Darcie Lynn Ghigiarelli, FNP
NPI 1164093753ActiveIndividual· Nurse Practitioner, Family· Walnut Creek, CA
Nurse Practitioner, Family (FNP) with John Muir Physician Network, practicing in Walnut Creek, California. In 2024 Medicare paid $40,131 for 313 patients, and Part D covered 374 of their prescriptions, 87% of them generic. Lilly USA, LLC was the largest of 8 companies reporting payments in 2025, $390.63 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1164093753 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP |
| Sole proprietor | Yes |
| NPI issued | Jul 6, 2021 |
| Last updated in NPPES | May 17, 2023 |
| Certified by provider | May 17, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 95019760 | CA |
| Registered Nurse, General Practice | 163WG0000X | 852128 | 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 - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 313 |
|---|---|
| Services billed | 425 across 16 procedure codes |
| Paid by Medicare | $40,131 |
Part D prescriptions in 2024
| Prescriptions (claims) | 374 · 498 30-day fills |
|---|---|
| Patients | 167 |
| Total drug cost | $21,625 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- San Ramon Regional Medical CenterSan Ramon, CA
Other facilities
- John Muir Home Health ServicesHome health agency · Concord, CA
Industry payments (Open Payments)
- 2025$390.63 · 19 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $131.08 | 8 |
| Astrazeneca Pharmaceuticals LP | $86.92 | 3 |
| Exact Sciences Corporation | $44.23 | 2 |
| Pfizer Inc. | $33.73 | 2 |
| Merck Sharp & Dohme LLC | $28.79 | 1 |
What the 2025 payments were for
- Food and Beverage$390.63 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 110 family nurse practitioners in Walnut Creek · All family nurse practitioners in California