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ALEXANDER MASON
NPI 1508331752
Nurse Anesthetist, Certified Registered in Bronx, NY

Active since October 03, 2018
100/100
CMS Quality Rating
1825 EASTCHESTER ROAD, BRONX, NY 10461(718) 904-2872 Get Directions Write a Review

NPPES record last updated: October 3, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Alexander Mason NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALEXANDER MASON (NPI 1508331752) is an individual nurse anesthetist, certified registered in Bronx, New York, licensed in New York (659658) and active in the NPI registry since October 2018. He is affiliated with Montefiore Medical Center and is a graduate of Other (2018).

NPPES Registry Identity

NPI1508331752
Entity TypeIndividualMale
Primary Taxonomy367500000X
Provider Legal NameALEXANDER MASON
Location Address1825 EASTCHESTER ROADBronx, NY 10461
Mailing Address1825 Eastchester RoadBronx, NY 10461
Phone(718) 904-2872
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateOctober 3, 2018
✔ NPI 1508331752 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
License✔ Licensed in NY · 659658
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
1825 EASTCHESTER ROAD, Bronx, NY 10461
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alexander Mason is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8123369543
PECOS Enrollment IDI20190412001384

Medicare Billing Reassignments

2

Medicare enrollment records show Alexander Mason reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Montefiore Medical Center
2.7 mi
Anesthesiology
111 E 210TH ST
Bronx, NY 10467
  • Reassigned Medicare billing, New York enrollment
  • 5,251 clinicians in this Medicare group
NPI 1063525152 (914) 378-6021
Westchester Medical Center Advanced Physician Services PC
16 mi
Anesthesiology
100 WOODS RD, TAYLOR PAVILION - ROOM M229
Valhalla, NY 10595
  • Reassigned Medicare billing, New York enrollment
  • 1,663 clinicians in this Medicare group
NPI 1740687458 (914) 493-2844

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 2

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.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
20 services18 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
19 services19 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Montefiore Medical Center

Acute Care Hospitals · Bronx, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330059
Location111 East 210th StreetBronx, NY 10467 · Bronx County
Emergency services Birthing friendly

Westchester Medical Center

Acute Care Hospitals · Valhalla, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number330234
Location100 Woods RdValhalla, NY 10595 · Westchester County
Emergency services Birthing friendly

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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SHASHA NICOLE WILLIAMS LMSW
Social Worker
1825 EASTCHESTER ROAD
BRONX, NY 10461
Bronx County (718) 904-2707
IRINA ABAYEVA PA
Physician Assistant
1825 EASTCHESTER ROAD, MMC - DEPT OF MEDICINE
BRONX, NY 10461
Bronx County (718) 904-2400
MRS. SHEEBA CATHERINE PELLEGRINO N.P.
Nurse Practitioner (Family)
1825 EASTCHESTER ROAD
BRONX, NY 10461
Bronx County (718) 904-4032
NOEMI BOGARKA BARABAS
Physician Assistant
1825 EASTCHESTER ROAD
BRONX, NY 10461
Bronx County (718) 904-2000
DR. PETRA RIETSCHEL MD PHD
Internal Medicine (Hematology & Oncology)
1825 EASTCHESTER ROAD, RM 2S-55
BRONX, NY 10461
Bronx County (718) 904-2555
TERESA BERARDI PA
Physician Assistant
1825 EASTCHESTER ROAD
BRONX, NY 10461
Bronx County (718) 430-3204
DR. SAMEER AHMAD KHAN D.O.
Student in an Organized Health Care Education/Training Program
1825 EASTCHESTER ROAD
BRONX, NY 10461
Bronx County (718) 904-2000
BRIGID JOSEPH MD
Internal Medicine
1825 EASTCHESTER ROAD, WEILER - DEPT. OF MEDICINE
BRONX, NY 10461
Bronx County (718) 904-2400

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 Alexander Mason's NPI number?

The NPI number for Alexander Mason is 1508331752. It was assigned to this individual provider in the NPPES registry on October 3, 2018.

Where is Alexander Mason located?

Alexander Mason practices at 1825 Eastchester Road, Bronx, NY 10461. The listed phone number is (718) 904-2872.

What is Alexander Mason's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Alexander Mason enrolled in Medicare?

Yes. Alexander Mason is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Alexander Mason's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Mason reassigns Medicare benefits to 2 organizations: Montefiore Medical Center (Bronx, NY) and Westchester Medical Center Advanced Physician Services PC (Valhalla, NY). 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 Alexander Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Alexander Mason affiliated with any hospitals?

According to CMS data, Alexander Mason is affiliated with Montefiore Medical Center and Westchester Medical Center.

When was this NPI record last updated?

The NPPES record for Alexander Mason was last updated on October 3, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.