Sarah Marakos, DO
Sarah Marakos, DO is a Pediatrics Physician in Falls Church, VA, registered under NPI 1003482183. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Falls Church, based on OpenStreetMap data collected Sep 1, 2026. Parking is available about 793 ft away at Blue Garage. The nearest transit stop is 967 ft away, served by Gallows Rd at INOVA Emergency. If you arrive early, there is a coffee shop 0.34 mi away.
Getting here and what is nearby
Transit Wilmot Wy at INOVA Hospital Gray Entrance 395 ft ~2 min
Parking Gray Garage 473 ft ~2 min
Restaurant Panera Bread 629 ft ~3 min
3300 Gallows Road, Falls Church 22042
07:00-23:00
Parking Green Garage 680 ft ~3 min
Parking Blue Garage 793 ft ~4 min
Fairfax Hospital Blue Entrance, Falls Church 22042
Transit Gallows Rd at INOVA Emergency 862 ft ~4 min
Transit Gallows Rd at INOVA Emergency 967 ft ~4 min
Coffee Woodburn Cafe 0.34 mi ~7 min
Gas station Exxon 0.40 mi ~9 min
Hotel Extended Stay America 0.42 mi ~9 min
Willow Oaks Corporate Drive, Fairfax 22031
Convenience 7-Eleven 0.43 mi ~9 min
Restaurant Yummy Kabob 0.46 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 0116035166 | VA | Pediatrics Physician primary |
This provider holds licence 0116035166 issued in VA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Pediatrics covers
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development. NUCC Health Care Provider Taxonomy, code 208000000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003482183 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 31, 2021 |
| Last updated | May 31, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | DO |
| Practice address |
3300 GALLOWS RD Falls Church, VA 22042 (703) 776-6652 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 4 | 8 | 2 | 1 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 8 | 4 | 1 | 7 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.