DR. LUCIANO CUSTO GREIG
NPI 1154850956
Ophthalmology in San Francisco, CA
About Dr. Luciano Custo Greig NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LUCIANO CUSTO GREIG (NPI 1154850956) is an individual ophthalmology provider in San Francisco, California, licensed in California (A164403) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Luciano Custo Greig is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Luciano Greig reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94107
- Reassigned Medicare billing, California enrollment
- 1,573 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 842 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 2,112 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
Los Angeles, CA 90033
- Reassigned Medicare billing, California enrollment
- 2,445 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94143
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 Luciano Greig's NPI number?
The NPI number for Luciano Greig is 1154850956. It was assigned to this individual provider in the NPPES registry on June 6, 2017.
Where is Luciano Greig located?
Luciano Greig practices at 490 Illinois St, San Francisco, CA 94143. The listed phone number is (415) 353-2800.
What is Luciano Greig's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Luciano Greig enrolled in Medicare?
Yes. Luciano Greig is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Luciano Greig's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Luciano Greig reassigns Medicare benefits to 6 organizations: City & County Of San Francisco (San Francisco, CA), University Of California Sfgh Medical Group (San Francisco, CA), Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and 1 more organization, listed in the Medicare section above. Each 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 Luciano Greig'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 Luciano Greig was last updated on October 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.
# Dr. Luciano Custo Greig · NPI 1154850956
Ophthalmology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since June 6, 2017.
## Identity
- **NPI:** 1154850956 (Entity type: Individual)
- **Enumerated:** June 6, 2017
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A164403 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 490 ILLINOIS ST, San Francisco, CA 94143-2510
- **Phone:** (415) 353-2800
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): City & County Of San Francisco (NPI 1013879139, San Francisco, CA); University Of California Sfgh Medical Group (NPI 1174598296, San Francisco, CA); Regents Of The University Of California (NPI 1235322348, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** October 2, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1154850956) · Data from the CMS NPPES public registry.