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

Douglas Mao

Individual provider Mental Health Counselor · NPI 1619597648

Douglas Mao is a Mental Health Counselor in Sterling, Virginia. Qualified in 2018, 8 years ago. Practices with County of Loudoun Virginia, a 31-clinician group and accepts Medicare assignment. Licensed in Virginia.

Years since qualifying
8
Licensed in
VA
In the registry since
2020
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Practice location Address checks out

21641 Ridgetop Cir Ste 210
Sterling, VA 20166-6597
Phone: (703) 771-5155
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence 0701014878 (VA)

Record details

NPI number1619597648
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 20, 2020
Last updated in NPPESMay 30, 2025
Certification dateMay 30, 2025
Mailing address21641 Ridgetop Cir Ste 210, Sterling, VA 20166-6597

Medicare enrollment

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

Medicare specialtyMENTAL HEALTH COUNSELOR
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice County Of Loudoun Virginia — 31 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Sterling