope; provides treatments such as infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Benjamin Siemanowski confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Benjamin Siemanowski. If this is you, claiming it is free.
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