NPPES file of Aug 9, 2026

Katherine Bergwerk, MD

Ophthalmology Physician · Los Angeles, CA

Katherine Bergwerk, MD is an ophthalmology physician with a practice address in Los Angeles, California, and NPI 1952323941, issued on Jul 25, 2006. Check the license (California G83716, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1952323941
Name
Katherine Bergwerk
Credential
MD
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
G83716 CA
Self-reported in NPPES; status is on the state search
Practice location
100 Stein Plz, Los Angeles, CA 90095
Phone
(310) 825-5000
Enumerated
Jul 25, 2006
Record last updated
Apr 21, 2010 (not updated in 16 years: call before relying on the address or phone)
Medicaid ID
00G837160 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 100 Stein Plz

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Diana Abrahamyan, ODOptometrist1538834932
  2. Diego AriasOphthalmology Physician1346998093
  3. Reginald Ariyasu, MDOphthalmology Physician1285654939
  4. William Astle, MDOphthalmology Physician1700808276
  5. Adrian Au, MDRetina Specialist (Ophthalmology) Physician1124482450
  6. Saghar Bagheri, MDGlaucoma Specialist (Ophthalmology) Physician1821627399

Verify Katherine Bergwerk in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G83716
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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Ophthalmology Physician providers in California

There are 2,899 ophthalmology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other ophthalmology physician records in California

  1. Sam Abbassi, MD, MSWest Hills, CA1881937720
  2. Richard Abbott, M.D.San Francisco, CA1346276573
  3. Jean-Paul Abboud, M.D., PH.D.Del Mar, CA1760776728
  4. Nizar Abdelfattah, MDPasadena, CA1801359393
  5. Parastou Abedi, MDAliso Viejo, CA1720067333
  6. Shahla Abedi, MDAliso Viejo, CA1467431072
  7. Lilit Ablabutyan, M.D.Glendale, CA1497013064
  8. Nathan Abraham, M.D.Valencia, CA1306224456
  9. James Abrams, M.D.San Bruno, CA1912903329
  10. Adam Abroms, MDWestlake Village, CA1497743702

Common questions

What is Katherine Bergwerk, MD's NPI number?

Katherine Bergwerk, MD's National Provider Identifier (NPI) is 1952323941, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Bergwerk, MD located?

The NPPES record lists a practice address at 100 Stein Plz, Los Angeles, CA, 90095. Phone: (310) 825-5000. Providers update this record themselves, so call before visiting.

How can I verify Katherine Bergwerk, MD's license?

NPPES lists California license number G83716, 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. 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.