Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Marco D Castro, M.D.
Neurology Physician in Fairfax, VA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1245209766
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Registry record
Entity type Individual (Type 1)
Name Dr. Marco D Castro
Credential M.D.
Sex Male
Practice address 3020 Hamaker Ct, Suite 400, Fairfax, VA, 22031
Phone (703) 876-0800
Fax (703) 876-0866
Enumeration date Mar 16, 2006
Last updated in NPPES Jun 8, 2022
Taxonomy & licenses
2084E0001X Epilepsy Physician Allopathic & Osteopathic Physicians · License 0101048658 (VA) Secondary
2084N0600X Clinical Neurophysiology Physician Allopathic & Osteopathic Physicians · License 0101048658 (VA) Secondary
2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 0101048658 (VA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 7110448 | Medicaid | VA | - |
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
How do I verify Marco Castro's NPI record?
Cross-check NPI 1245209766 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1245209766 active?
Yes, as of the latest NPPES snapshot, NPI 1245209766 is active (record last updated 2022-06-08).
Other providers at this practice address
Browse all → Joann Pfundstein Internal Medicine Physician · Fairfax, VA NPI 1912900598 Richard Ranard Gastroenterology Physician · Fairfax, VA NPI 1174514400 Lucille Beck Gastroenterology Physician · Fairfax, VA NPI 1356332548 John Basile Urology Physician · Fairfax, VA NPI 1548235732 James Simsarian Neurology Physician · Fairfax, VA NPI 1235108986 Albert Delnegro Clinical Cardiac Electrophysiology Physician · Fairfax, VA NPI 1164491734 Richard Seestedt Neurology Physician · Fairfax, VA NPI 1104895630 Amy Stone Neurology Physician · Fairfax, VA NPI 1235108770
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-08.