Alexandra Walker, DNP, APRN, FNP-C
NPI 1578220612 · Family Nurse Practitioner · San Marcos, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexandra Walker, DNP, APRN, FNP-C is a Family Nurse Practitioner provider in San Marcos, CA (NPI 1578220612).
Provider details
- NPI number
- 1578220612
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, APRN, FNP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 1059129 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
4 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 31 | 24 |
| Cephalexin | 25 | 25 |
| Doxycycline Hyclate | 22 | 21 |
| Ibuprofen | 22 | 21 |
| Levocetirizine Dihydrochloride | 18 | 14 |
| Fluticasone Propionate | 17 | 11 |
| Prednisone | 14 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$186 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-11-23
- Last updated
- 2024-11-13
- Certified
- 2024-11-13
Frequently asked questions
- What is Alexandra Walker's NPI number?
- Alexandra Walker's National Provider Identifier (NPI) is 1578220612, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexandra Walker's specialty?
- Alexandra Walker is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Alexandra Walker located?
- Alexandra Walker's practice location on file with NPPES is 150 Valpreda Rd, San Marcos, CA 92069-2973.
- What is Alexandra Walker's phone number?
- The practice phone number listed in the NPPES registry for Alexandra Walker is (760) 736-6780.
- Does Alexandra Walker accept Medicare?
- Alexandra Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexandra Walker's NPI active?
- Yes — Alexandra Walker's NPI (1578220612) is active in the NPPES registry as of the last update on 2024-11-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.