Lisseth Thomas, PHD
Lisseth Thomas, PHD is a Clinical Psychologist in Fairfax, VA, registered under NPI 1003060252. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Fairfax, based on OpenStreetMap data collected Sep 3, 2026. Parking is available about 0.47 mi away at Market Garage. There is EV charging 0.48 mi from the office (Blink) — useful if you are driving in from out of town. The nearest transit stop is 0.24 mi away, served by Williams Dr at Arlington Bl. A pharmacy sits 0.39 mi from the entrance (District Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.41 mi away.
Getting here and what is nearby
Parking 435 ft ~2 min
Parking 509 ft ~2 min
Transit Arlington Blvd & Prosperity Ave (SE) 0.23 mi ~5 min
Transit Arlington Bl at Williams Dr 0.23 mi ~5 min
Transit Williams Dr at Arlington Bl 0.24 mi ~5 min
Restaurant Right Angle Cafe 0.29 mi ~6 min
Pharmacy Hann's Pharmacy 0.30 mi ~6 min
8505 Arlington Boulevard, Fairfax 22031
Mo-Fr 08:00-17:30; Sa 09:00-12:00
Restaurant Nando's 0.33 mi ~7 min
2987 District Avenue, Fairfax 22031
Su-Th 11:00-22:00; Fr-Sa 11:00-23:00
Restaurant Pupatella 0.34 mi ~7 min
2980 District Avenue, Fairfax 22031
Su-Th 11:30-21:00; Fr-Sa 11:30-22:00
Gas station Merrifield Shell 0.36 mi ~8 min
8413 Route 29, Merrifield 22031
Coffee Colada Shop 0.39 mi ~8 min
2920 District Avenue, Fairfax 22031
Su-Th 08:00-20:00; Fr-Sa 08:00-21:00
Pharmacy District Pharmacy 0.39 mi ~8 min
8301 Arlington Boulevard, Fairfax 22031
Coffee Starbucks 0.40 mi ~8 min
2921 District Avenue
Coffee Starbucks 0.41 mi ~9 min
Gas station BP 0.44 mi ~9 min
8318 Route 29, Fairfax 22031
Grocery Great Wall 0.44 mi ~9 min
2982 Gallows Road, Fairfax 22031
Su-Sa 08:00-23:00
EV charging Blink 0.47 mi ~10 min
EV charging Blink 0.47 mi ~10 min
Parking Market Garage 0.47 mi ~10 min
EV charging Blink 0.48 mi ~10 min
Gas station Sunoco 0.48 mi ~10 min
3070 Gate House Plaza, Falls Church 22042
Fr 00:00-23:59
Convenience Sunoco 0.49 mi ~10 min
Grocery MOM's Organic Market 0.49 mi ~10 min
Hotel Extended Stay America 0.50 mi ~10 min
Willow Oaks Corporate Drive, Fairfax 22031
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 |
|---|---|---|
| PSY-1230 | HI | Clinical Psychologist |
| 0810008585 | VA | Clinical Psychologist primary |
Licences are recorded in 2 states: HI, VA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 2 states
This provider holds licences in 2 states: Hawaii and Virginia. The practice address on file is in Fairfax, VA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 0810008585
- Specialty
- Clinical Psychologist
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Clinical covers
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems. NUCC Health Care Provider Taxonomy, code 103TC0700X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist Clinical | PSY-1230 | HI | |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — | |
| 103TC0700X | Clinical Psychologist Clinical | 0810008585 | VA | primary |
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 | 1003060252 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 13, 2008 |
| Last updated | Jul 23, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | PHD |
| Practice address |
3020 HAMAKER CT Fairfax, VA 22031 (703) 204-0085 |
| Other names |
Lisseth Calvio Former Legal Business Name |
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 | 0 | 6 | 0 | 2 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 6 | 0 | 2 | 1 |
Sum = 38 · next multiple of 10 = 40 · check digit = 2 · actual last digit = 2
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.