Jacob Matz, MD
Jacob Matz, MD is an Orthopaedic Trauma Physician in San Francisco, CA, registered under NPI 1740835131. 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 ORTHOPAEDIC TRAUMA INSTITUTE 2550 23RD ST BUILDING 9, 2ND FLOOR, San Francisco, CA 94110. 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 |
|---|---|---|
| A164084 | CA | Orthopaedic Trauma Physician primary |
This provider holds licence A164084 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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 Orthopaedic Trauma covers
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic trauma surgeons deal with the evaluation and management of acute orthopaedic injuries, evaluation and treatment of post-traumatic deformities and nonunions, acute and delayed reconstruction of pelvic and acetabular fractures, as well as osteotomy in the adult hip for treatment of hip arthritis. NUCC Health Care Provider Taxonomy, code 207XX0801X
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 | 1740835131 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 3, 2019 |
| Last updated | Aug 3, 2019 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MD |
| Practice address |
ORTHOPAEDIC TRAUMA INSTITUTE 2550 23RD ST BUILDING 9, 2ND FLOOR San Francisco, CA 94110 (415) 206-4532 |
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 | 4 | 0 | 8 | 3 | 5 | 1 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 8 | 0 | 7 | 3 | 1 | 1 | 6 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
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.