HARLEY S SCHULTZ MD & VLADIMIR A TITOV MD PHD INC
HARLEY S SCHULTZ MD & VLADIMIR A TITOV MD PHD INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1053376103, based in San Leandro, CA. The organization lists 2 taxonomy classifications, with Diabetes Educator Registered Nurse recorded as primary.
Getting there
The practice address on file is 13847 E 14TH #216, San Leandro, CA 94578. 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 |
|---|---|---|
| A56479 | CA | Internal Medicine Physician |
| G36475 | CA | Internal Medicine Physician |
This provider holds licence A56479 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 Diabetes Educator covers
Definition to come... NUCC Health Care Provider Taxonomy, code 163WD0400X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 163WD0400X | Diabetes Educator Registered Nurse Diabetes Educator | — | — | primary |
| 207R00000X | Internal Medicine Physician | A56479 | CA | |
| 207R00000X | Internal Medicine Physician | G36475 | CA |
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 | 1053376103 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Apr 20, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Practice address |
13847 E 14TH #216 San Leandro, CA 94578 (510) 351-1193 Fax (510) 351-6456 |
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 | 5 | 3 | 3 | 7 | 6 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 1 | 3 | 6 | 7 | 3 | 1 | 0 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.