Ryan Kerstan, R.PH
Pharmacist · Pewaukee, WI
Ryan Kerstan, R.PH is a pharmacist with a practice address in Pewaukee, Wisconsin, and NPI 1689045007, issued on Oct 12, 2015. Check the license (Wisconsin 18094-40, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ryan Kerstan
- Credential
- R.PH
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 18094-40 WI
Self-reported in NPPES; status is on the state search - Practice location
- 443 Pewaukee RD, Pewaukee, WI 53072
- Phone
- (262) 956-6701
- Enumerated
- Oct 12, 2015
- Entity
- Type 1 · individual
Also registered at 443 Pewaukee RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bartlomiej Celer, ODOptometrist1790459758
- Edward Manteufel, RPHPharmacist1528666336
- Marie Schackmuth, PHARMDPharmacist1275364606
Verify Ryan Kerstan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 18094-40Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
90% fewer Medicare Part D claims than the average pharmacist in 2024
13 Medicare Part D claims for 12 beneficiaries, against an average of 127 among the 28,933 providers of this specialty who prescribed in Part D. Brand-name drugs were 92% of 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.
21 pharmacist records list a Pewaukee practice address
They are 21 of the 413 NPPES records with a Pewaukee practice address, and 5,403 pharmacist records in Wisconsin.
All 21 in Pewaukee → All 5,403 in Wisconsin → Every provider in Pewaukee →
Other pharmacist records in Wisconsin
- Shameem Aadam, RPHMilwaukee, WI1760755680
- Shervin AbbasiMilwaukee, WI1225823925
- Salma Abdelaal, RPH., PHD.Madison, WI1013222520
- Omnya AbdelrahmanWest Allis, WI1386405983
- Jenny Aberger, RPHLa Crosse, WI1487992707
- Dillon Abhold, PHARMDPlymouth, WI1538892575
- Ahmed Abou Mohamed, RPHMilwaukee, WI1588289813
- Rasha Abou-RomiaWest Allis, WI1861899254
- Aya AboualaywiMadison, WI1639916943
- Marwa Aboulsaoud, RPHBrookfield, WI1992634588
Common questions
What is Ryan Kerstan, R.PH's NPI number?
Ryan Kerstan, R.PH's National Provider Identifier (NPI) is 1689045007, issued on Oct 12, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Kerstan, R.PH located?
The NPPES record lists a practice address at 443 Pewaukee RD, Pewaukee, WI, 53072. Phone: (262) 956-6701. Providers update this record themselves, so call before visiting.
How can I verify Ryan Kerstan, R.PH's license?
NPPES lists Wisconsin license number 18094-40, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Ryan Kerstan, R.PH prescribe under Medicare Part D?
In 2024, Ryan Kerstan, R.PH had 13 Medicare Part D claims for 12 beneficiaries; the average among pharmacist prescribers was 127. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.