What is Benjamin Merrifield's NPI number?

Benjamin Merrifield's National Provider Identifier (NPI) is 1083695167, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Benjamin Merrifield's specialty?

Benjamin Merrifield is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).

Where is Benjamin Merrifield located?

Benjamin Merrifield's practice location on file with NPPES is 209 Lilly Rd Ne, Olympia, WA 98506.

What is Benjamin Merrifield's phone number?

The practice phone number listed in the NPPES registry for Benjamin Merrifield is (360) 413-8250.

Does Benjamin Merrifield accept Medicare?

Benjamin Merrifield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Benjamin Merrifield's NPI active?

Yes — Benjamin Merrifield's NPI (1083695167) is active in the NPPES registry as of the last update on 2023-03-07.

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Benjamin Merrifield, MD

NPI 1083695167 · Gastroenterology Physician · Olympia, WA

Benjamin Merrifield, MD is a Gastroenterology Physician provider in Olympia, WA (NPI 1083695167).

Provider details

NPI number: 1083695167
Entity type: Individual
Primary specialty: Gastroenterology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: MD00044510 (WA)

Practice location

209 Lilly Rd Ne

Olympia, WA 98506

Phone: (360) 413-8250

Fax: (360) 413-8830

Street-level locationGet directions

More WA providers

Mailing address

209 Lilly Rd Ne

Olympia, WA 98506

Specialties & taxonomies

Gastroenterology PhysicianPrimary207RG0100XLicense MD00044510 (WA)
Allopathic & Osteopathic Physicians

Additional practice locations (1)

500 Lilly Rd Ne
Suite 204
Olympia, WA 98506-5195
Phone: (360) 413-8250
Fax: (360) 413-8830

Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(74/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
21 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
2 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
121 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222	28	$127
Diagnostic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43235	25	$98
Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239	18	$99
Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378	14	$178
Insertion of Guide Wire With Dilation of Esophagus Using a Flexible Endoscope43248	12	$148
Control of Bleeding of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$224 across 2 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2005-11-07
Last updated: 2023-03-07
Certified: 2021-04-21

Frequently asked questions

What is Benjamin Merrifield's NPI number?: Benjamin Merrifield's National Provider Identifier (NPI) is 1083695167, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Benjamin Merrifield's specialty?: Benjamin Merrifield is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
Where is Benjamin Merrifield located?: Benjamin Merrifield's practice location on file with NPPES is 209 Lilly Rd Ne, Olympia, WA 98506.
What is Benjamin Merrifield's phone number?: The practice phone number listed in the NPPES registry for Benjamin Merrifield is (360) 413-8250.
Does Benjamin Merrifield accept Medicare?: Benjamin Merrifield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Benjamin Merrifield's NPI active?: Yes — Benjamin Merrifield's NPI (1083695167) is active in the NPPES registry as of the last update on 2023-03-07.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222	28	$127
Diagnostic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43235	25	$98
Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239	18	$99
Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378	14	$178
Insertion of Guide Wire With Dilation of Esophagus Using a Flexible Endoscope43248	12	$148
Control of Bleeding of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$224 across 2 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider does (Medicare)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Frequently asked questions

Profile Score

What this provider does (Medicare)

Transparency — industry payments