Marc H. Shomer, Md, Phd, INC in Upland, CA
This organization bills under NPI 1427380070, an organization record issued on Feb 8, 2010 with the primary taxonomy Multi-Specialty Clinic/Center. Each clinician who works there has their own NPI and license.
Organization recordNPPES, Aug 2026
1427380070
- Legal name
- Marc H. Shomer, Md, Phd, INC
- Entity
- Type 2 · organization
- Primary taxonomy
- Multi-Specialty Clinic/Center 261QM1300X
- Practice location
- 1298 W 7TH ST, Upland, CA 91786
- Phone
- 909-981-9800
- Mailing address
- Dana Point, CA
- Enumerated
- Feb 8, 2010
- Record updated
- Jul 21, 2026
- Authorized official
- Ceo (title as filed)
2 clinicians CMS lists with Marc H Shomer Md Phd in Upland
- Robert Gunzenhauser, MDOphthalmology Physician1457988065
- Marc Shomer, MD, PHDOphthalmology Physician1457457483
Source: CMS Doctors and Clinicians group affiliations, matched by practice name and city.
Checking an organization
- Confirm the business with the California secretary of state.
- Check the HHS-OIG exclusion list for the organization.
- Verify each clinician on their own record and the state license search.
Common questions
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.