Quick answers
- Where does Timothy J. Lopez see patients?
- Medicare's clinician data lists 1 practice location in Pasadena, CA. Call before your visit to confirm the address.
- What is Timothy J. Lopez's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Timothy J. Lopez accept Medicare assignment?
- Yes. Medicare's clinician data says Timothy J. Lopez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Timothy J. Lopez?
- (626) 304-4400, as listed in official Medicare / NPI Registry data.
- What is Timothy J. Lopez's NPI number?
- 1710257597. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Timothy J. Lopez is enrolled with Medicare (CMS data updated 2026-10-02).
- 401 S Fair Oaks AvePasadena, CA 91105 (626) 304‑4400
Group practices
Medicare enrollment lists Timothy J. Lopez as a member of this group (CMS data updated 2026-10-02).
- Healthcare Partners Affiliates Medical Group754 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Pasadena
Clinicians with the same Medicare primary specialty in Pasadena, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1710257597 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians