Quick answers
- Which hospitals does Carmen Lam work at?
- Medicare's official clinician data lists Carmen Lam at 5 hospitals: Alta Bates Summit Medical Center, John Muir Medical Center - Concord Campus, John Muir Medical Center - Walnut Creek Campus, Stanford Health Care Tri-Valley and Sutter Delta Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Carmen Lam see patients?
- Medicare's clinician data lists 2 practice locations, including Walnut Creek, CA and Antioch, CA. Call before your visit to confirm the address.
- What is Carmen Lam's specialty?
- Medicare lists Surgical Oncology as the primary specialty.
- Does Carmen Lam accept Medicare assignment?
- Yes. Medicare's clinician data says Carmen Lam 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.
- Does Carmen Lam offer telehealth?
- Medicare's clinician data says Carmen Lam offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Carmen Lam?
- (925) 391-2221, as listed in official Medicare / NPI Registry data.
- What is Carmen Lam's NPI number?
- 1477904837. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Carmen Lam works
Medicare's Facility Affiliation Data lists Carmen Lam at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alta Bates Summit Medical CenterOakland, CA · Acute Care Hospital · CCN 050043
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · CCN 050496
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · CCN 050180
- Stanford Health Care Tri-ValleyPleasanton, CA · Acute Care Hospital · CCN 050283
- Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · CCN 050523
Practice locations
Addresses where Carmen Lam is enrolled with Medicare (CMS data updated 2026-10-02).
- 3003 Oak Rd, Suite 104Walnut Creek, CA 94597 (925) 391‑2221
- 4721 Dallas Ranch RdAntioch, CA 94531 (925) 778‑0679
Group practices
Medicare enrollment lists Carmen Lam as a member of this group (CMS data updated 2026-10-02).
- Epic Care55 clinicians in the group
Specialties
- Surgical Oncologyprimary
Other surgical oncologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Touro Un Col Of Osteopathic Medicine, Henderson |
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1477904837 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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