John Zdral, MD
NPI 1801993944 · Ophthalmology Physician · Fullerton, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Zdral, MD is a Ophthalmology Physician provider in Fullerton, CA (NPI 1801993944).
Provider details
- NPI number
- 1801993944
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G080899 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,099 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Problem Focused Exam of Visual System92012 | 793 | $103 |
| Established Patient Complete Exam of Visual System92014 | 708 | $145 |
| Photography of the Retina92250 | 533 | $41 |
| Imaging of Optic Nerve92133 | 238 | $42 |
| Exam of Visual Field With Extended Testing92083 | 212 | $74 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 166 | $46 |
| New Patient Complete Exam of Visual System |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,245 | 365 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 596 | 151 |
| Brimonidine Tartrate | 392 | 107 |
| Timolol Maleate | 310 | 108 |
| Brimonidine Tartratebrand: Alphagan P | 99 | 26 |
| Travoprost | 91 | 23 |
| Dorzolamide Hcl | 86 | 37 |
| Prednisolone Acetate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$39 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2008-02-28
Frequently asked questions
- What is John Zdral's NPI number?
- John Zdral's National Provider Identifier (NPI) is 1801993944, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Zdral's specialty?
- John Zdral is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is John Zdral located?
- John Zdral's practice location on file with NPPES is 301 W Bastanchury Rd, Fullerton, CA 92835.
- What is John Zdral's phone number?
- The practice phone number listed in the NPPES registry for John Zdral is (714) 879-7372.
- Does John Zdral accept Medicare?
- John Zdral is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Zdral's NPI active?
- Yes — John Zdral's NPI (1801993944) is active in the NPPES registry as of the last update on 2008-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.