John Maher, M.D.
NPI 1265561211 · Ophthalmology Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Maher, M.D. is a Ophthalmology Physician provider in Torrance, CA (NPI 1265561211).
Provider details
- NPI number
- 1265561211
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G54565 (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
6,399 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 Complete Exam of Visual System92014 | 1,911 | $139 |
| Photography of the Retina92250 | 850 | $39 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 629 | $138 |
| Exam of Visual Field With Extended Testing92083 | 540 | $71 |
| Imaging of Retina92134 | 469 | $44 |
| New Patient Complete Exam of Visual System92004 | 447 | $164 |
| Removal of Cataract With Insertion of Prosthetic Lens |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 531 | 340 |
| Latanoprost | 428 | 119 |
| Ofloxacin | 362 | 226 |
| Timolol Maleate | 161 | 47 |
| Brimonidine Tartrate | 110 | 34 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 82 | 21 |
| Bimatoprostbrand: Lumigan | 62 | 12 |
| Erythromycin Base |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$250 across 2 records (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
- 2007-03-05
- Last updated
- 2017-10-04
Frequently asked questions
- What is John Maher's NPI number?
- John Maher's National Provider Identifier (NPI) is 1265561211, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Maher's specialty?
- John Maher is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is John Maher located?
- John Maher's practice location on file with NPPES is 22924 Crenshaw Blvd, Torrance, CA 90505-3023.
- What is John Maher's phone number?
- The practice phone number listed in the NPPES registry for John Maher is (424) 328-0091.
- Does John Maher accept Medicare?
- John Maher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Maher's NPI active?
- Yes — John Maher's NPI (1265561211) is active in the NPPES registry as of the last update on 2017-10-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.