John Clifton Mattern, PHARM.D.
Pharmacist · Portage, WI
John Clifton Mattern, PHARM.D. is a pharmacist with a practice address in Portage, Wisconsin, and NPI 1598582082, issued on Sep 25, 2024. Check the license (Wisconsin 12821, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Clifton Mattern
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 12821 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2700 New Pinery RD, Portage, WI 53901
- Phone
- (608) 742-5727
- Enumerated
- Sep 25, 2024
- Record last updated
- Sep 25, 2024
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 5,397 in Wisconsin → Look up another NPI →
Also registered at 2700 New Pinery RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Randy Griffiths, PHARM D.Pharmacist1356626444
- Jeffrey Hebl, R.PHPharmacist1770868846
- David Jacobson, PHARMDPharmacist1194000232
- Daniel Moore, PHARMDPharmacist1619301652
- Jesse WeberPharmacist1730713199
- Tiffanie Wright, PHARMDPharmacist1154692291
Verify John Clifton Mattern in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 12821Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 100% of the cost of the top drugs
36 Medicare Part D claims for 34 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Shingrix12 claims
- Abrysvo11 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.
John Clifton Mattern among 5,397 pharmacist records in Wisconsin
John Clifton Mattern, PHARM.D. is one of 5,397 pharmacist records with a practice address in Wisconsin. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 91% of them.
- NPI issued2024 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2024 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 pharmacist records list a practice address in Portage
They are 14 of the 343 NPPES records with a practice address in Portage, and 5,397 pharmacist records in Wisconsin.
All 5,397 in Wisconsin → Every provider in Portage → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Mark Frederiksen, R.PH.Portage, WI 539011043565526
- Randy Griffiths, PHARM D.Portage, WI 539011356626444
- Jeffrey Hebl, R.PHPortage, WI 539011770868846
- David Jacobson, PHARMDPortage, WI 539011194000232
- Ciaran KellyPortage, WI 539011326647272
- Madison Lee, PHARMDPortage, WI 539011013794361
- Kashea Lyfoung, PHARM.D.Portage, WI 539011538425525
- Daniel Moore, PHARMDPortage, WI 539011619301652
Common questions
What is John Clifton Mattern, PHARM.D.'s NPI number?
John Clifton Mattern, PHARM.D.'s National Provider Identifier (NPI) is 1598582082, issued on Sep 25, 2024. An NPI identifies a provider in billing; it is not a license.
Where is John Clifton Mattern, PHARM.D. located?
The NPPES record lists a practice address at 2700 New Pinery RD, Portage, WI, 53901. Phone: (608) 742-5727. Providers update this record themselves, so call before visiting.
How can I verify John Clifton Mattern, PHARM.D.'s license?
NPPES lists Wisconsin license number 12821, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does John Clifton Mattern, PHARM.D. prescribe under Medicare Part D?
In 2024, John Clifton Mattern, PHARM.D. had 36 Medicare Part D claims for 34 beneficiaries; the average among pharmacist prescribers was 119. 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.