Ralph C. Witmer, PHARM.D.
Pharmacist · Mesa, AZ
Ralph C. Witmer, PHARM.D. is a pharmacist with a practice address in Mesa, Arizona, and NPI 1386913804, issued on Dec 29, 2011. Check the license (Arizona S019545, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ralph C. Witmer
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacist 183500000X
- License numbers
- S019545 AZ
41689 TX
RP00006573 NM
Self-reported in NPPES; status is on the state search - Practice location
- 9243 E Baseline RD, Mesa, AZ 85209
- Phone
- (480) 986-4660
- Enumerated
- Dec 29, 2011
- Record last updated
- May 27, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (480) 986-4697
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 6,746 in Arizona → Look up another NPI →
Also registered at 9243 E Baseline RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dylan Altstadt, PHARMDPharmacist1316595721
- Melissa DeppePharmacist1215649603
- Donita GreenPharmacist1467802041
- Peter SchaafPharmacist1609124049
Verify Ralph C. Witmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license S019545Check 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
121 Medicare Part D claims for 110 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.
- Arexvy53 claims
- Shingrix38 claims
- Abrysvo15 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.
Ralph C. Witmer among 6,746 pharmacist records in Arizona
Ralph C. Witmer, PHARM.D. is one of 6,746 pharmacist records with a practice address in Arizona. 27% 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 29% of them.
- NPI issued2011 · 29% of these records are older, 65% newer
- In a Medicare fileYes · 27% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2015 · 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
383 pharmacist records list a practice address in Mesa
They are 383 of the 9,151 NPPES records with a practice address in Mesa, and 6,746 pharmacist records in Arizona.
All 6,746 in Arizona → Every provider in Mesa → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Jesus Arellano, PHARMDMesa, AZ 852091760797138
- Morris Austin, PHARM.DMesa, AZ 852091013229962
- Bryan Cook, RPH, MBAMesa, AZ 852091407183445
- Kevin Dicks, PHARM. D.Mesa, AZ 852091558661637
- Mallory Farah, PHARMDMesa, AZ 852091972759660
- Paul FriedmanMesa, AZ 852091821328071
- Tracy Thao Lin, PHARMDMesa, AZ 852091417188657
- Howard Macdonald, R.PHMesa, AZ 852091710217849
Common questions
What is Ralph C. Witmer, PHARM.D.'s NPI number?
Ralph C. Witmer, PHARM.D.'s National Provider Identifier (NPI) is 1386913804, issued on Dec 29, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Ralph C. Witmer, PHARM.D. located?
The NPPES record lists a practice address at 9243 E Baseline RD, Mesa, AZ, 85209. Phone: (480) 986-4660. Providers update this record themselves, so call before visiting.
How can I verify Ralph C. Witmer, PHARM.D.'s license?
NPPES lists Arizona license number S019545, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Ralph C. Witmer, PHARM.D. prescribe under Medicare Part D?
In 2024, Ralph C. Witmer, PHARM.D. had 121 Medicare Part D claims for 110 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.