John Aita, M.D.
John Aita, M.D. is a Transplant Hepatology Physician in Bellingham, WA, registered under NPI 1518956556. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 4545 CORDATA PKWY SUITE 1B, Bellingham, WA 98226. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| MD60459310 | WA | Internal Medicine Physician |
| MD60459310 | WA | Gastroenterology Physician |
| MD60459310 | WA | Transplant Hepatology Physician primary |
This provider holds licence MD60459310 issued in WA. 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 - Gastroenterology
- PAC ID
- 9739311184
Enrolled in Medicare 3 times, across 3 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Washington | I20160629003085 | Practitioner - Gastroenterology |
| Arizona | I20220307001428 | Practitioner - Gastroenterology |
| Nebraska | I20241008000272 | Practitioner - Gastroenterology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Gastroenterology. There are 3 separate enrolment records across 3 states (WA, AZ, NE). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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 Transplant Hepatology covers
An internist with special knowledge and the skill required of a gastroenterologist to care for patients prior to and following hepatic transplantation that spans all phases of liver transplantation. Selection of appropriate recipients requires assessment by a team having experience in evaluating the severity and prognosis of patients with liver disease. NUCC Health Care Provider Taxonomy, code 207RT0003X
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 | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | MD60459310 | WA | |
| 207RG0100X | Gastroenterology Physician Gastroenterology | MD60459310 | WA | |
| 207RT0003X | Transplant Hepatology Physician Transplant Hepatology | MD60459310 | WA | 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 | 1518956556 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 20, 2005 |
| Last updated | Oct 10, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | M.D. |
| Practice address |
4545 CORDATA PKWY SUITE 1B Bellingham, WA 98226 (360) 738-2200 |
| Mailing address |
1115 SE 164TH AVE DEPT 358 Vancouver, WA 98683 |
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 | 5 | 1 | 8 | 9 | 5 | 6 | 5 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 2 | 8 | 9 | 5 | 3 | 5 | 1 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
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.