Pacita R. Aducayen, M.D.
NPI 1851307219ActiveIndividual· Internal Medicine· Pittsburg, CA
Internal Medicine (M.D.) in Pittsburg, California, licensed in CA, with an NPI issued in July 2006. Their prescriptions cost Medicare Part D more than their services did: $1,077,186 for 10,494 claims, against $101,530 paid for services in 2024. Lilly USA, LLC was the largest of 16 companies reporting payments in 2025, $1,113 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1851307219 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 31, 2006 |
| Last updated in NPPES | Oct 13, 2023 |
| Certified by provider | Oct 13, 2023 |
| Reactivated | Jan 15, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A049795 | 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 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 270 |
|---|---|
| Services billed | 1,127 across 24 procedure codes |
| Paid by Medicare | $101,530 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,494 · 23,090 30-day fills |
|---|---|
| Patients | 663 |
| Total drug cost | $1,077,186 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Sutter Delta Medical CenterAntioch, CA
Other facilities
- Amavi Home Health and Hospice Care Services, Inc.Home health agency · Brentwood, CA
- Home Health of St Camillus LLCHome health agency · Antioch, CA
- Jmj Home Health ServicesHome health agency · Brentwood, CA
- John Muir Home Health ServicesHome health agency · Concord, CA
- One Health Home Care, IncHome health agency · Livermore, CA
- Amavi Home Health and Hospice Care Services, IncHospice · Brentwood, CA
- Caring Heart Hospice IncHospice · Brentwood, CA
- Diablo Valley Post AcuteNursing home · Concord, CA
Industry payments (Open Payments)
- 2025$1,113 · 52 payments from 16 companies
- 2024$1,211 · 56 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $280.50 | 12 |
| Astrazeneca Pharmaceuticals LP | $216.61 | 13 |
| Novo Nordisk Inc | $144.86 | 5 |
| Pfizer Inc. | $86.83 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $64.49 | 3 |
What the 2025 payments were for
- Food and Beverage$1,113 · 52 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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