Doctor profile · Federal record
Dr. Jason Harper, MD
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Seattle, WA
- NPI 1336305911
- Accepts Medicare
- MIPS 87.0 / 100 · 2023
- 18 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1221 Madison St Ste 1220
Seattle, WA 981041356
(206) 215-4250
fax (206) 215-4252 - Additional location
-
751 Ne Blakely Dr Ste 3020
Issaquah, WA 980296201
(425) 313-5345
fax (425) 313-4704 - Mailing address
-
Po Box 25608
Salt Lake City, UT 841250608
Credentials & registration
- NPI registered
- August 2008 — 18 yrs on file
- Profile last updated
- January 12, 2026
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Washington #MD60238161
- Medicaid
- WA #2018493
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336305911. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
149
Distinct HCPCS
8
Medicare allowed
$22,544
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45380 |
Biopsy of large bowel using a flexible endoscope | 39 | 39 | $138 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 26 | 26 | $270 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 19 | 18 | $154 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 18 | 18 | $102 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 14 | 14 | $117 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 11 | 11 | $194 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 11 | 11 | $139 | |
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 11 | 11 | $5 |
In context: peer comparison
Among 44 peers in Seattle Gastroenterology Physician, average services per provider: 39. This provider delivers 3.8× the peer median.Open Payments
Industry payments received
All-time total
$9,861
Transactions
8
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Scientific Affairs, LLC | 5 | $9,655.97 | |
| Abbvie INC. | 2 | $174.93 | |
| E.R. Squibb & Sons, L.L.C. | 1 | $29.87 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
286
Patients
36
Total drug cost
$1,647,350
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Stelara (Ustekinumab) | Brand | 41 | 0 | $1,027,093 |
| Omeprazole | Generic | 38 | 0 | $356 |
| Mesalamine | Generic | 28 | 0 | $23,240 |
| Humira(Cf) Pen (Adalimumab) | Brand | 26 | 0 | $216,953 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 22 | 20 | $363 |
| Ondansetron Odt (Ondansetron) | Brand | 20 | 0 | $318 |
| Loperamide (Loperamide Hcl) | Brand | 19 | 0 | $1,639 |
| Methotrexate (Methotrexate Sodium) | Brand | 16 | 0 | $547 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 16 | 16 | $1,154 |
| Humira(Cf) (Adalimumab) | Brand | 14 | 0 | $199,792 |
Hospital affiliations
Frequently asked questions
What is Dr. Jason Harper's medical specialty?
Dr. Jason Harper practices Gastroenterology Physician in Seattle, WA.
Where does Dr. Jason Harper practice?
Dr. Jason Harper practices at 1221 Madison St Ste 1220, Seattle, WA 981041356. Office phone: 2062154250.
What is Dr. Jason Harper's NPI?
Dr. Jason Harper's National Provider Identifier (NPI) is 1336305911, issued by NPPES.
Does Dr. Jason Harper accept Medicare assignment?
Yes. Dr. Jason Harper accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jason Harper commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.