John Hardy, MD
John Hardy, MD is an Addiction Medicine (Preventive Medicine) Physician in Portland, OR, registered under NPI 1942522388. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 7820 NE HOLMAN ST STE B7, Portland, OR 97218. 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 |
|---|---|---|
| MD18862 | OR | Addiction Medicine (Preventive Medicine)… primary |
This provider holds licence MD18862 issued in OR. 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
- Order And Referring Only - Addiction Medicine
- PAC ID
- 4183921513
- Enrollment ID
- I20160329002536
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Addiction 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 Addiction Medicine covers
A physician engaged in the subspecialty practice of Addiction Medicine who specializes in the prevention, evaluation, diagnosis, treatment, and recovery of persons with the disease of addiction. NUCC Health Care Provider Taxonomy, code 2083A0300X
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 | 1942522388 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 26, 2010 |
| Last updated | May 20, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MD |
| Practice address |
7820 NE HOLMAN ST STE B7 Portland, OR 97218 (971) 533-5840 Fax (971) 270-2806 |
| Other identifiers |
MD18862
· Other (OR) |
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 | 9 | 4 | 2 | 5 | 2 | 2 | 3 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 8 | 2 | 1 | 2 | 4 | 3 | 7 |
Sum = 62 · next multiple of 10 = 70 · check digit = 8 · actual last digit = 8
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.