Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William J Delapaz, M.D.
Gynecology Physician in Waldorf, MD · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770573891
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name William J Delapaz
Credential M.D.
Sex Male
Practice address 11340 Pembrooke Sq, Suite 203, Waldorf, MD, 20603
Phone (301) 843-7737
Fax (301) 932-7917
Enumeration date Oct 28, 2005
Last updated in NPPES Dec 21, 2016
Taxonomy & licenses
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 William Delapaz practice?
The practice location on file with NPPES is in Waldorf, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Delapaz?
The National Provider Identifier (NPI) for William Delapaz is 1770573891, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Boris Naydich Radiation Oncology Physician · Waldorf, MD NPI 1467419820 Ashima Saini Internal Medicine Physician · Waldorf, MD NPI 1285682757 Surgical Associates, Chartered Surgery Physician · Waldorf, MD NPI 1861447401 Endoscopic Associates of Waldorf PA Anesthesiology Physician · Waldorf, MD NPI 1033437272 Silvia Abularach Obstetrics & Gynecology Physician · Waldorf, MD NPI 1427341593 Medstar Southern Maryland Physicians, LLC Obstetrics & Gynecology Physician · Waldorf, MD NPI 1316340201
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-12-21.