Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Claudiu Cristian Buck, DDS, DMD
Dentist in Washington, DC · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1235830894
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Claudiu Cristian Buck
Credential DDS, DMD
Sex Male
Practice address 1201 Sycamore Dr Se, Washington, DC, 20032
Phone (202) 745-7000
Enumeration date Mar 10, 2023
Last updated in NPPES Jan 15, 2024
Taxonomy & licenses
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
What is the NPI number for Claudiu Buck?
The National Provider Identifier (NPI) for Claudiu Buck is 1235830894, a Type 1 (individual) record in the CMS NPPES registry.
Where does Claudiu Buck practice?
The practice location on file with NPPES is in Washington, DC. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Whitman-Walker Clinic, Inc. Federally Qualified Health Center (FQHC) · Washington, DC NPI 1821113341 Megan Saunders Psychiatric/Mental Health Nurse Practitioner · Washington, DC NPI 1639299308 Whitman-Walker Clinic Inc. Community/Retail Pharmacy · Washington, DC NPI 1003316316 Sarah King Family Nurse Practitioner · Washington, DC NPI 1174136345 Richard Farneth Infectious Disease Physician · Washington, DC NPI 1093392755 Gabrielle Aquino Infectious Disease Physician · Washington, DC NPI 1548848575 Nakea Jeffers Clinical Social Worker · Washington, DC NPI 1043930134 David Cole Mental Health Counselor · Washington, DC NPI 1922883776
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-15.