Layne Hamilton
Layne Hamilton is a Mental Health Counselor in Richmond, CA, registered under NPI 1003339144.
Getting there
Here is what surrounds this office in Richmond, based on OpenStreetMap data collected Sep 19, 2026. Parking is available about 0.34 mi away. There is EV charging 0.30 mi from the office (Electrify America) — useful if you are driving in from out of town. The nearest transit stop is 690 ft away, served by MacDonald Avenue & 39th Street.
Getting here and what is nearby
Transit MacDonald Avenue & 37th Street 240 ft ~1 min
Transit MacDonald Avenue & 37th Street 267 ft ~2 min
Transit MacDonald Avenue & 39th Street 690 ft ~3 min
Parking 742 ft ~3 min
Parking 0.22 mi ~5 min
Restaurant Panda Express 0.26 mi ~6 min
4250 Macdonald Avenue, Richmond 94805
09:30-22:30
Restaurant Subway 0.26 mi ~6 min
4250 Macdonald Avenue, Richmond 94805
08:00-24:00
EV charging Electrify America 0.30 mi ~6 min
Parking 0.34 mi ~7 min
Restaurant Brazuca Açaí 0.48 mi ~10 min
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 Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YM0800X
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 | 1003339144 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 20, 2017 |
| Last updated | Jul 21, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
207 37TH ST Richmond, CA 94805 (510) 233-7555 |
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 | 3 | 3 | 9 | 1 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 3 | 9 | 1 | 8 |
Sum = 56 · next multiple of 10 = 60 · check digit = 4 · actual last digit = 4
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.