Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William Samuel Sawchuk, M.D.
Dermatology Physician in Vienna, VA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1205954542
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Registry record
Entity type Individual (Type 1)
Name Dr. William Samuel Sawchuk
Credential M.D.
Sex Male
Practice address 8320 Old Courthouse Rd, Suite 303, Vienna, VA, 22182
Phone (703) 532-7211
Fax (703) 534-2874
Enumeration date Mar 26, 2007
Last updated in NPPES Apr 8, 2021
Taxonomy & licenses
207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 0101039346 (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.
Frequently asked questions
What specialty is William Sawchuk?
William Sawchuk is registered in NPPES with the primary taxonomy of Dermatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Heidi Crayton Neurology Physician · Vienna, VA NPI 1669470720 Jacqueline Eghrari-Sabet Allergy & Immunology Physician · Vienna, VA NPI 1295770998 Erin Berk Physical Therapist · Vienna, VA NPI 1417961236 Nita Sumida, M.D. , P.L.L.C. Medical Specialty Clinic/Center · Vienna, VA NPI 1730281205 Kwang Han Physical Therapist · Vienna, VA NPI 1194892331 Ms Center of Greater Washington PC Clinic/Center · Vienna, VA NPI 1245381789 Tysons Therapeutics Pllc Clinic/Center · Vienna, VA NPI 1295886034 Gayle Masri-Fridling Dermatology Physician · Vienna, VA NPI 1336267681
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-08.