Vannarith So, MD, MPH
NPI 1659416584ActiveIndividual· Internal Medicine· Long Beach, CA
Internal Medicine (MD, MPH) in Long Beach, California, trained at Tufts University School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $1,295,125 for 15,556 claims, against $536,654 paid for services in 2024. Ucb, Inc. was the largest of 3 companies reporting payments in 2025, $159.25 in all, mostly food and beverage.
Overview
| NPI | 1659416584 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MPH |
| Sole proprietor | No |
| NPI issued | Feb 20, 2007 |
| Last updated in NPPES | Jan 9, 2020 |
| Certified by provider | Jan 9, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A85885 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 830 |
|---|---|
| Services billed | 25,854 across 47 procedure codes |
| Paid by Medicare | $536,654 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15,556 · 28,652 30-day fills |
|---|---|
| Patients | 766 |
| Total drug cost | $1,295,125 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Prohealth Partners, A Medical GroupLong Beach, CA · 239 clinicians
Hospital affiliations
- Catalina Island Medical CenterAvalon, CA
- Memorialcare Long Beach Medical CenterLong Beach, CA
- St Mary Medical CenterLong Beach, CA
- Uci Health-OrangeOrange, CA
Other facilities
- Emc Home Health Providers, IncHome health agency · La Palma, CA
- Good Choice Home Health, IncHome health agency · Burbank, CA
- Grace Home Health CareHome health agency · Long Beach, CA
- Legacy Home Health, IncHome health agency · Rancho Cucamonga, CA
- Omnicare Home Health, IncHome health agency · Torrance, CA
- Vitas Healthcare Corporation of CaliforniaHospice · Torrance, CA
- Alamitos Belmont Health and RehabilitationNursing home · Long Beach, CA
- Colonial Care CenterNursing home · Long Beach, CA
- Courtyard Care CenterNursing home · Signal Hill, CA
- Ocean Ridge Post AcuteNursing home · Long Beach, CA
- Shoreline Healthcare CenterNursing home · Long Beach, CA
Industry payments (Open Payments)
- 2025$159.25 · 4 payments from 3 companies
- 2024$38.37 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ucb, Inc. | $96.37 | 2 |
| Teva Pharmaceuticals USA, Inc. | $37.75 | 1 |
| Neurocrine Biosciences, Inc. | $25.13 | 1 |
What the 2025 payments were for
- Food and Beverage$159.25 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 298 internal medicine physicians in Long Beach · All internal medicine physicians in California