Thomas Conklin, M.D.
Thomas Conklin, M.D. is an Adult Medicine Physician in Northridge, CA, registered under NPI 1124066436. 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 18417 NORDHOFF ST SUITE# B, Northridge, CA 91325. 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 |
|---|---|---|
| 156153 | MA | Adult Medicine Physician primary |
This provider holds licence 156153 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 - Family Practice
- PAC ID
- 0648283697
Medicare enrolment is recorded as approved under the provider type Practitioner - Family Practice. 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 Adult Medicine covers
The NUCC recommends this code not be used. Choose a more appropriate code. NUCC Health Care Provider Taxonomy, code 207QA0505X
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 | 1124066436 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 2, 2006 |
| Last updated | Feb 11, 2015 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | M.D. |
| Practice address |
18417 NORDHOFF ST SUITE# B Northridge, CA 91325 (818) 701-0551 Fax (818) 701-5360 |
| Mailing address |
2650 SANTA YNEZ AVE Simi Valley, CA 93063 |
| Other identifiers |
G44486
· LICENSE NUMBER (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 | 1 | 2 | 4 | 0 | 6 | 6 | 4 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 4 | 4 | 0 | 6 | 3 | 4 | 6 |
Sum = 54 · next multiple of 10 = 60 · 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.