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

Dr. Martha S Rubenstein, PH.D.

Clinical Psychologist in Kingsport, TN · enumerated 2007.

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

National Provider Identifier

1811035967

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Registry record

Entity type Individual (Type 1)

Name Dr. Martha S Rubenstein

Credential PH.D.

Sex Female

Practice address Kingsport, TN, 37660

Phone (423) 392-6898

Fax (423) 392-6900

Enumeration date Feb 1, 2007

Last updated in NPPES Apr 29, 2022

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

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License P1844 (TN) Secondary

103TA0700X Adult Development & Aging Psychologist Behavioral Health & Social Service Providers · License P1844 (TN) Secondary

103TC1900X Counseling Psychologist Behavioral Health & Social Service Providers · License P1844 (TN) Secondary

103TF0000X Family Psychologist Behavioral Health & Social Service Providers · License P1844 (TN) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License P1844 (TN) Primary

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

Other identifiers

Identifier	Type	State	Issuer
9213177	Other	TN	PHCS
086618000	Other	TN	MAGELLAN
283730	Other	TN	BCBS VA
4522650	Other	TN	AETNA
089489	Other	TN	VALUE OPTIONS
123121	Other	TN	MHN
3051273	Other	TN	BCBS TN

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1811035967 active?

Yes, as of the latest NPPES snapshot, NPI 1811035967 is active (record last updated 2022-04-29).

How do I verify Martha Rubenstein's NPI record?

Cross-check NPI 1811035967 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-04-29.