Mr. Mark Williams PA-C
About this NPIWhat this record shows.
NPI 1861649642 is registered to Mr. Mark Williams PA-C, a Medical Physician Assistant practising at 9714 Healthway Dr # Drl in Berlin, Maryland. Medical Physician Assistant is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Mr. Mark Williams PA-C has been enumerated in the National Provider Identifier (NPI) registry since 2008.
Beyond the registryWhat this record adds.
It is enrolled in Medicare, linking to 4 PECOS enrollment records (each with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 883 Medical Physician Assistant providers on file in Maryland.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
Your brand here.
Medicare enrollment
This provider holds 4 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20090520000240Physician AssistantMD
- I20211214000126Physician AssistantDC
- I20230106000152Physician AssistantPA
- I20250807001679Physician AssistantVA
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Mr. Mark Williams PA-C accepts. To confirm in-network status with your specific health plan, contact Mr. Mark Williams PA-C directly at (410) 641-3340.
Frequently asked
Yes. NPI 1861649642 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Medical Physician Assistant is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (410) 641-3340.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Mr. Mark Williams PA-C is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 883 Medical Physician Assistant providers are registered in Maryland, and Mr. Mark Williams PA-C is one of them. The figure refreshes each month from the federal source.