Doctor profile · Federal record
Dr. Jisun Hahn, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · San Diego, CA
- NPI 1043470628
- Accepts Medicare
- 18 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
34800 Bob Wilson Dr, Nmcsd
San Diego, CA 921341098
(619) 532-8250 - Mailing address
-
8901 Rockville Pike 9
Bethesda, MD 208890001
Credentials & registration
- NPI registered
- June 2008 — 18 yrs on file
- Profile last updated
- September 21, 2023
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Texas #T0799
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1043470628. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
105
Distinct HCPCS
6
Medicare allowed
$13,075
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45380 |
Biopsy of large bowel using a flexible endoscope | 21 | 21 | $98 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 19 | 19 | $88 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 19 | 19 | $123 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 18 | 18 | $240 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 14 | 14 | $82 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 14 | 14 | $111 |
In context: peer comparison
Among 31 peers in San Diego Gastroenterology Physician, average services per provider: 52. This provider delivers 2.0× the peer median.Open Payments
Industry payments received
All-time total
$19
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Renalytix Ai, INC. | 1 | $18.82 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
283
Patients
141
Total drug cost
$8,529
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 152 | 69 | $2,911 |
| Omeprazole | Generic | 42 | 18 | $664 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 23 | 22 | $402 |
| Gavilyte-C (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 20 | 20 | $452 |
| Sucralfate | Generic | 19 | 0 | $2,485 |
| Esomeprazole Magnesium | Generic | 14 | 0 | $594 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 13 | 12 | $1,022 |
Frequently asked questions
What is Dr. Jisun Hahn's medical specialty?
Dr. Jisun Hahn practices Gastroenterology Physician in San Diego, CA.
Where does Dr. Jisun Hahn practice?
Dr. Jisun Hahn practices at 34800 Bob Wilson Dr, San Diego, CA 921341098. Office phone: 6195328250.
What is Dr. Jisun Hahn's NPI?
Dr. Jisun Hahn's National Provider Identifier (NPI) is 1043470628, issued by NPPES.
Does Dr. Jisun Hahn accept Medicare assignment?
Yes. Dr. Jisun Hahn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jisun Hahn commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.