Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Han Tonthat, MD

Individual provider Internal Medicine Physician · NPI 1801897335

Dr. Han Tonthat, MD is an Internal Medicine in Herndon, Virginia. Qualified in 1995, 31 years ago. Accepts Medicare assignment and offers telehealth. Licensed in Virginia.

Years since qualifying
31
Licensed in
VA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1035 Sterling Rd Ste 104
Herndon, VA 20170-3838
Phone: (703) 840-0610
Fax: (571) 323-3243
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 0101056112 (VA)

Record details

NPI number1801897335
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 9, 2005
Last updated in NPPESOctober 4, 2021
Certification dateOctober 4, 2021
Mailing address1035 Sterling Rd Ste 104, Herndon, VA 20170-3838

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesPSYCHIATRY
Medical schoolOTHER
Graduated 1995 (31 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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