Cynthia Ashbrook
NPI 1386786408ActiveIndividual· Allergy & Immunology· Walnut Creek, CA
Allergy & Immunology in Walnut Creek, California, trained at University of South Carolina School of Medicine (class of 1987). Mostly services rather than prescriptions: Medicare paid $3,682 for 43 patients in 2024, with only 41 Part D claims.
Overview
| NPI | 1386786408 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Feb 13, 2007 |
| Last updated in NPPES | May 9, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | G63996 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 43 |
|---|---|
| Services billed | 75 across 23 procedure codes |
| Paid by Medicare | $3,682 |
Part D prescriptions in 2024
| Prescriptions (claims) | 41 · 43 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $3,471 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of South Carolina School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Family Practice |
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
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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