SABU JOHN & MARY MALLAPPALLIL PHYSICIAN P.C
NPI 1821312083
Internal Medicine - Cardiovascular Disease in Brooklyn, NY
About Sabu John & Mary Mallappallil Physician P.c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SABU JOHN & MARY MALLAPPALLIL PHYSICIAN P.C (NPI 1821312083) is a healthcare organization registered as a cardiovascular disease in Brooklyn, New York and active in the NPI registry since March 2010. The organization lists Sabu John, M.d, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 3
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sabu John & Mary Mallappallil Physician P.c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Sabu John & Mary Mallappallil Physician P.C, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Sabu John & Mary Mallappallil Physician P.C's NPI number?
The NPI number for Sabu John & Mary Mallappallil Physician P.C is 1821312083. It was assigned to this organization in the NPPES registry on March 17, 2010.
Where is Sabu John & Mary Mallappallil Physician P.C located?
Sabu John & Mary Mallappallil Physician P.C is located at 322 Linden Blvd, Brooklyn, NY 11226. The listed phone number is (718) 282-0801.
What is Sabu John & Mary Mallappallil Physician P.C's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Sabu John & Mary Mallappallil Physician P.C enrolled in Medicare?
Yes. Sabu John & Mary Mallappallil Physician P.C is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Sabu John & Mary Mallappallil Physician P.C?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Cardiovascular Disease (Cardiology)) reassigns their Medicare billing to Sabu John & Mary Mallappallil Physician P.C. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Sabu John & Mary Mallappallil Physician P.C was last updated on April 21, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Sabu John & Mary Mallappallil Physician P.c · NPI 1821312083
Cardiovascular Disease organization in Brooklyn, New York. Organization record, active in the CMS NPPES registry since March 17, 2010.
## Identity
- **NPI:** 1821312083 (Entity type: Organization)
- **Enumerated:** March 17, 2010
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **Organization subpart:** No
- **Authorized official:** Sabu John, M.D
## Practice location
- **Address:** 322 LINDEN BLVD, Brooklyn, NY 11226
- **Phone:** (718) 282-0801 · **Fax:** (718) 282-8284
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Cardiovascular Disease (Cardiology)) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 21, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1821312083) · Data from the CMS NPPES public registry.