Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marissa Bittner
Physician Assistant in Dover, DE · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1588574990
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Marissa Bittner
Sex Female
Practice address 1113 S State St Ste 202, Dover, DE, 19901
Phone (302) 261-5600
Fax (302) 450-3181
Enumeration date Sep 9, 2026
Last updated in NPPES Sep 9, 2026
Taxonomy & licenses
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
What is the NPI number for Marissa Bittner?
The National Provider Identifier (NPI) for Marissa Bittner is 1588574990, a Type 1 (individual) record in the CMS NPPES registry.
Where does Marissa Bittner practice?
The practice location on file with NPPES is in Dover, DE. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-09-09.