Mary Williams, PHARMD
Pharmacist · Perryville, MD
Mary Williams, PHARMD is a pharmacist with a practice address in Perryville, Maryland, and NPI 1164894556, issued on Oct 23, 2015. Check the license (Maryland 21864, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Williams
- Credential
- PHARMD
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 21864 MD
Self-reported in NPPES; status is on the state search - Practice location
- 5319 Pulaski Hwy, Perryville, MD 21903
- Phone
- (410) 642-0003
- Enumerated
- Oct 23, 2015
- Entity
- Type 1 · individual
Also registered at 5319 Pulaski Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sheri Haupt, RPHPharmacist1043594641
- Ian Ponen, PHARMDPharmacist1356625313
- Aubry Tollenger, PHARMDPharmacist1811240500
- Shannan Young, PHARMDPharmacist1760811566
Verify Mary Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 21864Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
83% fewer Medicare Part D claims than the average pharmacist in 2024
22 Medicare Part D claims for 16 beneficiaries, against an average of 127 among the 28,933 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
- Shingrix16 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.
6 pharmacist records list a Perryville practice address
They are 6 of the 43 NPPES records with a Perryville practice address, and 5,581 pharmacist records in Maryland.
All 6 in Perryville → All 5,581 in Maryland → Every provider in Perryville →
Other pharmacist records in Maryland
- Nesriya Ababiya, PHARMDColumbia, MD1306362736
- Bernadette Abadejos, RPHSilver Spring, MD1477155406
- Kwasi AbankwahEllicott City, MD1982206322
- Nolawit AbaseranPikesville, MD1609446715
- Edom AbateSilver Spring, MD1598525313
- Tufa Abate, PHARMDKensington, MD1386044246
- Lanre AbayomiLaurel, MD1265958367
- Oluremi Abayomi, PHARM DUpper Marlboro, MD1699144378
- Oluwatosin Abayomi, PHARMDRockville, MD1558840405
- Irina AbazyanDistrict Heights, MD1952763765
Common questions
What is Mary Williams, PHARMD's NPI number?
Mary Williams, PHARMD's National Provider Identifier (NPI) is 1164894556, issued on Oct 23, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mary Williams, PHARMD located?
The NPPES record lists a practice address at 5319 Pulaski Hwy, Perryville, MD, 21903. Phone: (410) 642-0003. Providers update this record themselves, so call before visiting.
How can I verify Mary Williams, PHARMD's license?
NPPES lists Maryland license number 21864, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Williams, PHARMD prescribe under Medicare Part D?
In 2024, Mary Williams, PHARMD had 22 Medicare Part D claims for 16 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.