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Edit this profileAt a glance
- 457 Mclaws Cir, Williamsburg, VA 23185
About Dr. Long
John D. Long, MD is a healthcare provider in Williamsburg, VA specializing in gastroenterology. John trained at Eastern Virginia Medical School, graduating in 1989. Medicare claims data shows John provided 848 services to 832 patients. The services billed most often include biopsy of large bowel using a flexible endoscope, colorectal cancer screening; colonoscopy on individual at high risk, and removal of polyps or growths of large bowel using an endoscope with mechanical snare. This provider record is associated with NPI 1386619393.
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
- (757) 221-0750
- Email not available
Practice Locations
457 MCLAWS CIR
Williamsburg, VA 23185
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
- Acute pancreatitis
- Gallstones
- Pancreatic cysts
- Primary sclerosing cholangitis
Colon and anorectal
Esophagus and swallowing
- Barrett's esophagus
- Eosinophilic esophagitis
- Esophageal stricture
- Esophagitis
Functional bowel and motility
- Chronic diarrhea
- Fecal incontinence
- Small intestinal bacterial overgrowth
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
- Functional dyspepsia
- Gastritis
- Gastroparesis
- H. pylori infection
- Peptic ulcer disease
Bowel & Colon
Digestive Symptoms
- Constipation
Gallbladder & Bile Ducts
- Blocked Bile Duct
Procedures & services
Most searched procedures
- Colonoscopy
- Endoscopy
- Gallbladder removal
- Hernia repair
- Liver biopsy
Lower endoscopy
- Colon polyp removal
- Endoscopic control of gastrointestinal bleeding
- Flexible sigmoidoscopy
Upper endoscopy
- Endoscopic submucosal dissection
- Esophageal dilation
Capsule and physiology testing
- Anorectal manometry
- Capsule endoscopy
- Esophageal manometry
Diagnostic Testing
- 24-Hour Acid Reflux Test
- EUS-Guided Fine Needle Biopsy
- H. Pylori Breath Test
- SIBO Breath Test
Liver procedures
- Esophageal variceal banding
- Liver elastography
- Paracentesis
Treatments
- Stool Transplant
Procedures Most Often Billed to Medicare
848 services · 832 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
197 | More than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
101 | More often than most peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
92 | More than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
68 | As often as other peers in Gastroenterology |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
54 | More than most peers in Gastroenterology |
| Biopsy of lower large bowel using a flexible endoscope | Procedure | 45331 |
12 | Less often than most peers in Gastroenterology |
| Diagnostic exam of lower portion of large bowel using a flexible endoscope | Procedure | 45330 |
11 | Less often than most peers in Gastroenterology |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
104 | More than most peers in Gastroenterology |
| Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Billing code | G0121 |
89 | More than most peers in Gastroenterology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
76 | More 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 2
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 Williamsburg 3
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Eastern Virginia Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at Eastern Virginia Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of large bowel using a flexible endoscope 7
Providers in VA who bill this service to Medicare most often.
Common questions
What does Dr. Long specialize in?
Dr. Long is a gastroenterologist in Williamsburg, VA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Dr. Long located?
Dr. Long is listed at 457 Mclaws Cir, Williamsburg, VA 23185. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Long's phone number?
The number on file is (757) 221-0750. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Long?
Dr. Long's National Provider Identifier is 1386619393. 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. Long go to medical school?
Dr. Long attended Eastern Virginia Medical School, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Long have?
Dr. Long has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Long do most often?
According to Medicare billing data, Dr. Long 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 diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Long's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Long. If this is you, claiming it is free.
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