Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Troy W Baker, D.O.

Allergy & Immunology Physician in Mc Lean, VA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1023164910

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Registry record

Entity type Individual (Type 1)

Name Dr. Troy W Baker

Credential D.O.

Sex Male

Practice address Mc Lean, VA, 22102

Phone (703) 287-6559

Enumeration date Jan 25, 2007

Last updated in NPPES Jun 8, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 58.001854 (OH) Secondary

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License H0075043 (MD) Secondary

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 0102204034 (VA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

How do I verify Troy Baker's NPI record?

Cross-check NPI 1023164910 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1023164910 active?

Yes, as of the latest NPPES snapshot, NPI 1023164910 is active (record last updated 2021-06-08).

Other providers at this practice address

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Jennifer Resta Certified Registered Nurse Anesthetist · Mc Lean, VA NPI 1346249810 Steven Scherping Orthopaedic Surgery of the Spine Physician · Mc Lean, VA NPI 1578563375 Anil Taneja Adult Reconstructive Orthopaedic Surgery Physician · Mc Lean, VA NPI 1396736005 Jason Rashkin Clinical Cardiac Electrophysiology Physician · Mc Lean, VA NPI 1831171800 Dawn Wyckoff Family Medicine Physician · Mc Lean, VA NPI 1356328413 Christopher Nelson Anesthesiology Physician · Mc Lean, VA NPI 1487632477 Julie Ambrose Obstetrics & Gynecology Physician · Mc Lean, VA NPI 1043263163 Hang Phan Nguyen Family Nurse Practitioner · Mc Lean, VA NPI 1154374585

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-08.