Timothy Lee, DO
Timothy Lee, DO is a Pain Medicine (Physical Medicine & Rehabilitation) Physician in Riverside, CA, registered under NPI 1801424734. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 4500 BROCKTON AVE STE 105, Riverside, CA 92501. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 20A23559 | CA | Pain Medicine (Physical Medicine &… primary |
This provider holds licence 20A23559 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 - Physical Medicine And Rehabilitation
- PAC ID
- 2961949037
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| District of Columbia | I20240807001098 | Practitioner - Physical Medicine And Rehabilitation |
| California | I20250827004015 | Practitioner - Physical Medicine And Rehabilitation |
Medicare enrolment is recorded as approved under the provider type Practitioner - Physical Medicine And Rehabilitation. There are 2 separate enrolment records across 2 states (DC, CA). 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 Pain Medicine covers
A physician who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic or cancer pain in both hospital and ambulatory settings. Patient care needs may also be coordinated with other specialists. NUCC Health Care Provider Taxonomy, code 2081P2900X
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 | 1801424734 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 27, 2020 |
| Last updated | Aug 29, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | DO |
| Practice address |
4500 BROCKTON AVE STE 105 Riverside, CA 92501 (951) 784-4088 |
| Mailing address |
18838 ALDRIDGE PL Rowland Heights, CA 91748 |
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 | 8 | 0 | 1 | 4 | 2 | 4 | 7 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 0 | 1 | 8 | 2 | 8 | 7 | 6 |
Sum = 66 · next multiple of 10 = 70 · 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.