Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Samuel Mayo, FNP

Individual provider Registered Nurse · NPI 1033769872

Samuel Mayo, FNP is a Nurse Practitioner in Falls Church, Virginia. Qualified in 2019, 7 years ago. Practices with Inova Health Care Services, a 1,827-clinician group, works from 8 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and Virginia.

Years since qualifying
7
Licensed in
MA, VA
In the registry since
2019
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

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Practice location Address checks out

3300 Gallows Rd
Falls Church, VA 22042-3307
Phone: (703) 776-4001
Fax: (703) 776-7113
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (7)

  • 10 Bellamy St, Brighton, MA 02135-1502 — (617) 782-8113
  • 1500 N Beauregard St Ste 300, Alexandria, VA 22311-1715 — (703) 845-1500
  • 4320 Seminary Rd, Alexandria, VA 22304-1535 — (703) 504-3000
  • 3580 Joseph Siewick Dr Ste 206, Fairfax, VA 22033-1764 — (703) 391-4500
  • 8081 Innovation Park Dr Ste 900, Fairfax, VA 22031-4867 — (571) 472-4200
  • 3600 Joseph Siewick Dr, Fairfax, VA 22033-1709 — (703) 391-3600
  • 7051 Heathcote Village Way Ste 230, Gainesville, VA 20155-3266 — (703) 391-4500

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 0024180697 (VA)
Registered Nurse Taxonomy 163W00000X · Licence RN2312854 (MA)

Record details

NPI number1033769872
Entity typeIndividual (Type 1)
GenderMale
Credentials FNP
Sole proprietorNo
NPI enumeratedSeptember 13, 2019
Last updated in NPPESAugust 5, 2021
Certification dateAugust 5, 2021

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Inova Health Care Services — 1827 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients296
Services billed 594 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $306 12 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Inova Health Care Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1827 clinicians in the practice; 12 are shown here.

Other providers in Falls Church