Les Allen Mershon, PA-C
Medical Physician Assistant · La Mesa, CA
Les Allen Mershon, PA-C is a medical physician assistant with a practice address in La Mesa, California, and NPI 1265723985, issued on Apr 28, 2011. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Les Allen Mershon
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 4845 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 6136 Lake Murray Blvd, La Mesa, CA 91942
- Phone
- (619) 303-5500
- Enumerated
- Apr 28, 2011
- Record last updated
- Jan 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110615000548); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 6136 Lake Murray Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ranya Alexander, M.D.Emergency Medicine Physician1801804943
- Derrick DamasoMedical Physician Assistant1598487035
- Steven Jaeger, M.D.Emergency Medicine Physician1548270564
- Alexandra Kellogg, PA-CPhysician Assistant1477236727
- Hailey Mason, PAPhysician Assistant1932829579
- Michael Otte, PA-CPhysician Assistant1093180432
Verify Les Allen Mershon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average medical physician assistant in 2024
1,058 Medicare Part D claims for 795 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 12 claims were for opioids.
Most prescribed
- Doxycycline Hyclate145 claims
- Cephalexin138 claims
- Amoxicillin-Clavulanate Potass134 claims
- Prednisone118 claims
- Azithromycin92 claims
- Paxlovid42 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
- Truecare Urgent Care LLCLake Havasu City, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Les Allen Mershon among 3,376 medical physician assistant records in California
Les Allen Mershon, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 46% of them.
- NPI issued2011 · 46% of these records are older, 49% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2010 · median 2012 among the 1,347 with a school on file
- Record last updated2020 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in La Mesa → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Cynthia Adams, PA-CLa Mesa, CA 919421447564141
- Patrick Astourian, MS PA-CLa Mesa, CA 919421932294279
- Derrick DamasoLa Mesa, CA 919421598487035
- Abraham Daneshvar, PA-CLa Mesa, CA 919421245359140
- Kevin Delgadillo, PA-CLa Mesa, CA 919421770750978
- Dana Derissi, P.A.-CLa Mesa, CA 919421063829505
- Amy Farabaugh, PA-CLa Mesa, CA 919421477926319
- Tammy Kelly, PA-CLa Mesa, CA 919421215267349
Common questions
What is Les Allen Mershon, PA-C's NPI number?
Les Allen Mershon, PA-C's National Provider Identifier (NPI) is 1265723985, issued on Apr 28, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Les Allen Mershon, PA-C located?
The NPPES record lists a practice address at 6136 Lake Murray Blvd, La Mesa, CA, 91942. Phone: (619) 303-5500. Providers update this record themselves, so call before visiting.
How can I verify Les Allen Mershon, PA-C's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Les Allen Mershon, PA-C prescribe under Medicare Part D?
In 2024, Les Allen Mershon, PA-C had 1,058 Medicare Part D claims for 795 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.