Mark S. Borchert, M.D.
Ophthalmology Physician · Los Angeles, CA
Mark S. Borchert, M.D. is an ophthalmology physician with a practice address in Los Angeles, California, and NPI 1548200082, issued on Jun 6, 2006. Check the license (California C41974, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark S. Borchert
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- C41974 CA
53565 MA
Self-reported in NPPES; status is on the state search - Practice location
- 4650 W Sunset Blvd, Los Angeles, CA 90027
- Phone
- (213) 669-4510
- Enumerated
- Jun 6, 2006
- Record last updated
- Oct 23, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 4650 W Sunset Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark S. Borchert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C41974Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $336.94
3 payments; by number, the most common kind was food and beverage; the largest payer was Alexion Pharmaceuticals, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mark S. Borchert among 2,899 ophthalmology physician records in California
Mark S. Borchert, M.D. is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2020 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Los Angeles → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Arnold Barron, MDLos Angeles, CA 900271013084011
- Angela Buffenn, MDLos Angeles, CA 900271508957895
- Melvin Dea, M.D., PH.D.Los Angeles, CA 900271780630467
- Ervin Fang, MDLos Angeles, CA 900271205907276
- Alan Koerner, MDLos Angeles, CA 900271942369699
- David Marlin, MDLos Angeles, CA 900271346317237
- Ellen Matsumoto, ODLos Angeles, CA 900271558452441
- Arlanna Moshfeghi, MDLos Angeles, CA 900271659390938
Common questions
What is Mark S. Borchert, M.D.'s NPI number?
Mark S. Borchert, M.D.'s National Provider Identifier (NPI) is 1548200082, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark S. Borchert, M.D. located?
The NPPES record lists a practice address at 4650 W Sunset Blvd, Los Angeles, CA, 90027. Phone: (213) 669-4510. Providers update this record themselves, so call before visiting.
How can I verify Mark S. Borchert, M.D.'s license?
NPPES lists California license number C41974, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.