Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Georgianna K. Marks, PHD, APRN, PC

Adult Psychiatric/Mental Health Clinical Nurse Specialist in Boston, MA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1396854394

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Registry record

Entity type Individual (Type 1)

Name Ms. Georgianna K. Marks

Credential PHD, APRN, PC

Sex Female

Practice address Boston, MA, 02125

Phone (857) 230-0983

Fax (866) 610-6501

Enumeration date Aug 30, 2006

Last updated in NPPES Jun 13, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

364SP0809X Adult Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 124796 (MA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Georgianna Marks's NPI record?

Cross-check NPI 1396854394 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1396854394 active?

Yes, as of the latest NPPES snapshot, NPI 1396854394 is active (record last updated 2016-06-13).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-06-13.