Quick answers
- Where does Michael S. Hamman see patients?
- Medicare's clinician data lists 1 practice location in San Diego, CA. Call before your visit to confirm the address.
- What is Michael S. Hamman's specialty?
- Medicare lists Micrographic Dermatologic Surgery (MDS) as the primary specialty, and also Dermatology.
- Does Michael S. Hamman accept Medicare assignment?
- Yes. Medicare's clinician data says Michael S. Hamman 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 Michael S. Hamman?
- (858) 454-4300, as listed in official Medicare / NPI Registry data.
- What is Michael S. Hamman's NPI number?
- 1538346911. 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 Michael S. Hamman is enrolled with Medicare (CMS data updated 2026-10-02).
- 9339 Genesee Ave, Suite 350San Diego, CA 92121 (858) 454‑4300
Group practices
Medicare enrollment lists Michael S. Hamman as a member of this group (CMS data updated 2026-10-02).
- J Robert West MD Inc138 clinicians in the group
Specialties
Find other Micrographic Dermatologic Surgery (MDS) doctors in California →
Other dermatologic surgeons in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538346911 |
| 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