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

Dr. Glen David Greenberg, PHD

Clinical Neuropsychologist in Newark, DE · enumerated 2006.

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

National Provider Identifier

1336119346

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Registry record

Entity type Individual (Type 1)

Name Dr. Glen David Greenberg

Credential PHD

Sex Male

Practice address Newark, DE, 19713

Phone (610) 566-0501

Fax (610) 566-0502

Enumeration date Jan 23, 2006

Last updated in NPPES Apr 30, 2018

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

Taxonomy & licenses

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License PS 004797-L (PA) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License B1 0000441 (DE) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PS 004797-L (PA) Secondary

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License B1 0000441 (DE) 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
214951	Other	-	COMPPSYCH
3350135	Other	-	AETNA
001187272003	Medicaid	PA	-
221962	Other	-	VALUE OPTIONS
0488565000	Other	-	MAGELLAN
0427479000	Other	-	AMERIHEALTH
1000033037	Medicaid	DE	-
70659	Other	-	CIGNA BEHAVIORAL HEALTH
001661440	Other	-	BS PERSONAL CHOICE
1000033037	Other	-	DELAWARE PHYSICIANS CARE

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 Glen Greenberg's NPI record?

Cross-check NPI 1336119346 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1336119346 active?

Yes, as of the latest NPPES snapshot, NPI 1336119346 is active (record last updated 2018-04-30).

Other providers at this practice address

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Alison Mcdonough Spano Clinical Psychologist · Newark, DE NPI 1801561600 Katherine Lopez Clinical Psychologist · Newark, DE NPI 1891576773

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-30.