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Edit this profileWhere to find Christopher A. Marshall, M.D.
- Worcester location main office
55 Lake Ave N, Worcester, MA 01655 - Marlborough location
157 Union St, Marlborough, MA 01752 - Worcester location
21 Eastern Ave, Worcester, MA 01605 - Worcester location
119 Belmont St, Worcester, MA 01605
About Dr. Marshall
Christopher A. Marshall, M.D. is a healthcare provider in Worcester, MA specializing in gastroenterology. Christopher trained at University of Massachusetts Medical School, graduating in 2004. Medicare claims data shows Christopher provided 625 services to 598 patients. The services billed most often include removal of polyps or growths of large bowel using an endoscope with mechanical snare, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and biopsy of large bowel using a flexible endoscope. This provider record is associated with NPI 1942306261.
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
- (508) 334-3068
- Email not available
Practice Locations
55 LAKE AVE N
Worcester, MA 01655
157 Union St
Marlborough, MA 01752
21 Eastern Ave
Worcester, MA 01605
119 Belmont St
Worcester, MA 01605
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
625 services · 598 patients · 19 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 |
94 | More often than most peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
58 | More often than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
31 | As often as other peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
24 | As often as other peers in Gastroenterology |
| Insertion of stent into pancreatic or bile duct using a flexible endoscope | Procedure | 43274 |
19 | As often as other peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
18 | More often than most peers in Gastroenterology |
| Removal of stone or debris from bile or pancreatic duct using a flexible endoscope | Procedure | 43264 |
17 | Less often than most peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
17 | As often as other peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
14 | More often than most peers in Gastroenterology |
| Review by radiologist of image from tube placement into bile duct using an endoscope | Imaging | 74328 |
19 | 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 3
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 — 27 related providers in 4 groups
Other gastroenterologists in Worcester 5
Same specialty, same city.
Trained at University of Massachusetts Medical School 7
Other providers in the same specialty who trained at the same institution.
Class of 2004 at University of Massachusetts Medical School 7
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 MA who bill this service to Medicare most often.
Common questions
What does Christopher A. Marshall specialize in?
Christopher A. Marshall is a gastroenterologist in Worcester, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Christopher A. Marshall located?
Christopher A. Marshall is listed at 55 Lake Ave N, Worcester, MA 01655. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Christopher A. Marshall's phone number?
The number on file is (508) 334-3068. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Christopher A. Marshall?
Christopher A. Marshall's National Provider Identifier is 1942306261. 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 Christopher A. Marshall train?
Christopher A. Marshall attended University of Massachusetts Medical School, graduating in 2004. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Christopher A. Marshall have?
Christopher A. Marshall has 22 years experience. Calculated from a graduation year of 2004, reported in the CMS National Downloadable File.
CMS public data
What does Christopher A. Marshall do most often?
According to Medicare billing data, Christopher A. Marshall performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of large bowel using a flexible endoscope and biopsy 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; provides treatments such as imaging of digestive tract done from the inside of the digestive tract and study of esophagus to assess movement, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Christopher A. Marshall's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Christopher A. Marshall. If this is you, claiming it is free.
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