John Francis Maher, M.D.
Ophthalmology Physician · Torrance, CA
John Francis Maher, M.D. is an ophthalmology physician with a practice address in Torrance, California, and NPI 1265561211, issued on Mar 5, 2007. Check the license (California G54565, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Francis Maher
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G54565 CA
Self-reported in NPPES; status is on the state search - Practice location
- 22924 Crenshaw Blvd, Torrance, CA 90505
- Phone
- (424) 328-0091
- Enumerated
- Mar 5, 2007
- Record last updated
- Oct 4, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (424) 328-0094
- Medicaid ID
- 00G545651 CA
- Medicare enrollment
- Enrolled (PECOS I20051028000884); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 22924 Crenshaw Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Theodore Georgis, M.D.Orthopaedic Surgery of the Spine Physician1487889556
Verify John Francis Maher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G54565Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% more Medicare Part D claims than the average ophthalmology physician in 2024
2,154 Medicare Part D claims for 578 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Prednisolone Acetate531 claims
- Latanoprost428 claims
- Ofloxacin362 claims
- Timolol Maleate161 claims
- Brimonidine Tartrate110 claims
- Dorzolamide-Timolol82 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 MIPS final score for 2023 (Medicare payment program): 16.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $249.64
2 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. 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.
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
- Marshall B Ketchum UniversityAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Francis Maher among 2,899 ophthalmology physician records in California
John Francis Maher, 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 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1981 · median 2001 among the 1,907 with a school on file
- Record last updated2017 · 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.
All 2,899 in California → Every provider in Torrance → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Damien Goldberg, M.D.Torrance, CA 905051891833695
- Steven Khwarg, MDTorrance, CA 905051316007230
- Amr KouchoukTorrance, CA 905051639499718
- Alex Liu, M.D.Torrance, CA 905051275553158
- Angus Macdonald, MDTorrance, CA 905051023164415
- Alfred Marrone, M.D.Torrance, CA 905051841388907
- Lydia Matkovich, M.D.Torrance, CA 905051508801028
- Douglas Sakamoto, M.D.Torrance, CA 905051871566554
Common questions
What is John Francis Maher, M.D.'s NPI number?
John Francis Maher, M.D.'s National Provider Identifier (NPI) is 1265561211, issued on Mar 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Francis Maher, M.D. located?
The NPPES record lists a practice address at 22924 Crenshaw Blvd, Torrance, CA, 90505. Phone: (424) 328-0091. Providers update this record themselves, so call before visiting.
How can I verify John Francis Maher, M.D.'s license?
NPPES lists California license number G54565, 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 John Francis Maher, M.D. prescribe under Medicare Part D?
In 2024, John Francis Maher, M.D. had 2,154 Medicare Part D claims for 578 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is John Francis Maher, M.D.'s MIPS final score?
The 2023 MIPS final score is 16.6 of 100. 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.