Michael Castor
Michael Castor is a provider specialising in Case Manager/Care Coordinator in Campbell, CA, registered under NPI 1003053182. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Campbell, based on OpenStreetMap data collected Sep 2, 2026. Parking is available about 0.25 mi away. There is EV charging 0.38 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 0.27 mi away, served by West Campbell Avenue & Llewellyn Avenue. If you arrive early, there is a coffee shop 0.35 mi away.
Getting here and what is nearby
Parking 625 ft ~3 min
Parking 801 ft ~4 min
Restaurant Jack in the Box 0.20 mi ~5 min
Transit West Hamilton Avenue & Llewellyn Avenue 0.21 mi ~5 min
Hotel Larkspur Landing Campbell 0.21 mi ~5 min
Transit West Hamilton Avenue & Millich Drive 0.24 mi ~5 min
Parking 0.25 mi ~5 min
Transit West Campbell Avenue & Llewellyn Avenue 0.27 mi ~6 min
Restaurant Brew City Grill 0.32 mi ~7 min
651 West Hamilton Avenue, Campbell 95008
Coffee Starbucks 0.35 mi ~8 min
EV charging ChargePoint 0.38 mi ~8 min
Restaurant Negeen Restaurant 0.39 mi ~8 min
801 West Hamilton Avenue, San Jose 95008
Gas station Safeway Fuel Station 0.45 mi ~9 min
Gas station Speedway 0.47 mi ~10 min
Convenience Speedway 0.48 mi ~10 min
Grocery Safeway 0.49 mi ~10 min
950 West Hamilton Avenue, Campbell 95008
05:00-01:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
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 Case Manager/Care Coordinator covers
A person who provides case management services and assists an individual in gaining access to needed medical, social, educational, and/or other services. The person has the ability to provide an assessment and review of completed plan of care on a periodic basis. This person is also able to take collaborative action to coordinate the services with other providers and monitor the enrollee's progress toward the cost-effective achievement of objectives specified in the plan of care. Credentials may vary from an experience in the fields of psychology, social work, rehabilitation, nursing or a closely related human service field, to a related Assoc of Arts Degree or to nursing credentials. Some states may require certification in case management. NUCC Health Care Provider Taxonomy, code 171M00000X
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 | 1003053182 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 12, 2009 |
| Last updated | Jan 12, 2009 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
251 LLEWELLYN AVE Campbell, CA 95008 (408) 379-3790 |
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 | 0 | 3 | 0 | 5 | 3 | 1 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 5 | 6 | 1 | 7 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.