Mark Williams M.D.
About this NPIWhat this record shows.
NPI 1811967367 is registered to Mark Williams M.D., a Psychiatry practising at 200 1st St Sw in Rochester, Minnesota. Psychiatry is the medical specialty focused on the diagnosis, treatment, and prevention of mental health conditions, including depression, anxiety, bipolar disorder, and schizophrenia. Mark Williams M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Medicare enrollment
This provider holds a Medicare enrollment 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
- I20100310001010PsychiatryMN
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 Mark Williams M.D. accepts. To confirm in-network status with your specific health plan, contact Mark Williams M.D. directly at (507) 284-2511.
Frequently asked
Yes. NPI 1811967367 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Psychiatry is the medical specialty focused on the diagnosis, treatment, and prevention of mental health conditions, including depression, anxiety, bipolar disorder, and schizophrenia.
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 (507) 284-2511.
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. Mark Williams M.D. is a Type-1 individual NPI.