MARY C MALLAPPALLIL MD
NPI 1578586392
Internal Medicine - Nephrology in Port Washington, NY
About Mary C Mallappallil Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY C MALLAPPALLIL MD (NPI 1578586392) is an individual nephrology provider in Port Washington, New York, licensed in New York (215103-1) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Kings County Hospital Center, and is a graduate of State University Of New York Downstate Medical Center (1997).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Mary C Mallappallil Md 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 Reassignment
Medicare enrollment records show Mary Mallappallil reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Brooklyn, NY 11203
- Reassigned Medicare billing, New York enrollment
- 291 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
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Kings County Hospital Center
Acute Care Hospitals · Brooklyn, NYSuny/Downstate University Hospital Of Brooklyn
Acute Care Hospitals · Brooklyn, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11050 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORT WASHINGTON, NY 11050
PORT WASHINGTON, NY 11050
PORT WASHINGTON, NY 11050
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 Mary Mallappallil's NPI number?
The NPI number for Mary Mallappallil is 1578586392. It was assigned to this individual provider in the NPPES registry on July 25, 2006.
Where is Mary Mallappallil located?
Mary Mallappallil practices at 50 Seaview Blvd, Port Washington, NY 11050. The listed phone number is (516) 484-6093.
What is Mary Mallappallil's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Mary Mallappallil enrolled in Medicare?
Yes. Mary Mallappallil 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 organization bills Medicare for Mary Mallappallil's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Mallappallil reassigns Medicare benefits to University Physicians Of Brooklyn, Inc. (Brooklyn, 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 Mary Mallappallil's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Mary Mallappallil affiliated with any hospitals?
According to CMS data, Mary Mallappallil is affiliated with Kings County Hospital Center and Suny/Downstate University Hospital Of Brooklyn.
When was this NPI record last updated?
The NPPES record for Mary Mallappallil was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Mary C Mallappallil, MD · NPI 1578586392
Nephrology physician in Port Washington, New York. Individual provider, active in the CMS NPPES registry since July 25, 2006.
## Identity
- **NPI:** 1578586392 (Entity type: Individual)
- **Enumerated:** July 25, 2006
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 215103-1 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 50 SEAVIEW BLVD, Port Washington, NY 11050-4618
- **Phone:** (516) 484-6093 · **Fax:** (516) 484-6180
## 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:** University Physicians Of Brooklyn, Inc. (NPI 1467409912, Brooklyn, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York Downstate Medical Center, class of 1997
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare ID-Type Unspecified 6X6971 (NY); Medicare UPIN H66359 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1578586392) · Data from the CMS NPPES public registry.