NPPES file of Aug 9, 2026

John Mershon, PA-C

Medical Physician Assistant · Jensen Beach, FL

John Mershon, PA-C is a medical physician assistant with a practice address in Jensen Beach, Florida, and NPI 1639541444, issued on Oct 20, 2015. Check the license on the Florida health license search; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639541444
Name
John Mershon
Credential
PA-C
Primary taxonomy
Medical Physician Assistant 363AM0700X
License number
0010-12014 NC
Self-reported in NPPES; status is on the state search
Practice location
3405 NW Federal Hwy, Jensen Beach, FL 34957
Phone
(772) 692-8082
Enumerated
Oct 20, 2015
Record last updated
May 8, 2024
Medicare enrollment
Enrolled (PECOS I20220316000810); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 3405 NW Federal Hwy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jonathan Adelberg, M.D.Emergency Medicine Physician1225024417
  2. Catherine DentPhysician Assistant1710486915
  3. Joseph Karram, PA-CPhysician Assistant1639642507
  4. David Pavcik, ARNP FNP BCFamily Nurse Practitioner1013390798
  5. Amanda WalrathFamily Nurse Practitioner1912485103

Verify John Mershon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license searchCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Florida license search

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80% fewer Medicare Part D claims than the average medical physician assistant in 2024

227 Medicare Part D claims for 160 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 37 claims were for opioids.

  1. John Mershon227
  2. Specialty average1,148

Most prescribed

  1. Cephalexin24 claims
  2. Oxycodone-Acetaminophen18 claims
  3. Ondansetron Odt16 claims
  4. Hydrocodone-Acetaminophen13 claims
  5. Cefpodoxime Proxetil12 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

  1. Wake Emergency Physicians PACary, NC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

John Mershon among 2,776 medical physician assistant records in Florida

John Mershon, PA-C is one of 2,776 medical physician assistant records with a practice address in Florida. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 61% of them.

  • NPI issued2015 · 61% of these records are older, 34% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 46% of these records are
  • Graduated2015 · median 2013 among the 1,278 with a school on file
  • Record last updated2024 · 52% 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 Florida 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 Florida

There are 2,776 medical physician assistant records in Florida.

The 8 medical physician assistant records with the nearest ZIP codes

  1. S0nia Bennett, MDPort St Lucie, FL 349521942018742
  2. Jennifer Brody, PA-CPort St Lucie, FL 349521932561768
  3. Karen DyerPort St Lucie, FL 349521447296132
  4. Penelope Freseman, PA-CPort Saint Lucie, FL 349521366426124
  5. Joseph Howard, PAPort Saint Lucie, FL 349521215959739
  6. Danielle Dean, PHYSICIAN ASSTFort Pierce, FL 349501669565693
  7. Jean Dossous, MD.Fort Pierce, FL 349501083931901
  8. Heather Howard, PAFort Pierce, FL 349501780690891

Common questions

What is John Mershon, PA-C's NPI number?

John Mershon, PA-C's National Provider Identifier (NPI) is 1639541444, issued on Oct 20, 2015. An NPI identifies a provider in billing; it is not a license.

Where is John Mershon, PA-C located?

The NPPES record lists a practice address at 3405 NW Federal Hwy, Jensen Beach, FL, 34957. Phone: (772) 692-8082. Providers update this record themselves, so call before visiting.

How can I verify John Mershon, PA-C's license?

Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does John Mershon, PA-C prescribe under Medicare Part D?

In 2024, John Mershon, PA-C had 227 Medicare Part D claims for 160 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.