Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ruby B Nah, D.D.S.
Dentist in Frederick, MD · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841637717
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Registry record
Entity type Individual (Type 1)
Name Ruby B Nah
Credential D.D.S.
Sex Female
Practice address 130 Thomas Johnson Dr, Frederick, MD, 21702
Phone (301) 662-0222
Enumeration date May 31, 2013
Last updated in NPPES Dec 2, 2019
Taxonomy & licenses
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees.
About the DDS 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 Ruby Nah practice?
The practice location on file with NPPES is in Frederick, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Ruby Nah?
The National Provider Identifier (NPI) for Ruby Nah is 1841637717, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-02.