DR. ALEXANDER MARTIN SELBY MD
NPI 1306400627
Emergency Medicine in New York, NY
About Dr. Alexander Martin Selby Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALEXANDER MARTIN SELBY MD (NPI 1306400627) is an individual emergency medicine provider in New York, New York, licensed in New York (316808) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Lenox Hill Hospital, and is a graduate of New York Medical College (2019).
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 and accepts Medicare assignment
Dr. Alexander Martin Selby 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 Alexander Selby reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Hyde Park, NY 11040
- Reassigned Medicare billing, New York enrollment
- 9,353 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lenox Hill Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10075 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10075
NEW YORK, NY 10075
NEW YORK, NY 10075
NEW YORK, NY 10075
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 Selby's NPI number?
The NPI number for Alexander Selby is 1306400627. It was assigned to this individual provider in the NPPES registry on April 23, 2019.
Where is Alexander Selby located?
Alexander Selby practices at 100 E 77th St, New York, NY 10075. The listed phone number is (212) 434-2000.
What is Alexander Selby's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Alexander Selby enrolled in Medicare?
Yes. Alexander Selby 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 Alexander Selby's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Selby reassigns Medicare benefits to North Shore - Lij Medical PC (New Hyde Park, 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 Alexander Selby's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Alexander Selby affiliated with any hospitals?
According to CMS data, Alexander Selby is affiliated with Lenox Hill Hospital.
When was this NPI record last updated?
The NPPES record for Alexander Selby was last updated on May 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Alexander Martin Selby, MD · NPI 1306400627
Emergency Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since April 23, 2019.
## Identity
- **NPI:** 1306400627 (Entity type: Individual)
- **Enumerated:** April 23, 2019
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 316808 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 E 77TH ST, New York, NY 10075-1850
- **Phone:** (212) 434-2000
## 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:** North Shore - Lij Medical PC (NPI 1790043479, New Hyde Park, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York Medical College, class of 2019
## Record status
- **NPPES last updated:** May 25, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1306400627) · Data from the CMS NPPES public registry.