DR. BENJAMIN F MERRIFIELD (MD) – Gastroenterology Physician, NPI 1083695167
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
474 GASTROENTEROLOGY in WA
Provider Addresses for DR. BENJAMIN F MERRIFIELD (MD)
500 Lilly Rd NE
Suite 204
Olympia, WA 985065195
Phone: (360) 413-8250
Fax: (360) 413-8830
Type: Location
500, Lilly Road Northeast, Olympia, Thurston County, Washington, 98506, United States
SUITE 204
OLYMPIA, WA 985065195
Phone: (360) 413-8250
Fax: (360) 413-8830
Type: Location
209, Lilly Road Northeast, Olympia, Thurston County, Washington, 98506, United States
OLYMPIA, WA 98506
Phone: (360) 413-8250
Fax: (360) 413-8830
Type: Mailing
209 LILLY RD NE
OLYMPIA, WA 98506
Phone: (360) 413-8250
Fax: (360) 413-8830
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $997.
Total Amount is formed as General ($997) + Research ($0) + Ownership ($0) = $997.
Last reported payment date: 2024-05-20 • Largest payer in this snapshot: CONMED Corporation ($722).
Total Amount
$997
General + Research + Ownership
Payments
7
Total payment records
General Amount
$997
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-05-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| CONMED Corporation | $722 |
| Boston Scientific Corporation | $114 |
| Micro-tech Endoscopy USA, Inc. | $111 |
| Olympus America Inc. | $51 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2005-04-28
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20050428000941 | I | Gastroenterology | WA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 43235 | Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 31 | 30 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 27 | 27 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 16 | 16 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 15 | 15 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 12 | 12 | $0 |
Insurance plans in this area (ZIP 98506)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | WA | |
| Nurse Practitioner | WA | |
| Nurse Practitioner | WA | |
| G A S T R O E N T E R O L O G Y | WA | |
| Nurse Practitioner | WA | |
| G A S T R O E N T E R O L O G Y | WA | |
| G A S T R O E N T E R O L O G Y | WA | |
| Physician Assistant | WA | |
| Gastroenterology, Internal Medicine | WA | |
| G A S T R O E N T E R O L O G Y | WA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.