David Liang, M.D.
NPI 1619178027 · Gastroenterology Physician · Edmonds, WA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Liang, M.D. is a Gastroenterology Physician provider in Edmonds, WA (NPI 1619178027).
Provider details
- NPI number
- 1619178027
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 14761 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
6 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
700 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 .
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) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 131 | $83 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 101 | $120 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 80 | $240 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 58 | $78 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 46 | $184 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 287 | 92 |
| Pantoprazole Sodium | 213 | 72 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 98 | 96 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 54 | 53 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 46 | 46 |
| Mesalamine | 43 | 11 |
| Dicyclomine Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$24 across 1 record (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.
Practice location
Mailing address
Additional practice locations (5)
- 4545 Cordata Pkwy Ste 1bBellingham, WA 98226-7264Phone: (360) 752-5216Fax: (360) 752-5656
- 1818 Cole St Fl 1Enumclaw, WA 98022-3504Phone: (360) 802-5023Fax: (360) 802-5039
- 1615 Delaware StLongview, WA 98632-2367Phone: (360) 414-2730Fax: (360) 414-2739
- 1615 Delaware StLongview, WA 98632-2367Phone: (360) 414-2730Fax: (360) 414-2739
- 125 16th Ave ESeattle, WA 98112-5211Phone: (206) 326-3000Fax: (877) 515-2975
Registry dates
- Enumerated
- 2007-05-31
- Last updated
- 2024-10-11
- Certified
- 2024-10-11
Frequently asked questions
- What is David Liang's NPI number?
- David Liang's National Provider Identifier (NPI) is 1619178027, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Liang's specialty?
- David Liang is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is David Liang located?
- David Liang's practice location on file with NPPES is 21600 Highway 99 Ste 260, Edmonds, WA 98026-8049.
- What is David Liang's phone number?
- The practice phone number listed in the NPPES registry for David Liang is (425) 774-2650.
- Does David Liang accept Medicare?
- David Liang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Liang's NPI active?
- Yes — David Liang's NPI (1619178027) is active in the NPPES registry as of the last update on 2024-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.