DR. JOHN M MAGGIANO M.D.
NPI 1750386546
Ophthalmology in Santa Ana, CA
About Dr. John M Maggiano M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN M MAGGIANO M.D. (NPI 1750386546) is an individual ophthalmology provider in Santa Ana, California, licensed in California (G032444) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John M Maggiano M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Maggiano reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Ana, CA 92705
- Reassigned Medicare billing, California enrollment
- 7 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92705 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SANTA ANA, CA 92705
SANTA ANA, CA 92705
SANTA ANA, CA 92705
SANTA ANA, CA 92705
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Maggiano's NPI number?
The NPI number for John Maggiano is 1750386546. It was assigned to this individual provider in the NPPES registry on June 17, 2005.
Where is John Maggiano located?
John Maggiano practices at 1200 N Tustin Ave Ste 140, Santa Ana, CA 92705. The listed phone number is (714) 972-8235.
What is John Maggiano's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is John Maggiano enrolled in Medicare?
Yes. John Maggiano is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Maggiano's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Maggiano reassigns Medicare benefits to Orange County Retina Medical Group (Santa Ana, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Maggiano's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Maggiano was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.