Craig Mcmillan, M.D.
Craig Mcmillan, M.D. is a Public Health & General Preventive Medicine Physician in San Luis Obispo, CA, registered under NPI 1003094715. 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 San Luis Obispo, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 325 ft away. The nearest transit stop is 627 ft away, served by 1. If you arrive early, there is a coffee shop 0.50 mi away.
Getting here and what is nearby
Parking 77 ft ~1 min
Transit 1 130 ft ~1 min
Transit Johnson at Bishop 159 ft ~1 min
Parking 304 ft ~2 min
Parking 325 ft ~2 min
Transit 1 627 ft ~3 min
Coffee La Cuesta Lounge Cafe Car 0.50 mi ~10 min
Restaurant Cafe Roma 0.50 mi ~11 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| G16808 | CA | Public Health & General Preventive… primary |
This provider holds licence G16808 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 Public Health & General Preventive Medicine covers
Public health and general preventive medicine focuses on promoting health, preventing disease, and managing the health of communities and defined populations. These practitioners combine population-based public health skills with knowledge of primary, secondary, and tertiary prevention-oriented clinical practice in a wide variety of settings. NUCC Health Care Provider Taxonomy, code 2083P0901X
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 | 1003094715 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 5, 2008 |
| Last updated | Feb 5, 2008 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | M.D. |
| Practice address |
2191 JOHNSON AVE San Luis Obispo, CA 93401 (805) 781-5519 |
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 | 9 | 4 | 7 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 9 | 8 | 7 | 2 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.