Erica Nakajima
Erica Nakajima is an Internal Medicine Physician in Washington, DC, registered under NPI 1003203134.
Getting there
Here is what surrounds this office in Washington, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 823 ft away. The nearest transit stop is 256 ft away, served by Loughboro Rd NW at Palisade Ln NW. If you arrive early, there is a coffee shop 0.41 mi away.
Getting here and what is nearby
Transit Loughboro Rd NW at Sibley Hospital 221 ft ~1 min
Transit Loughboro Rd NW at Sibley Hospital 248 ft ~1 min
Transit Loughboro Rd NW at Palisade Ln NW 256 ft ~1 min
Parking Sibley Hospital Guest Parking 449 ft ~2 min
Parking 728 ft ~3 min
Parking 823 ft ~4 min
Coffee Kung Fu Tea 0.41 mi ~9 min
Convenience Mimi's Convenience Store 0.41 mi ~9 min
5435 MacArthur Boulevard Northwest
Mo-Fr 06:30-20:00; Sa 08:00-20:00
Restaurant Claudio's Table 0.41 mi ~9 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 |
|---|---|---|
| D0088660 | MD | Internal Medicine Physician primary |
This provider holds licence D0088660 issued in MD. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Internal Medicine
- PAC ID
- 3870897952
- Enrollment ID
- I20220302002911
Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. 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.
What Internal Medicine covers
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. NUCC Health Care Provider Taxonomy, code 207R00000X
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 | 1003203134 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 15, 2015 |
| Last updated | Aug 31, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
5255 LOUGHBORO RD NW FL 1 Washington, DC 20016 (202) 660-6500 |
| Mailing address |
5255 LOUGHBORO RD NW Washington, DC 20016 |
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 | 2 | 0 | 3 | 1 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 0 | 6 | 1 | 6 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.