Leif Hertzog, MD
NPI 1528139367 · Ophthalmology Physician · Long Beach, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leif Hertzog, MD is a Ophthalmology Physician provider in Long Beach, CA (NPI 1528139367).
Provider details
- NPI number
- 1528139367
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G52761 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
972 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 506 | $132 |
| Imaging of Retina92134 | 156 | $42 |
| Photography of the Retina92250 | 102 | $38 |
| Imaging of Optic Nerve92133 | 66 | $38 |
| Established Patient Problem Focused Exam of Visual System92012 | 54 | $93 |
| Exam of Visual Field With Extended Testing92083 | 44 | $67 |
| New Patient Complete Exam of Visual System92004 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 309 | 76 |
| Timolol Maleate | 104 | 26 |
| Brimonidine Tartrate | 26 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 18 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-13
- Last updated
- 2023-07-12
- Certified
- 2023-07-12
Frequently asked questions
- What is Leif Hertzog's NPI number?
- Leif Hertzog's National Provider Identifier (NPI) is 1528139367, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leif Hertzog's specialty?
- Leif Hertzog is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Leif Hertzog located?
- Leif Hertzog's practice location on file with NPPES is 5094 E Los Coyotes Diagonal, Long Beach, CA 90815-2839.
- What is Leif Hertzog's phone number?
- The practice phone number listed in the NPPES registry for Leif Hertzog is (562) 597-3100.
- Does Leif Hertzog accept Medicare?
- Leif Hertzog is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leif Hertzog's NPI active?
- Yes — Leif Hertzog's NPI (1528139367) is active in the NPPES registry as of the last update on 2023-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.