Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Colleen Leitner, MD
Psychiatry Physician in Lewes, DE · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1235593765
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Registry record
Entity type Individual (Type 1)
Name Colleen Leitner
Credential MD
Sex Female
Practice address 1518 Savannah Rd, Lewes, DE, 19958
Phone (302) 448-4266
Enumeration date Apr 11, 2016
Last updated in NPPES Oct 11, 2023
Taxonomy & licenses
2084P0804X Child & Adolescent Psychiatry Physician Allopathic & Osteopathic Physicians · License C1-0024146 (DE) Secondary
2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License C1-0024146 (DE) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD 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.
Frequently asked questions
Where does Colleen Leitner practice?
The practice location on file with NPPES is in Lewes, DE. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Colleen Leitner?
The National Provider Identifier (NPI) for Colleen Leitner is 1235593765, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Edward Wilson Clinical Psychologist · Lewes, DE NPI 1194837500 Peter Appel Clinical Psychologist · Lewes, DE NPI 1073616967 Melody Benson Psychiatry Physician · Lewes, DE NPI 1811080237 Mary Moor Clinical Psychologist · Lewes, DE NPI 1558648519 Erica Winn Mental Health Counselor · Lewes, DE NPI 1396215661
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-11.