Geriatric Medicine in San Leandro, CA

2 verified geriatric medicine doctors in San Leandro.

Geriatricians provide comprehensive primary and specialty care tailored to older adults.

NPPES tenure ≠ clinical experience. "Years on NPPES" is time since the physician first registered a National Provider Identifier, not time practicing medicine. Verify current license status with the state medical board.

Verify a license at the Medical Board of California

Dr. Willis Gelston, MD

Geriatric Medicine

20 yrs NPPES

NPI 1134188360

13851 E 14TH ST, SUITE 102, San Leandro, CA 94578(510) 351-2100

NPPES public registry

Dr. Douglas Zhang, MD

Geriatric Medicine

20 yrs NPPES

NPI 1023074341

13851 E 14TH ST, San Leandro, CA 94578(510) 351-2100

NPPES public registryAccepts Medicare (2024)

CMS Open Payments· $2,431 (2023)

Industry Payments (2023)

Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.

$2,431

Total received

102

Transactions

Paying companies

Top paying companies

GlaxoSmithKline, LLC.$429.98

Bayer HealthCare Pharmaceuticals Inc.$288.43

Novo Nordisk Inc$241.40

Salix Pharmaceuticals, a division of Bausch Health US, LLC$202.56

Lilly USA, LLC$148.57

Otsuka America Pharmaceutical, Inc.$124.02

Among the 1,695 geriatric medicine doctors we've analyzed, about 29% received any industry payment (median $122 among those who did). This doctor's total is higher than 98% of that group — among the highest recipients.

Benchmark reflects doctors we've analyzed, not all US geriatric medicine doctors.

Payments to Douglas Zhang do not imply any wrongdoing. Many are meals, education, or research support.