Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel Jon Merenstein, MD

Family Medicine Physician in Vienna, VA · enumerated 2006 · practices at Inova Ucc LLC.

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

National Provider Identifier

1780748822

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Daniel Jon Merenstein

Credential MD

Sex Male

Practice address 180 Maple Ave W, Vienna, VA, 22180

Phone (703) 938-5300

Fax (703) 242-0726

Enumeration date Dec 21, 2006

Last updated in NPPES Nov 14, 2022

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD32709 (DC) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 0101058211 (VA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Daniel Merenstein?

The National Provider Identifier (NPI) for Daniel Merenstein is 1780748822, a Type 1 (individual) record in the CMS NPPES registry.

Where does Daniel Merenstein practice?

The practice location on file with NPPES is in Vienna, VA. 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 2022-11-14.