DR. MITCHELL CHAIKIN NELSON M.D.
NPI 1861786824
Hospitalist in New York, NY
About Dr. Mitchell Chaikin Nelson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MITCHELL CHAIKIN NELSON M.D. (NPI 1861786824) is an individual hospitalist provider in New York, New York, licensed in New York (279550) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with New York-presbyterian Hospital, and is a graduate of Other (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 and accepts Medicare assignment
Dr. Mitchell Chaikin Nelson M.d. 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 Mitchell Nelson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 121 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 8
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.
New York-Presbyterian Hospital
Acute Care Hospitals · New York, NYHospital For Special Surgery
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10021 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 10021
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 Mitchell Nelson's NPI number?
The NPI number for Mitchell Nelson is 1861786824. It was assigned to this individual provider in the NPPES registry on June 7, 2011.
Where is Mitchell Nelson located?
Mitchell Nelson practices at 535 E 70th St, New York, NY 10021. The listed phone number is (212) 606-1679.
What is Mitchell Nelson's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Mitchell Nelson enrolled in Medicare?
Yes. Mitchell Nelson 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 Mitchell Nelson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mitchell Nelson reassigns Medicare benefits to New York Society For The Relief Of Ruptured & Crippled Maintaining (New York, 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 Mitchell Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Mitchell Nelson affiliated with any hospitals?
According to CMS data, Mitchell Nelson is affiliated with New York-Presbyterian Hospital and Hospital For Special Surgery.
When was this NPI record last updated?
The NPPES record for Mitchell Nelson was last updated on April 23, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Mitchell Chaikin Nelson, M.D. · NPI 1861786824
Hospitalist physician in New York, New York. Individual provider, active in the CMS NPPES registry since June 7, 2011.
## Identity
- **NPI:** 1861786824 (Entity type: Individual)
- **Enumerated:** June 7, 2011
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 279550 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 535 E 70TH ST, New York, NY 10021-4823
- **Phone:** (212) 606-1679
## 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:** New York Society For The Relief Of Ruptured & Crippled Maintaining (NPI 1427496652, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** April 23, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1861786824) · Data from the CMS NPPES public registry.