Kari Lynn Westenhaver, R.N.
Nurse Practitioner · San Marcos, CA
Kari Lynn Westenhaver, R.N. is a nurse practitioner with a practice address in San Marcos, California, and NPI 1366887010, issued on May 8, 2013. Check the license (California 95003444, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kari Lynn Westenhaver
- Credential
- R.N.
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 95003444 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1706 Descanso Ave, San Marcos, CA 92078
- Phone
- (760) 685-7888
- Enumerated
- May 8, 2013
- Record last updated
- Sep 7, 2023
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 1706 Descanso Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Allyson McGunagle, RDRegistered Dietitian1821764598
Verify Kari Lynn Westenhaver in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95003444Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.3 times the Medicare Part D claims of the average nurse practitioner in 2024
5,856 Medicare Part D claims for 195 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 90 claims were for opioids.
Most prescribed
- Gabapentin398 claims
- Amlodipine Besylate225 claims
- Atorvastatin Calcium197 claims
- Furosemide192 claims
- Levothyroxine Sodium168 claims
- Rosuvastatin Calcium164 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.
Kari Lynn Westenhaver among 8,223 nurse practitioner records in California
Kari Lynn Westenhaver, R.N. is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 39% of them.
- NPI issued2013 · 39% of these records are older, 58% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 42% of these records are
- Record last updated2023 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 nurse practitioner records list a practice address in San Marcos
They are 19 of the 1,985 NPPES records with a practice address in San Marcos, and 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in San Marcos → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Kelly CharlesSan Marcos, CA 920781932970290
- Crystal Limonta, MSN, FNP, RNSan Marcos, CA 920781720687932
- Ilda Llamas, RNSan Marcos, CA 920781770320152
- Raquel McCarthy, NPSan Marcos, CA 920781659971729
- Theodore Scott, RN, MSN, FNP-C, DCNPSan Marcos, CA 920781871599548
- Gretchen De Ausen Santos, MSN, NP-CVista, CA 920811831866516
- Clarisse Mackay, FNP-CVista, CA 920811235992736
- Maria Rojas-Cooley, RNPVista, CA 920811902105398
Common questions
What is Kari Lynn Westenhaver, R.N.'s NPI number?
Kari Lynn Westenhaver, R.N.'s National Provider Identifier (NPI) is 1366887010, issued on May 8, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Kari Lynn Westenhaver, R.N. located?
The NPPES record lists a practice address at 1706 Descanso Ave, San Marcos, CA, 92078. Phone: (760) 685-7888. Providers update this record themselves, so call before visiting.
How can I verify Kari Lynn Westenhaver, R.N.'s license?
NPPES lists California license number 95003444, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kari Lynn Westenhaver, R.N. prescribe under Medicare Part D?
In 2024, Kari Lynn Westenhaver, R.N. had 5,856 Medicare Part D claims for 195 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.