OLIVIA GILMAN MALLARI MD
NPI 1376123505
Anesthesiology - Critical Care Medicine in New York, NY
About Olivia Gilman Mallari Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OLIVIA GILMAN MALLARI MD (NPI 1376123505) is an individual critical care medicine provider in New York, New York, licensed in New York (337455) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2021).
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)
Olivia Gilman Mallari Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Olivia Mallari reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10032
- Reassigned Medicare billing, New York enrollment
- 3,922 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.
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.
NEW YORK, NY 10032
NEW YORK, NY 10032
NEW YORK, NY 10032
NEW YORK, NY 10032
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 Olivia Mallari's NPI number?
The NPI number for Olivia Mallari is 1376123505. It was assigned to this individual provider in the NPPES registry on April 12, 2021.
Where is Olivia Mallari located?
Olivia Mallari practices at 622 W 168th St, New York, NY 10032. The listed phone number is (212) 305-3226.
What is Olivia Mallari's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Critical Care Medicine, with taxonomy code 207LC0200X.
Is Olivia Mallari enrolled in Medicare?
Yes. Olivia Mallari is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Olivia Mallari's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Olivia Mallari reassigns Medicare benefits to Trustees Of Columbia University In The City Of New York (New York, NY). 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 Olivia Mallari'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 Olivia Mallari was last updated on October 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days 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.
# Olivia Gilman Mallari, MD · NPI 1376123505
Critical Care Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since April 12, 2021.
## Identity
- **NPI:** 1376123505 (Entity type: Individual)
- **Enumerated:** April 12, 2021
- **Primary specialty:** Anesthesiology - Critical Care Medicine · taxonomy 207LC0200X
- **State license:** 337455 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 622 W 168TH ST, New York, NY 10032-3720
- **Phone:** (212) 305-3226
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Trustees Of Columbia University In The City Of New York (NPI 1508266347, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** October 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1376123505) · Data from the CMS NPPES public registry.