MR. MACDALE JOHN ELWIN M.D
NPI 1104117969
Anesthesiology in New York, NY
About Mr. Macdale John Elwin M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. MACDALE JOHN ELWIN M.D (NPI 1104117969) is an individual anesthesiology provider in New York, New York, licensed in New York (273102) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with St John's Riverside Hospital, and is a graduate of Yale University School Of Medicine (2011).
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)
Mr. Macdale John Elwin M.d is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
6Medicare enrollment records show Macdale Elwin reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bronx, NY 10457
- Reassigned Medicare billing, New York enrollment
- 72 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 245 clinicians in this Medicare group
New York, NY 10025
- Reassigned Medicare billing, New York enrollment
- 5,251 clinicians in this Medicare group
New York, NY 10075
- Reassigned Medicare billing, New York enrollment
- 530 clinicians in this Medicare group
New York, NY 10016
- Reassigned Medicare billing, New York enrollment
- 1,074 clinicians in this Medicare group
Chappaqua, NY 10514
- Reassigned Medicare billing, New York enrollment
- 1,406 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St John's Riverside Hospital
Acute Care Hospitals · Yonkers, NYNyu Langone Hospitals
Acute Care Hospitals · New York, NYSt Barnabas Hospital
Acute Care Hospitals · Bronx, NYOther 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 Macdale Elwin's NPI number?
The NPI number for Macdale Elwin is 1104117969. It was assigned to this individual provider in the NPPES registry on April 28, 2011.
Where is Macdale Elwin located?
Macdale Elwin practices at 622 W 168th St, New York, NY 10032. The listed phone number is (212) 305-6494.
What is Macdale Elwin's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Macdale Elwin enrolled in Medicare?
Yes. Macdale Elwin is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Macdale Elwin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Macdale Elwin reassigns Medicare benefits to 6 organizations: Bronx Anesthesia Services, PC (Bronx, NY), Icahn School Of Medicine At Mount Sinai (New York, NY), Montefiore Medical Center (New York, NY), Physicians Of University Hospital, PC (New York, NY), New York University (New York, NY) and 1 more organization, listed in the Medicare section above. 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 Macdale Elwin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Macdale Elwin affiliated with any hospitals?
According to CMS data, Macdale Elwin is affiliated with St John's Riverside Hospital, Nyu Langone Hospitals and St Barnabas Hospital.
When was this NPI record last updated?
The NPPES record for Macdale Elwin was last updated on January 1, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.