Quick answers
- Which hospitals does Donna Walker work at?
- Medicare's official clinician data lists Donna Walker at 3 hospitals: Lompoc Valley Medical Center, Marian Regional Medical Center and Santa Ynez Valley Cottage Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Donna Walker see patients?
- Medicare's clinician data lists 2 practice locations, including Lompoc, CA. Call before your visit to confirm the address.
- What is Donna Walker's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Donna Walker accept Medicare assignment?
- Yes. Medicare's clinician data says Donna Walker accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Donna Walker offer telehealth?
- Medicare's clinician data says Donna Walker offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Donna Walker?
- (805) 735-1155, as listed in official Medicare / NPI Registry data.
- What is Donna Walker's NPI number?
- 1528086964. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Donna Walker works
Medicare's Facility Affiliation Data lists Donna Walker at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Lompoc Valley Medical CenterLompoc, CA · Acute Care Hospital · CCN 050110
- Marian Regional Medical CenterSanta Maria, CA · Acute Care Hospital · CCN 050107
- Santa Ynez Valley Cottage HospitalSolvang, CA · Critical Access Hospital · CCN 051331
Practice locations
Addresses where Donna Walker is enrolled with Medicare (CMS data updated 2026-10-02).
- 1213 E Ocean Ave, Suite 102Lompoc, CA 93436 (805) 735‑1155
- 1225 N H StLompoc, CA 93436 (805) 737‑8700
Group practices
Medicare enrollment lists Donna Walker as a member of this group (CMS data updated 2026-10-02).
- Lompoc Valley Medical Center91 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 1994 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1528086964 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians