Jeffrey Luk, M.D.
NPI 1255742730 · Gastroenterology Physician · Kirkland, WA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Luk, M.D. is a Gastroenterology Physician provider in Kirkland, WA (NPI 1255742730).
Provider details
- NPI number
- 1255742730
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
220 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 73 | $141 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 50 | $152 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 36 | $106 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 25 | $257 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $96 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 132 | 38 |
| Pantoprazole Sodium | 96 | 24 |
| Famotidine | 52 | — |
| Colestipol Hcl | 30 | — |
| Linaclotidebrand: Linzess | 20 | — |
| Balsalazide Disodium | 19 | — |
| Colesevelam Hcl | 17 | — |
| Lipase/Protease/Amylase |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$673 across 26 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.
Practice location
Mailing address
Additional practice locations (1)
- 20 York StNew Haven, CT 06510-3220Phone: (203) 688-4242
Registry dates
- Enumerated
- 2014-05-19
- Last updated
- 2020-10-20
- Certified
- 2020-10-20
Frequently asked questions
- What is Jeffrey Luk's NPI number?
- Jeffrey Luk's National Provider Identifier (NPI) is 1255742730, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Luk's specialty?
- Jeffrey Luk is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Luk located?
- Jeffrey Luk's practice location on file with NPPES is 11800 Ne 128th St Ste 100, Kirkland, WA 98034-7208.
- What is Jeffrey Luk's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Luk is (425) 899-4500.
- Does Jeffrey Luk accept Medicare?
- Jeffrey Luk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Luk's NPI active?
- Yes — Jeffrey Luk's NPI (1255742730) is active in the NPPES registry as of the last update on 2020-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.