NPPES file of Aug 9, 2026

Hans Dieter Hertzog, M.D.

Ophthalmology Physician · Long Beach, CA

Hans Dieter Hertzog, M.D. is an ophthalmology physician with a practice address in Long Beach, California, and NPI 1851616064, issued on Mar 30, 2010. Check the license (California A118549, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851616064
Name
Hans Dieter Hertzog
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
A118549 CA
Self-reported in NPPES; status is on the state search
Practice location
5094 E Los Coyotes Diagonal, Long Beach, CA 90815
Phone
(562) 597-3100
Enumerated
Mar 30, 2010
Record last updated
May 16, 2023
Medicare enrollment
Enrolled (PECOS I20140611000851); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 2010
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5094 E Los Coyotes Diagonal

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

  1. Leif Hertzog, MDOphthalmology Physician1528139367

Verify Hans Dieter Hertzog in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A118549
    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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26% more Medicare Part D claims than the average ophthalmology physician in 2024

1,906 Medicare Part D claims for 524 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.

  1. Hans Hertzog1,906
  2. Specialty average1,518

Most prescribed

  1. Latanoprost910 claims
  2. Timolol Maleate181 claims
  3. Neomycin-Polymyxin-Dexameth122 claims
  4. Prednisolone Acetate92 claims
  5. Dorzolamide-Timolol77 claims
  6. Rocklatan68 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 93.7 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score100.0
  2. Costout of 100 · 30%78.8
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $97.60

3 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. 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.

  1. Hans Hertzog$97.60
  2. Specialty average$4,535.02

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Hertzog Eye Associates A Medical CorporationLong Beach, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Hans Dieter Hertzog among 2,899 ophthalmology physician records in California

Hans Dieter Hertzog, 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 2010, is newer than 74% of them.

  • NPI issued2010 · 74% of these records are older, 24% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2010 · median 2001 among the 1,907 with a school on file
  • Record last updated2023 · 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.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Leif Hertzog, MDLong Beach, CA 908151528139367
  2. Maltish LorenzoLong Beach, CA 908151760010276
  3. Ravi Menghani, M.D., MBALong Beach, CA 908151518285360
  4. Katherine Tanaka, M.D.Long Beach, CA 908151336344878
  5. Merrill Knopf, M.D.Long Beach, CA 908131841294733
  6. Myles Brookman, MDLong Beach, CA 908081063874139
  7. Garrick Chak, M.D.Long Beach, CA 908221497047526
  8. Ronald Gaster, MDLong Beach, CA 908221306940325

Common questions

What is Hans Dieter Hertzog, M.D.'s NPI number?

Hans Dieter Hertzog, M.D.'s National Provider Identifier (NPI) is 1851616064, issued on Mar 30, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Hans Dieter Hertzog, M.D. located?

The NPPES record lists a practice address at 5094 E Los Coyotes Diagonal, Long Beach, CA, 90815. Phone: (562) 597-3100. Providers update this record themselves, so call before visiting.

How can I verify Hans Dieter Hertzog, M.D.'s license?

NPPES lists California license number A118549, 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.

How much does Hans Dieter Hertzog, M.D. prescribe under Medicare Part D?

In 2024, Hans Dieter Hertzog, M.D. had 1,906 Medicare Part D claims for 524 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

What is Hans Dieter Hertzog, M.D.'s MIPS final score?

The 2023 MIPS final score is 93.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.