Alexandra Silberstein, PA-C
Physician Assistant · La Jolla, CA
Alexandra Silberstein, PA-C is a physician assistant with a practice address in La Jolla, California, and NPI 1992466130, issued on Jan 9, 2022. Check the license (California PA66378, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alexandra Silberstein
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- PA66378 CA
085009807 IL
Self-reported in NPPES; status is on the state search - Practice location
- 10710 N Torrey Pines RD, La Jolla, CA 92037
- Phone
- (858) 554-8984
- Enumerated
- Jan 9, 2022
- Record last updated
- Jul 22, 2025
- Medicare enrollment
- Enrolled (PECOS I20250805002581); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2023
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 10710 N Torrey Pines RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alexandra Silberstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA66378Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average physician assistant in 2024
215 Medicare Part D claims for 169 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin35 claims
- Amoxicillin-Clavulanate Potass22 claims
- Azithromycin20 claims
- Prednisone17 claims
- Albuterol Sulfate Hfa16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Scripps HealthLa Jolla, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexandra Silberstein among 14,451 physician assistant records in California
Alexandra Silberstein, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 73% of them.
- NPI issued2022 · 73% of these records are older, 20% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2023 · median 2018 among the 7,214 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
136 physician assistant records list a practice address in La Jolla
They are 136 of the 3,648 NPPES records with a practice address in La Jolla, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in La Jolla → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Heather Bonaguidi, P.A.La Jolla, CA 920371669458691
- Abha Bosworth, PALa Jolla, CA 920371629067053
- Daniel Collins, P.A.La Jolla, CA 920371548247158
- Doris Elias, P.A.La Jolla, CA 920371457338089
- Karen Fetzer, P.A.-C.La Jolla, CA 920371063490761
- Susan Gilroy, P.A.-C.La Jolla, CA 920371992783575
- Madonna Guzman, P.A.-C.La Jolla, CA 920371871571455
- Christy Kerr, P.A.-C.La Jolla, CA 920371184602336
Common questions
What is Alexandra Silberstein, PA-C's NPI number?
Alexandra Silberstein, PA-C's National Provider Identifier (NPI) is 1992466130, issued on Jan 9, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Alexandra Silberstein, PA-C located?
The NPPES record lists a practice address at 10710 N Torrey Pines RD, La Jolla, CA, 92037. Phone: (858) 554-8984. Providers update this record themselves, so call before visiting.
How can I verify Alexandra Silberstein, PA-C's license?
NPPES lists California license number PA66378, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Alexandra Silberstein, PA-C prescribe under Medicare Part D?
In 2024, Alexandra Silberstein, PA-C had 215 Medicare Part D claims for 169 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.