Doctor profile · Federal record
Dr. Won-Seok Jo, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · San Bernardino, CA
- NPI 1245215144
- Accepts Medicare
- 27 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
424 E Vanderbilt Way Ste B
San Bernardino, CA 924083552
(909) 796-0363
fax (909) 255-7292
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- October 17, 2023
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A91260
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1245215144. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
438
Distinct HCPCS
10
Medicare allowed
$67,789
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 78 | 75 | $252 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 65 | 63 | $121 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 55 | 55 | $116 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 47 | 37 | $132 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 46 | 46 | $172 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 41 | 41 | $187 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 37 | 37 | $186 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 34 | 26 | $93 | |
43450 |
Dilation of esophagus | 22 | 22 | $41 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 13 | 13 | $88 |
In context: peer comparison
Among 1 peers in San Bernardino Gastroenterology Physician, average services per provider: 43. This provider delivers 10× the peer median.Open Payments
Industry payments received
All-time total
$1,225
Transactions
65
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, INC. | 15 | $294.72 | |
| Phathom Pharmaceuticals, INC. | 13 | $235.47 | |
| Ardelyx, INC. | 10 | $183.07 | |
| Celgene Corporation | 5 | $83.49 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 4 | $72.99 | |
| Merck Sharp & Dohme LLC | 4 | $67.96 | |
| Genzyme Corporation | 2 | $67.45 | |
| Pfizer INC. | 3 | $62.92 | |
| Janssen Biotech, INC. | 3 | $48.88 | |
| Lilly USA, LLC | 1 | $34.05 | |
| Regeneron Healthcare Solutions, INC. | 1 | $19.20 | |
| Albireo Pharma, INC. | 1 | $14.67 | |
| Abbvie INC. | 1 | $13.60 | |
| Madrigal Pharmaceuticals | 1 | $13.49 | |
| Ferring Pharmaceuticals INC. | 1 | $13.10 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,732
Patients
1,030
Total drug cost
$112,908
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 540 | 506 | $9,229 |
| Omeprazole | Generic | 249 | 75 | $3,136 |
| Famotidine | Generic | 231 | 70 | $3,576 |
| Peg-3350 and Electrolytes (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 161 | 158 | $2,907 |
| Linzess (Linaclotide) | Brand | 110 | 28 | $64,257 |
| Dicyclomine Hcl | Generic | 67 | 18 | $1,345 |
| Sucralfate | Generic | 65 | 26 | $3,446 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 52 | 18 | $4,344 |
| Pantoprazole Sodium | Generic | 44 | 15 | $1,135 |
| Propranolol Hcl | Generic | 40 | 0 | $520 |
Frequently asked questions
What is Dr. Won-Seok Jo's medical specialty?
Dr. Won-Seok Jo practices Gastroenterology Physician in San Bernardino, CA.
Where does Dr. Won-Seok Jo practice?
Dr. Won-Seok Jo practices at 424 E Vanderbilt Way Ste B, San Bernardino, CA 924083552. Office phone: 9097960363.
What is Dr. Won-Seok Jo's NPI?
Dr. Won-Seok Jo's National Provider Identifier (NPI) is 1245215144, issued by NPPES.
Does Dr. Won-Seok Jo accept Medicare assignment?
Yes. Dr. Won-Seok Jo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Won-Seok Jo commonly perform?
Top Medicare-reported procedures in 2023: Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); New patient office or other outpatient visit (HCPCS 99203). Source: CMS Medicare Physician & Other Practitioners file.