Allison Tweedie, MD
Allison Tweedie, MD is a Psychiatry Physician in Falls Church, VA, registered under NPI 1003041500. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
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 |
|---|---|---|
| MT195449 | PA | Psychiatry Physician |
| MT195449 | PA | Child & Adolescent Psychiatry Physician |
| MT195449 | PA | Student in an Organized Health Care… |
| 0101256838 | VA | Psychiatry Physician primary |
Licences are recorded in 2 states: PA, VA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Psychiatry
- PAC ID
- 4880907054
- Enrollment ID
- I20150716001789
Medicare enrolment is recorded as approved under the provider type Practitioner - Psychiatry. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: Pennsylvania and Virginia. The practice address on file is in Falls Church, 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
- 0101256838
- Specialty
- Psychiatry Physician
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 Psychiatry covers
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems. NUCC Health Care Provider Taxonomy, code 2084P0800X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2084P0800X | Psychiatry Physician Psychiatry | MT195449 | PA | |
| 2084P0804X | Child & Adolescent Psychiatry Physician Child & Adolescent Psychiatry | MT195449 | PA | |
| 390200000X | Student in an Organized Health Care Education/Training Program | MT195449 | PA | |
| 2084P0800X | Psychiatry Physician Psychiatry | 0101256838 | 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 | 1003041500 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 28, 2009 |
| Last updated | Jan 24, 2020 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
3300 GALLOWS RD Falls Church, VA 22042 (703) 776-4001 Fax (703) 776-7113 |
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 | 4 | 1 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 4 | 2 | 5 | 0 |
Sum = 40 · next multiple of 10 = 40 · check digit = 0 · actual last digit = 0
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.