Lauren Shin Hiyama, M.D.
NPI 1215025275ActiveIndividual· Allergy & Immunology· Fresno, CA
Allergy & Immunology (M.D.) in Fresno, California, trained at University of Southern California Keck School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $432,747 for 2,111 claims, against $198,894 paid for services in 2024. Biocryst US Sales Co., LLC was the largest of 16 companies reporting payments in 2025, $1,369 in all, mostly food and beverage.
Overview
| NPI | 1215025275 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 11, 2006 |
| Last updated in NPPES | Jun 23, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | A84500 | CA |
| Internal Medicine | 207R00000X | A84500 | CA |
| Internal Medicine, Allergy & Immunology | 207RA0201X | A84500 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Allergy/Immunology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 530 |
|---|---|
| Services billed | 13,811 across 32 procedure codes |
| Paid by Medicare | $198,894 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,111 · 2,993 30-day fills |
|---|---|
| Patients | 478 |
| Total drug cost | $432,747 |
| Generic share | 70% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Internal Medicine |
Medical groups
- Community Foundation Medical GroupFresno, CA · 283 clinicians
- Baz Allergy Asthma and Sinus Center IncMerced, CA · 23 clinicians
Hospital affiliations
- Community Regional Medical CenterFresno, CA
- Kaweah Health Medical CenterVisalia, CA
- Saint Agnes Medical CenterFresno, CA
Industry payments (Open Payments)
- 2025$1,369 · 66 payments from 16 companies
- 2024$1,103 · 69 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biocryst US Sales Co., LLC | $290.71 | 10 |
| Regeneron Healthcare Solutions, Inc. | $222.73 | 10 |
| Csl Behring | $180.44 | 17 |
| Novartis Pharmaceuticals Corporation | $111.81 | 5 |
| Amgen Inc. | $96.13 | 4 |
What the 2025 payments were for
- Food and Beverage$1,250 · 64 payments
- Education$118.99 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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