John Walker, D.O.
Gastroenterology · Portland, ME
John Walker, D.O. is a gastroenterology in Portland, ME with about 13 yrs in practice.
- SpecialtyGastroenterology
- Medical schoolOTHER (2013)
- TelehealthNot reported
- Practice size2,615 clinicians
- Medicare assignmentAccepts assignment (Medicare-approved amount as full payment)
- Medicare activity~242 patients across 445 services, avg age 71
Common services
| Service | Medicare services | Medicare allows | |
|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 96 | $217 | See prices → |
| Biopsy of large bowel using a flexible endoscope | 65 | $46 | See prices → |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 51 | $87 | See prices → |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | 32 | $94 | See prices → |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 19 | $107 | See prices → |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | 15 | $63 | See prices → |
Hospital affiliations
Source: CMS Medicare Physician & Other Practitioners and the Doctors & Clinicians National Downloadable File (most recent release). Counts reflect Original Medicare activity only and are not a measure of quality. “Medicare allows” is the Medicare fee schedule amount — not what an insured or cash patient pays; for patient prices see the linked procedure pages. Always confirm a clinician’s current details with their office.