Jisun Hahn, M.D.
NPI 1043470628 · Gastroenterology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jisun Hahn, M.D. is a Gastroenterology Physician provider in San Diego, CA (NPI 1043470628).
Provider details
- NPI number
- 1043470628
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- T0799 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 146 | 141 |
| Pantoprazole Sodium | 70 | 41 |
| Peg3350/Sod Sul/Nacl/Kcl/Asb/Cbrand: Peg3350-Sod Sul-Nacl-Kcl-Asb-C | 35 | 34 |
| Mesalamine | 19 | — |
| Lubiprostone | 15 | — |
| Sofosbuvir/Velpatasvirbrand: Sofosbuvir-Velpatasvir | 13 | — |
| Ursodiol | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (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
Registry dates
- Enumerated
- 2008-06-17
- Last updated
- 2023-09-21
- Certified
- 2023-09-21
Frequently asked questions
- What is Jisun Hahn's NPI number?
- Jisun Hahn's National Provider Identifier (NPI) is 1043470628, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jisun Hahn's specialty?
- Jisun Hahn is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jisun Hahn located?
- Jisun Hahn's practice location on file with NPPES is 34800 Bob Wilson Dr, San Diego, CA 92134-1098.
- What is Jisun Hahn's phone number?
- The practice phone number listed in the NPPES registry for Jisun Hahn is (619) 532-8250.
- Does Jisun Hahn accept Medicare?
- Jisun Hahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jisun Hahn's NPI active?
- Yes — Jisun Hahn's NPI (1043470628) is active in the NPPES registry as of the last update on 2023-09-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.