DONALD BERTRAM CHALFIN MD
NPI 1366479545
Internal Medicine - Critical Care Medicine in Bronx, NY
About Donald Bertram Chalfin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DONALD BERTRAM CHALFIN MD (NPI 1366479545) is an individual critical care medicine provider in Bronx, New York, licensed in New York (172001-1) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Icahn School Of Medicine At Mount Sinai (1985).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
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
Donald Bertram Chalfin 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 Reassignments
3Medicare enrollment records show Donald Chalfin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newburgh, NY 12550
- Reassigned Medicare billing, New York enrollment
- 110 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 clinicians in this Medicare group
Redding, CA 96001
- Reassigned Medicare billing, California and Texas enrollments
- 46 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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10461 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Donald Chalfin's NPI number?
The NPI number for Donald Chalfin is 1366479545. It was assigned to this individual provider in the NPPES registry on June 26, 2006.
Where is Donald Chalfin located?
Donald Chalfin practices at 1825 Eastchester Road/4th Floor Montefiore Medicine Center/Division Of Critical Care, Bronx, NY 10461. The listed phone number is (718) 904-3141.
What is Donald Chalfin's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Donald Chalfin enrolled in Medicare?
Yes. Donald Chalfin 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 organizations bill Medicare for Donald Chalfin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Donald Chalfin reassigns Medicare benefits to 3 organizations: Critical Care Physician Of New York PC (Newburgh, NY), Hospitalist Medicine Physicians Of California, Inc (Apple Valley, CA) and Ccmma Ca PC (Redding, CA). 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 Donald Chalfin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Donald Chalfin accept?
Health plans from Blue Cross and Blue Shield of Texas and Molina Healthcare list Donald Chalfin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Donald Chalfin was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Donald Bertram Chalfin, MD · NPI 1366479545
Critical Care Medicine physician in Bronx, New York. Individual provider, active in the CMS NPPES registry since June 26, 2006.
## Identity
- **NPI:** 1366479545 (Entity type: Individual)
- **Enumerated:** June 26, 2006
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 172001-1 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1825 EASTCHESTER ROAD/4TH FLOOR, MONTEFIORE MEDICINE CENTER/DIVISION OF CRITICAL CARE, Bronx, NY 10461
- **Phone:** (718) 904-3141
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Critical Care Physician Of New York PC (NPI 1316293954, Newburgh, NY); Hospitalist Medicine Physicians Of California, Inc (NPI 1184663965, Apple Valley, CA); Ccmma Ca PC (NPI 1679293443, Redding, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 1985
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare UPIN E84098 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1366479545) · Data from the CMS NPPES public registry.