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

Mrs. Pamela Ellen Marcus, RN APRN, PMH, BC

Psychiatric/Mental Health Clinical Nurse Specialist in Upper Marlboro, MD · enumerated 2007 · practices at Changing Cycles, LLC.

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

National Provider Identifier

1972629350

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Registry record

Entity type Individual (Type 1)

Name Mrs. Pamela Ellen Marcus

Credential RN APRN, PMH, BC

Sex Female

Practice address Upper Marlboro, MD, 20772

Phone (301) 952-9286

Fax (301) 952-9287

Enumeration date Mar 21, 2007

Last updated in NPPES Oct 17, 2011

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

Taxonomy & licenses

364SP0808X Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License R052316 (MD) Primary

Other identifiers

Identifier	Type	State	Issuer
786410800	Medicaid	MD	-

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

What specialty is Pamela Marcus?

Pamela Marcus is registered in NPPES with the primary taxonomy of Psychiatric/Mental Health Clinical Nurse Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Alphonso Lewis Mental Health Counselor · Upper Marlboro, MD NPI 1376867986 Changing Cycles, LLC Professional Counselor · Upper Marlboro, MD NPI 1265713705

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-17.