Dr. Donna Walker, M.D.
Dr. Donna Walker is a Hematology & Oncology Physician provider (Internal Medicine) practicing in Lompoc, CA, registered in the NPPES registry with NPI 1528086964 since 2006. The credential MD stands for Doctor of Medicine. Practices at Mid-County Hematology and Oncology, A Professional Medical Corporation (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1528086964 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Donna Walker |
| Credential | M.D. |
| Sex | Female |
| Practice address | 1201 E OCEAN AVE STE B, Lompoc, CA, 93436 |
| Phone | 8057351155 |
| Fax | 8057351133 |
| Enumeration date | 2006-07-17 |
| Last updated in NPPES | 2016-05-12 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207RH0003X | Hematology & Oncology Physician | Primary | A55693 | CA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00A556930 | Medicaid | CA | — |
Copy-ready billing details
Provider: Donna Walker, M.D. NPI: 1528086964 Taxonomy: 207RH0003X (Hematology & Oncology Physician) Address: 1201 E OCEAN AVE STE B, Lompoc, CA, 93436
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1285959817 | Mid-County Hematology and Oncology, A Professional Medical Corporation | Organization | Hematology & Oncology Physician | Lompoc, CA |
Verify this record
Cross-check NPI 1528086964 against the authoritative CMS record: view Dr. Donna Walker on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-05-12.