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Edit this profileAt a glance
- 300 Main St, Lewiston, ME 04240
About Dr. Sterling
Based in Lewiston, ME, Mark J. Sterling, M.D. is listed in the NPI registry under gastroenterology. Mark graduated from New York Medical College in 1991. Medicare claims data shows Mark provided 793 services to 746 patients. The services billed most often include initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope. NPI 1306822069 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
- (207) 795-0111
- Email not available
Practice Locations
300 MAIN ST
Lewiston, ME 04240
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
793 services · 746 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 |
116 | More often than most peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
76 | More than most peers in Gastroenterology |
| 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 |
36 | Less often than most peers in Gastroenterology |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
28 | More often than most peers in Gastroenterology |
| Removal of stone or debris from bile or pancreatic duct using a flexible endoscope | Procedure | 43264 |
22 | As often as other peers in Gastroenterology |
| Insertion of stent into pancreatic or bile duct using a flexible endoscope | Procedure | 43274 |
21 | As often as other peers in Gastroenterology |
| Control of bleeding of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43255 |
13 | Less often than most peers in Gastroenterology |
| Review by radiologist of image from tube placement into bile duct using an endoscope | Imaging | 74328 |
23 | As often as other peers in Gastroenterology |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
146 | More 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.
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 Lewiston 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at New York Medical College 8
Other providers in the same specialty who trained at the same institution.
Class of 1991 at New York Medical College 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 7
Providers in ME who bill this service to Medicare most often.
Common questions
What does Mark J. Sterling specialize in?
Mark J. Sterling is a gastroenterologist in Lewiston, ME. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Mark J. Sterling located?
Mark J. Sterling is listed at 300 Main St, Lewiston, ME 04240. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mark J. Sterling's phone number?
The number on file is (207) 795-0111. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Mark J. Sterling?
Mark J. Sterling's National Provider Identifier is 1306822069. 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 Mark J. Sterling train?
Mark J. Sterling attended New York Medical College, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Mark J. Sterling have?
Mark J. Sterling has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What does Mark J. Sterling do most often?
According to Medicare billing data, Mark J. Sterling performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope and biopsy of large 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, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Mark J. Sterling's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mark J. Sterling. If this is you, claiming it is free.
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