Mark Edwin Williams, PA-C
Medical Physician Assistant · Berlin, MD
Mark Edwin Williams, PA-C is a medical physician assistant with a practice address in Berlin, Maryland, and NPI 1861649642, issued on Aug 22, 2008. Check the license (Maryland C0003723, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Edwin Williams
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- C0003723 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9714 Healthway Dr # Drl, Berlin, MD 21811
- Phone
- (410) 641-3340
- Enumerated
- Aug 22, 2008
- Record last updated
- Sep 7, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20250807001679); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 871 in Maryland → Look up another NPI →
Verify Mark Edwin 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 C0003723Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average medical physician assistant in 2024
212 Medicare Part D claims for 164 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Cephalexin24 claims
- Prednisone17 claims
- Hydrocodone-Acetaminophen16 claims
- Ibuprofen12 claims
- Methocarbamol11 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.
Mark Edwin Williams among 871 medical physician assistant records in Maryland
Mark Edwin Williams, PA-C is one of 871 medical physician assistant records with a practice address in Maryland. 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 2008, is newer than 34% of them.
- NPI issued2008 · 34% of these records are older, 59% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2006 · median 2012 among the 469 with a school on file
- Record last updated2011 · 63% 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 Maryland 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 Maryland
There are 871 medical physician assistant records in Maryland.
All 871 in Maryland → Every provider in Berlin → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Alison Diesel, PA-CBerlin, MD 218111871987818
- Craig Johnson, PA-CBerlin, MD 218111306021753
- Meghan East, PA-CSalisbury, MD 218041770764029
- Erin Failaev, PA-CSalisbury, MD 218041649695016
- Sarah Fisher, P.A.Salisbury, MD 218041588891030
- Angela Korb, MS, PA-CSalisbury, MD 218041407251259
- Diane Learn, PASalisbury, MD 218041114077096
- Vincent Lewis, PA-CSalisbury, MD 218041275791147
Common questions
What is Mark Edwin Williams, PA-C's NPI number?
Mark Edwin Williams, PA-C's National Provider Identifier (NPI) is 1861649642, issued on Aug 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mark Edwin Williams, PA-C located?
The NPPES record lists a practice address at 9714 Healthway Dr # Drl, Berlin, MD, 21811. Phone: (410) 641-3340. Providers update this record themselves, so call before visiting.
How can I verify Mark Edwin Williams, PA-C's license?
NPPES lists Maryland license number C0003723, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Edwin Williams, PA-C prescribe under Medicare Part D?
In 2024, Mark Edwin Williams, PA-C had 212 Medicare Part D claims for 164 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.