Doctor profile · Federal record
Dr. William Mathias, PA-C
Physician Assistant · Physician Assistant · San Marcos, CA
- NPI 1285806323
- Accepts Medicare
- 4 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
150 Valpreda RD
San Marcos, CA 920692973
(760) 736-6767 - Mailing address
-
814 Hinman Ave Unit 1
Evanston, IL 602022360
Credentials & registration
- NPI registered
- March 2008 — 18 yrs on file
- Profile last updated
- March 28, 2023
- Year of graduation
- 2022 — 4 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State licenses (2)
- California #59627 · Illinois #085.004666
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1285806323. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$224
Transactions
9
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 2 | $57.04 | |
| Novo Nordisk INC | 2 | $43.50 | |
| Dexcom, INC. | 1 | $28.33 | |
| Hologic Sales and Service, LLC | 1 | $28.11 | |
| Seqirus USA INC | 1 | $25.86 | |
| Abbott Laboratories | 1 | $22.46 | |
| Astellas Pharma US INC | 1 | $18.61 |
By nature of payment
Frequently asked questions
What is Dr. William Mathias's medical specialty?
Dr. William Mathias practices Physician Assistant in San Marcos, CA.
Where does Dr. William Mathias practice?
Dr. William Mathias practices at 150 Valpreda RD, San Marcos, CA 920692973. Office phone: 7607366767.
What is Dr. William Mathias's NPI?
Dr. William Mathias's National Provider Identifier (NPI) is 1285806323, issued by NPPES.
Does Dr. William Mathias accept Medicare assignment?
Yes. Dr. William Mathias accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.