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

Individual provider Medical Physician Assistant · NPI 1700873510

Gregor Siebert, PA is a Physician Assistant in Alexandria, Virginia. Qualified in 2001, 25 years ago. Practices with Patient First Richmond Medical Group PLLC, a 320-clinician group and accepts Medicare assignment. Licensed in Virginia.

Years since qualifying
25
Licensed in
VA
In the registry since
2005
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

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Practice location Address checks out

6311 Richmond Hwy
Alexandria, VA 22306-6410
Phone: (703) 647-6087
Fax: (703) 647-6088
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Physician Assistant (primary) Taxonomy 363AM0700X · Licence 0110004442 (VA)

Record details

NPI number1700873510
Entity typeIndividual (Type 1)
GenderMale
Credentials PA
Sole proprietorNo
NPI enumeratedOctober 6, 2005
Last updated in NPPESFebruary 2, 2022
Certification dateFebruary 2, 2022
Mailing address5000 Cox Rd, Suite 100, Glen Allen, VA 23060-9263

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Patient First Richmond Medical Group Pllc — 320 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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