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Edit this profileAt a glance
- 100 Methodist Blvd, Hattiesburg, MS 39402
About Dr. Farmer
Based in Hattiesburg, MS, William M. Farmer, D.O. is listed in the NPI registry under gastroenterology. William graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2002. According to Medicare claims data, William cared for 1,516 Medicare patients across 8,662 services. The services billed most often include injection, vedolizumab, intravenous, 1 mg, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1558374850 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
- (601) 268-5185
- Email not available
Practice Locations
100 METHODIST BLVD
Hattiesburg, MS 39402
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
Chronic conditions
Liver health
Specialized and cancer
Wound care
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
Advanced endoscopy
Biliary and pancreatic endoscopy
Capsule and physiology testing
- Ambulatory reflux monitoring
- Capsule endoscopy
- Hydrogen and methane breath testing
- Anorectal manometry
- Esophageal manometry
Chronic illness
Clinical Nutrition
Diagnostic Testing
Digestive
General surgery
Infection & Microbiology Tests
Liver procedures
Lower endoscopy
- Colon polyp removal
- Diagnostic colonoscopy
- Endoscopic control of gastrointestinal bleeding
- Flexible sigmoidoscopy
Nursing care
Nutrition & Digestion
Upper endoscopy
- Endoscopic mucosal resection
- Esophageal biopsy
- Esophageal dilation
- Stomach biopsy
- Endoscopic submucosal dissection
Most searched procedures
Treatments
Procedures Most Often Billed to Medicare
8,662 services · 1,516 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
149 | More often than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
147 | More often than most peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
132 | More often than most peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
37 | More often than most peers in Gastroenterology |
| Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | Procedure | 43249 |
28 | More often than most peers in Gastroenterology |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | Procedure | 43248 |
24 | As often as other peers in Gastroenterology |
| Biopsy of lower large bowel using a flexible endoscope | Procedure | 45331 |
19 | More often than most peers in Gastroenterology |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
18 | As often as other peers in Gastroenterology |
| Banding of hemorrhoids using a flexible endoscope (sigmoidoscope) | Procedure | 45350 |
14 | Too few peers to compare |
| Ultrasound scan of organ tissue for measuring elasticity | Imaging | 76981 |
59 | 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 3
Same specialty, same street address — most likely the same department or group.
Also at this address 3
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 Hattiesburg 7
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Kansas City University of Med & Biosciences, College of Osteo Med 8
Other providers in the same specialty who trained at the same institution.
Class of 2002 at Kansas City University of Med & Biosciences, College of Osteo Med 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 8
Providers in MS who bill this service to Medicare most often.
Common questions
What does William M. Farmer specialize in?
William M. Farmer is a gastroenterologist in Hattiesburg, MS. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is William M. Farmer located?
William M. Farmer is listed at 100 Methodist Blvd, Hattiesburg, MS 39402. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is William M. Farmer's phone number?
The number on file is (601) 268-5185. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William M. Farmer's NPI number?
William M. Farmer's National Provider Identifier is 1558374850. 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 William M. Farmer train?
William M. Farmer attended Kansas City University of Med & Biosciences, College of Osteo Med, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How long has William M. Farmer been practicing?
William M. Farmer has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What does William M. Farmer do most often?
According to Medicare billing data, William M. Farmer performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare and biopsy of large bowel using a flexible endoscope; reads or performs imaging such as ultrasound scan of organ tissue for measuring elasticity and complete ultrasound scan of abdomen; provides treatments such as infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less and measurement of liver stiffness, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William M. Farmer confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William M. Farmer. If this is you, claiming it is free.
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