Quick answers
- Where does Lance W. Chapman see patients?
- Medicare's clinician data lists 2 practice locations, including Seal Beach, CA and Hesperia, CA. Call before your visit to confirm the address.
- What is Lance W. Chapman's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Lance W. Chapman accept Medicare assignment?
- Yes. Medicare's clinician data says Lance W. Chapman 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 Lance W. Chapman?
- (562) 444-8800, as listed in official Medicare / NPI Registry data.
- What is Lance W. Chapman's NPI number?
- 1194143438. 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 Lance W. Chapman is enrolled with Medicare (CMS data updated 2026-10-02).
- 13928 Seal Beach BlvdSeal Beach, CA 90740 (562) 444‑8800
- 16785 Bear Valley Rd, Suite 5Hesperia, CA 92345 (760) 951‑7762
Group practices
Medicare enrollment lists Lance W. Chapman as a member of these groups (CMS data updated 2026-10-02).
- Island Dermatology, Inc.27 clinicians in the group
- Howard Fein MD Inc14 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194143438 |
| 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