William Moss, M.D.
William Moss, M.D. is a provider specialising in Student in an Organized Health Care Education/Training Program in San Diego, CA, registered under NPI 1003182395. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. 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 Diego, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 760 ft away at Arbor Parking Structure. The nearest transit stop is 696 ft away, served by Front St & Arbor Dr (UCSD). A pharmacy sits 0.49 mi from the entrance (Hillcrest Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.49 mi away.
Getting here and what is nearby
Transit 581 ft ~3 min
Transit Hillcrest Medical Center 606 ft ~3 min
Transit Front St & Arbor Dr (UCSD) 696 ft ~3 min
Parking 663 ft ~3 min
Parking First Avenue Parking Structure 695 ft ~3 min
Parking Arbor Parking Structure 760 ft ~3 min
Hotel Super 8 by Wyndham San Diego Hotel Circle 0.32 mi ~7 min
Hotel Days Inn San Diego Hotel Circle Near SeaWorld 0.33 mi ~7 min
Hotel Courtyard San Diego Mission Valley/Hotel Circle 0.34 mi ~7 min
Grocery lazy acres market 0.35 mi ~8 min
Restaurant Jack in the Box 0.36 mi ~8 min
Restaurant BunZ 0.36 mi ~8 min
475 Hotel Circle South, San Diego 92108
Mo-Sa 06:30-21:00, Su07:00-21:00
Restaurant Panda Express 0.38 mi ~8 min
120 Washington Street, San Diego 92103
Mo-Th 09:30-21:30; Fr 09:00-22:00; Sa 10:00-21:30; Su 09:30-21:30
Convenience Shell 0.40 mi ~9 min
Gas station Shell 0.41 mi ~9 min
Coffee Starbucks 0.43 mi ~9 min
Pharmacy CVS Pharmacy 0.43 mi ~9 min
Convenience Hills Wine and Spirits 0.44 mi ~9 min
Grocery Pavilions 0.44 mi ~9 min
Coffee Starbucks 0.46 mi ~10 min
784 West Washington Street, Mission Hills Commons 92103
Coffee Kona Coffee 0.49 mi ~10 min
Pharmacy Hillcrest Pharmacy 0.49 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
| Licence | State | Specialty |
|---|---|---|
| A129081 | CA | Otolaryngology Physician |
This provider holds licence A129081 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Otolaryngology
- PAC ID
- 4587971817
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| California | I20150917002653 | Practitioner - Otolaryngology |
| Northern Mariana Islands | I20180810000208 | Practitioner - Otolaryngology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Otolaryngology. There are 2 separate enrolment records across 2 states (CA, MP). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Student in an Organized Health Care Education/Training Program covers
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care. NUCC Health Care Provider Taxonomy, code 390200000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — | primary |
| 207Y00000X | Otolaryngology Physician | A129081 | 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-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 | 1003182395 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 30, 2012 |
| Last updated | Sep 3, 2015 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | M.D. |
| Practice address |
200 W ARBOR DR San Diego, CA 92103 (508) 395-4189 Fax (555) 555-5555 |
| Mailing address |
622 PHEASANT HL Acton, MA 01718 |
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 | 1 | 8 | 2 | 3 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 8 | 4 | 3 | 9 |
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.