Alan Fisch, MD
Alan Fisch, MD is an Addiction Medicine (Psychiatry & Neurology) Physician in Cambridge, MA, registered under NPI 1043239270. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. 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 872 MASSACHUSETTS AVE. STE. 2-2, 2-7, Cambridge, MA 02139. 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 |
|---|---|---|
| 28176 | MA | Addiction Medicine (Psychiatry &… primary |
| 28176 | MA | Psychiatry Physician |
This provider holds licence 28176 issued in MA. 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 - Psychiatry
- PAC ID
- 9931108883
Medicare enrolment is recorded as approved under the provider type Practitioner - Psychiatry. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
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 2 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 | 28176 | MA | primary |
| 2084P0800X | Psychiatry Physician Psychiatry | 28176 | MA |
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 | 1043239270 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 19, 2006 |
| Last updated | Mar 3, 2015 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MD |
| Practice address |
872 MASSACHUSETTS AVE. STE. 2-2, 2-7 Cambridge, MA 02139 (617) 395-5806 Fax (617) 383-6404 |
| Mailing address |
1000 JEFFERSON ST. STE. 2C Lynchburg, VA 24504 |
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 | 4 | 3 | 2 | 3 | 9 | 2 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 8 | 3 | 4 | 3 | 9 | 2 | 5 |
Sum = 60 · next multiple of 10 = 60 · 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.