Spencer Barrett Tilley, MD
NPI 1710171038ActiveIndividual· Family Medicine· Fremont, CA
Family Medicine (MD) in Fremont, California, trained at University of Arkansas College of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $577,911 for 5,347 claims, against $144,985 paid for services in 2024. Pfizer Inc. reported $17.42 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1710171038 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 29, 2007 |
| Last updated in NPPES | Jul 16, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 104565 | CA |
| Family Medicine | 207Q00000X | 43954 | CO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 383 |
|---|---|
| Services billed | 1,684 across 33 procedure codes |
| Paid by Medicare | $144,985 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,347 · 12,279 30-day fills |
|---|---|
| Patients | 439 |
| Total drug cost | $577,911 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Arkansas College of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Medical Associates of Fremont IncFremont, CA · 3 clinicians
Hospital affiliations
- Stanford Health CareStanford, CA
- Washington HospitalFremont, CA
Other facilities
- Amore Home HealthHome health agency · Fremont, CA
- Healthflex Home Health ServicesHome health agency · Oakland, CA
Industry payments (Open Payments)
- 2025$17.42 · 1 payment from 1 company
- 2024$252.56 · 9 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $17.42 | 1 |
What the 2025 payments were for
- Food and Beverage$17.42 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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