John M. Maggiano, M.D.
Ophthalmology Physician · Santa Ana, CA
John M. Maggiano, M.D. is an ophthalmology physician with a practice address in Santa Ana, California, and NPI 1750386546, issued on Jun 17, 2005. Check the license (California G032444, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John M. Maggiano
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G032444 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 N Tustin Ave, Santa Ana, CA 92705
- Phone
- (714) 972-8235
- Enumerated
- Jun 17, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (714) 972-4715
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 1200 N Tustin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John M. Maggiano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G032444Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
John M. Maggiano among 2,899 ophthalmology physician records in California
John M. Maggiano, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2026 · 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 Santa Ana → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Paul Brailsford, M.D.Santa Ana, CA 927051770543118
- Sanford Chen, M.D.Santa Ana, CA 927051427051994
- William Gaffney, M.D.North Tustin, CA 927051407278179
- Richard Hill, M.D.Santa Ana, CA 927051255482055
- Timothy Huang, M.D.Santa Ana, CA 927051992742613
- Michael Lappin, MDSanta Ana, CA 927051497829006
- Rajiv Rathod, MDSanta Ana, CA 927051821201351
- David Sacks, MDSanta Ana, CA 927051114087764
Common questions
What is John M. Maggiano, M.D.'s NPI number?
John M. Maggiano, M.D.'s National Provider Identifier (NPI) is 1750386546, issued on Jun 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John M. Maggiano, M.D. located?
The NPPES record lists a practice address at 1200 N Tustin Ave, Santa Ana, CA, 92705. Phone: (714) 972-8235. Providers update this record themselves, so call before visiting.
How can I verify John M. Maggiano, M.D.'s license?
NPPES lists California license number G032444, 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.
What is John M. Maggiano, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.