Jason Harper, MD
NPI 1336305911 · Gastroenterology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Harper, MD is a Gastroenterology Physician provider in Seattle, WA (NPI 1336305911).
Provider details
- NPI number
- 1336305911
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD60238161 (WA)
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
17 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
181 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 36 | $18 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 29 | $136 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $158 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 20 | $277 |
| Diagnostic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43235 | 17 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Upadacitinibbrand: Rinvoq | 47 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 36 | 35 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 33 | 29 |
| Omeprazole | 32 | — |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 32 | 29 |
| Loperamide Hclbrand: Loperamide | 24 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$9,861 across 8 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)
- 751 Ne Blakely Dr Ste 3020Issaquah, WA 98029-6201Phone: (425) 313-5345Fax: (425) 313-4704
Registry dates
- Enumerated
- 2008-08-02
- Last updated
- 2026-01-12
- Certified
- 2026-01-12
Frequently asked questions
- What is Jason Harper's NPI number?
- Jason Harper's National Provider Identifier (NPI) is 1336305911, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Harper's specialty?
- Jason Harper is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Harper located?
- Jason Harper's practice location on file with NPPES is 1221 Madison St Ste 1220, Seattle, WA 98104-1356.
- What is Jason Harper's phone number?
- The practice phone number listed in the NPPES registry for Jason Harper is (206) 215-4250.
- Does Jason Harper accept Medicare?
- Jason Harper is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Harper's NPI active?
- Yes — Jason Harper's NPI (1336305911) is active in the NPPES registry as of the last update on 2026-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.