David Benjamin Liang, M.D.
Gastroenterology (CMS) · Edmonds, WA
At a glance
21600 Highway 99 Ste 260, Edmonds, WA 98026-8049
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Oct 11, 2024. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
21600 Highway 99 Ste 260Edmonds, WA 98026-8049
Additional reported practice locations
1615 Delaware StLongview, WA 986322367
Phone: 3604142730
Fax: 3604142739 1615 Delaware St
Longview, WA 986322367
Phone: 3604142730
Fax: 3604142739 4545 Cordata Pkwy Ste 1B
Bellingham, WA 982267264
Phone: 3607525216
Fax: 3607525656 1818 Cole St Fl 1
Enumclaw, WA 980223504
Phone: 3608025023
Fax: 3608025039 125 16Th Ave E
Seattle, WA 981125211
Phone: 2063263000
Fax: 8775152975
Education & affiliations
- Medical / professional school
- George Washington University School Of Medicine
- Graduation year
- 2004
- CMS specialties
- Gastroenterology
Practice groups
Reported hospital affiliations
- Peacehealth St Joseph Medical Center Bellingham, WA
- Yakima Valley Memorial Yakima, WA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Colonoscopy | 142 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 182 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $160.62 |
Reporting companies
| Company | Amount |
|---|---|
| ABBVIE INC. | $52.12 |
| AIMMUNE THERAPEUTICS, INC. | $36.57 |
| BOSTON SCIENTIFIC CORPORATION | $28.44 |
| SALIX PHARMACEUTICALS, A DIVISION OF BAUSCH HEALTH US, LLC | $23.61 |
| JANSSEN BIOTECH, INC. | $19.88 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Gastroenterology (CMS)
- Taxonomy code
- 207RG0100X
- Enumeration date
- May 31, 2007
- Record updated
- Oct 11, 2024
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RG0100X
License reported: 14761 NV
207RG0100X · Primary
License reported: MD60197486 WA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
21600 Highway 99 Ste 260Edmonds, WA 98026-8049
- Phone
- (425) 774-2650
- Fax
- (425) 774-2643
Mailing address
10921 115TH CT NE APT C201KIRKLAND, WA 980333823
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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