Specialty Directory
Gastroenterology in Olympia, WA
Federal CMS data for 11 gastroenterology providers practicing in Olympia, WA. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.
11
Providers
Median industry payments
$740
11
Gastroenterology Providers
in Olympia, WA
$740
Median Industry Payments
per provider (2018–2024)
525
Median Medicare Services
fee-for-service claims
How to read this directory: Providers are listed by Medicare service volume, which reflects only
Medicare fee-for-service patients (typically 65+). This does not represent total practice volume.
Industry payments span multiple years and payment types — they are legal and do not indicate wrongdoing.
Gastroenterology includes multiple subspecialties with different practice patterns.
Learn more →
Gastroenterology Providers
NPPES · Open Payments · Medicare| Provider | Medicare Volume | Beneficiaries* | Top Procedure | Industry Payments | Payment Type | Coverage |
|---|---|---|---|---|---|---|
| HEAP, DARIEN M.D. | 1,429 | 1,271 | Colon polyp removal with endoscopic snare | $14 (2023-2023) | Food & Beverage (100%) | Very High |
| MCCABE, MARSHALL MD | 1,217 | 1,049 | Office visit, established patient (30-39 min) | $189 (2018-2023) | Food & Beverage (100%) | Very High |
| JOE, RODNEY MD | 657 | 644 | Colon polyp removal with endoscopic snare | $1,203 (2018-2024) | Gift (44%) | Very High |
| ZHANG, KRISTINE MD | 629 | 591 | Colon polyp removal with endoscopic snare | $658 (2018-2024) | Food & Beverage (87%) | Very High |
| OWENS, DAVID M.D. | 564 | 534 | Colonoscopy with biopsy | $1,300 (2018-2024) | Gift (40%) | Very High |
| XIE, MEIMIN MD | 525 | 512 | Colon polyp removal with endoscopic snare | $436 (2018-2024) | Food & Beverage (80%) | Very High |
| LEONARD, LUCAS M.D. | 517 | 497 | Colon polyp removal with endoscopic snare | $347 (2020-2024) | Food & Beverage (100%) | Very High |
| ELLOWAY, RICHARD MD | 502 | 481 | New patient office visit (45-59 min) | $3,195 (2018-2024) | Food & Beverage (86%) | Very High |
| MERRIFIELD, BENJAMIN MD | 101 | 100 | Upper endoscopy (EGD) | $1,735 (2018-2024) | Food & Beverage (53%) | Very High |
| WAGNER, KATHRYNE MD | 27 | 27 | Initial hospital admission, moderate complexity | $740 (2018-2024) | Food & Beverage (88%) | Very High |
| SILVERMAN, BRUCE MD | — | — | — | $1,275 (2018-2021) | Gift (41%) | High |
Note: Gastroenterology encompasses multiple subspecialties with different practice patterns.
Differences in payment amounts and procedure volumes may reflect subspecialty focus
rather than practice quality. Consider viewing individual profiles for full context.
By Practice Pattern
Gastroenterology encompasses multiple practice patterns. Comparing providers within the same pattern provides more meaningful context.
Clinical Cardiology (7)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| HEAP, DARIEN | 1,429 | $14 |
| MCCABE, MARSHALL | 1,217 | $189 |
| JOE, RODNEY | 657 | $1,203 |
| ZHANG, KRISTINE | 629 | $658 |
| OWENS, DAVID | 564 | $1,300 |
| XIE, MEIMIN | 525 | $436 |
| ELLOWAY, RICHARD | 502 | $3,195 |
Mixed Practice (3)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| LEONARD, LUCAS | 517 | $347 |
| MERRIFIELD, BENJAMIN | 101 | $1,735 |
| WAGNER, KATHRYNE | 27 | $740 |
General Practice (1)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| SILVERMAN, BRUCE | 0 | $1,275 |