Doctor profile · Federal record
Dr. REX CHENG, M.D.
Gastroenterology Physician (CMS: GASTROENTEROLOGY) · Transplant Hepatology Physician · SEATTLE, WA
- NPI 1689998874
- Accepts Medicare
- 16 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
1101 MADISON ST STE 301
SEATTLE, WA 981043599
(206) 505-1300 - Additional location
-
1909 214th St SE Ste 300
Bothell, WA 980214418
(425) 412-7200
fax (425) 412-7350 - Additional location
-
1959 NE Pacific St
Seattle, WA 981954409
(206) 598-4377 - Mailing address
-
PO BOX 50095
SEATTLE, WA 981455095
Credentials & registration
- NPI registered
- March 2010 — 16 yrs on file
- Profile last updated
- April 16, 2021
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Washington #MD60579501
- Medicaid
- WA #1689998874
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1689998874. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
197
Distinct HCPCS
5
Medicare allowed
$32,414
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 64 | 64 | $264 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 45 | 45 | $165 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 42 | 36 | $129 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 27 | 27 | $80 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 19 | 19 | $27 |
In context: peer comparison
Among 44 peers in this city , average services per provider: 39. This provider delivers 5.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
706
Patients
323
Total drug cost
$48,728
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 163 | 41 | $2,705 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 151 | 147 | $2,431 |
| Pantoprazole Sodium | Generic | 110 | 35 | $2,001 |
| Dicyclomine Hcl | Generic | 45 | 17 | $445 |
| Nortriptyline Hcl | Generic | 41 | 14 | $303 |
| Gavilyte-C (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 26 | 26 | $447 |
| Peg-3350 And Electrolytes (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 24 | 24 | $433 |
| Famotidine | Generic | 23 | 0 | $707 |
| Vemlidy (Tenofovir Alafenamide) | Brand | 22 | 0 | $34,309 |
| Buspirone Hcl | Generic | 19 | 0 | $136 |