NPPES file of Aug 9, 2026

Mark K. Williams, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner · Marietta, GA

Mark K. Williams, PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Marietta, Georgia, and NPI 1699696401, issued on Jul 25, 2026. Check the license (Georgia APRN-NP225726, as entered in NPPES) with the Georgia board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1699696401
Name
Mark K. Williams
Credential
PMHNP-BC
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
APRN-NP225726 GA
Self-reported in NPPES; status is on the state search
Practice location
1121 Johnson Ferry RD Ste 450, Marietta, GA 30068
Phone
(770) 694-6349
Enumerated
Jul 25, 2026
Record last updated
Jul 25, 2026
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest psychiatric/mental health nurse practitioner records → All 1,381 in Georgia → Look up another NPI →

Also registered at 1121 Johnson Ferry RD Ste 450

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Mark Crossen, LMSWSocial Worker1265180897
  2. Kasandra Jean-Louis, PMHNPPsychiatric/Mental Health Nurse Practitioner1902745169
  3. Lawrence Kuhn, M.D.Psychiatry Physician1063522464
  4. Mushairat Mamun, PAPhysician Assistant1295423143
  5. Peter Onchoke, APRNPsychiatric/Mental Health Registered Nurse1811747827
  6. Kishwar Peiris, LPCProfessional Counselor1972363406

Verify Mark K. Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Georgia board licenses this profession
    Search for license APRN-NP225726    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Georgia license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Mark K. Williams among 1,381 psychiatric/mental health nurse practitioner records in Georgia

Mark K. Williams, PMHNP-BC is one of 1,381 psychiatric/mental health nurse practitioner records with a practice address in Georgia. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2026, is newer than 92% of them.

  • NPI issued2026 · 92% of these records are older, 0% newer
  • In a Medicare fileNo · 61% of these records are
  • In the CMS Doctors and Clinicians fileNo · 45% of these records are
  • Record last updated2026 · 15% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatric/Mental Health Nurse Practitioner providers in Georgia

There are 1,381 psychiatric/mental health nurse practitioner records in Georgia. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,381 in Georgia → Every provider in Marietta → Psychiatric/Mental Health Nurse Practitioner nationwide →

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Abibat (wendy) BalogunMarietta, GA 300681992409544
  2. Kasandra Jean-Louis, PMHNPMarietta, GA 300681902745169
  3. Kirsten Ridgely, ANPMarietta, GA 300681215897376
  4. Charles AtunzuMarietta, GA 300671417883927
  5. Nassaratou Diaby, PMHNP-BCMarietta, GA 300671154784551
  6. Korinne Edwards, PMHNPMarietta, GA 300671235639535
  7. Maima Fortune, NPMarietta, GA 300671598240822
  8. Amanda Green, NPMarietta, GA 300671801151592

Common questions

What is Mark K. Williams, PMHNP-BC's NPI number?

Mark K. Williams, PMHNP-BC's National Provider Identifier (NPI) is 1699696401, issued on Jul 25, 2026. An NPI identifies a provider in billing; it is not a license.

Where is Mark K. Williams, PMHNP-BC located?

The NPPES record lists a practice address at 1121 Johnson Ferry RD Ste 450, Marietta, GA, 30068. Phone: (770) 694-6349. Providers update this record themselves, so call before visiting.

How can I verify Mark K. Williams, PMHNP-BC's license?

NPPES lists Georgia license number APRN-NP225726, as entered by the provider. Search the Georgia board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.