NORTHBAY HEALTHCARE GROUP
NORTHBAY HEALTHCARE GROUP is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1780736736, based in Fairfield, CA. The organization lists 6 taxonomy classifications, with Addiction Medicine (Psychiatry & Neurology) Physician recorded as primary.
Getting there
The practice address on file is 1860 PENNSYLVANIA AVE STE 230, Fairfield, CA 94533. 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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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.
What Addiction Medicine covers
A doctor of osteopathy board eligible/certified in the field of Psychiatry by the American Osteopathic Board of Neurology and Psychiatry is able to obtain a Certificate of Added Qualifications in the field of Addiction Medicine NUCC Health Care Provider Taxonomy, code 2084A0401X
All registered taxonomy codes
This provider registers 6 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2084A0401X | Addiction Medicine (Psychiatry & Neurology) Physician Addiction Medicine | — | — | primary |
| 207RR0500X | Rheumatology Physician Rheumatology | — | — | |
| 2084N0400X | Neurology Physician Neurology | — | — | |
| 207RX0202X | Medical Oncology Physician Medical Oncology | — | — | |
| 207RG0100X | Gastroenterology Physician Gastroenterology | — | — | |
| 2278P1005X | Pulmonary Rehabilitation Certified Respiratory Therapist Pulmonary Rehabilitation | — | — |
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1780736736 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jan 18, 2007 |
| Last updated | Jan 22, 2026 |
| Status | Active |
| Practice address |
1860 PENNSYLVANIA AVE STE 230 Fairfield, CA 94533 (707) 646-4370 |
| Mailing address |
4500 BUSINESS CENTER DR Fairfield, CA 94534 |
| Other identifiers |
110000093
· Other (CA) GR0093200 · Other (CA) |
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 | 7 | 8 | 0 | 7 | 3 | 6 | 7 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 7 | 0 | 5 | 3 | 3 | 7 | 6 |
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.