DR. SARAH IOSIFESCU M.D.
NPI 1649702796
Emergency Medicine - Emergency Medical Services in New York, NY
About Dr. Sarah Iosifescu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SARAH IOSIFESCU M.D. (NPI 1649702796) is an individual emergency medical services provider in New York, New York, licensed in New Jersey (25MA10814200) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS, is affiliated with Hunterdon Medical Center, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 2
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
Dr. Sarah Iosifescu 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 Reassignments
4Medicare enrollment records show Sarah Iosifescu reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Livingston, NJ 07039
- Reassigned Medicare billing, New Jersey enrollment
- 1,913 clinicians in this Medicare group
Somerset, NJ 08873
- Reassigned Medicare billing, New Jersey enrollment
- 1,557 clinicians in this Medicare group
Flemington, NJ 08822
- Reassigned Medicare billing, New Jersey enrollment
- 48 clinicians in this Medicare group
Flemington, NJ 08822
- Reassigned Medicare billing, New Jersey enrollment
- 27 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 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hunterdon Medical Center
Acute Care Hospitals · Flemington, NJRobert Wood Johnson University Hospital - Somerset
Acute Care Hospitals · Somerville, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10019 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 10019
NEW YORK, NY 10019
NEW YORK, NY 10019
NEW YORK, NY 10019
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 Sarah Iosifescu's NPI number?
The NPI number for Sarah Iosifescu is 1649702796. It was assigned to this individual provider in the NPPES registry on March 29, 2017.
Where is Sarah Iosifescu located?
Sarah Iosifescu practices at 1000 10th Ave, New York, NY 10019. The listed phone number is (212) 523-4000.
What is Sarah Iosifescu's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.
Is Sarah Iosifescu enrolled in Medicare?
Yes. Sarah Iosifescu 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 Sarah Iosifescu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Iosifescu reassigns Medicare benefits to 4 organizations: Rwjbh Observation Associates LLC (Livingston, NJ), Rwjbh Emergency Medicine Associates, LLC (Somerset, NJ), Hunterdon Urgent Care PC (Flemington, NJ) and Pegasus Emergency Group PA (Flemington, NJ). 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 Sarah Iosifescu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sarah Iosifescu accept?
Health plans from Oscar Health list Sarah Iosifescu 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.
Is Sarah Iosifescu affiliated with any hospitals?
According to CMS data, Sarah Iosifescu is affiliated with Hunterdon Medical Center and Robert Wood Johnson University Hospital - Somerset.
When was this NPI record last updated?
The NPPES record for Sarah Iosifescu was last updated on July 9, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. Sarah Iosifescu, M.D. · NPI 1649702796
Emergency Medical Services physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 29, 2017.
## Identity
- **NPI:** 1649702796 (Entity type: Individual)
- **Enumerated:** March 29, 2017
- **Primary specialty:** Emergency Medicine - Emergency Medical Services · taxonomy 207PE0004X
- **State license:** 25MA10814200 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 10TH AVE, New York, NY 10019-1147
- **Phone:** (212) 523-4000
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Rwjbh Observation Associates LLC (NPI 1760095806, Livingston, NJ); Rwjbh Emergency Medicine Associates, LLC (NPI 1912510041, Somerset, NJ); Hunterdon Urgent Care PC (NPI 1154791796, Flemington, NJ); Pegasus Emergency Group PA (NPI 1336179621, Flemington, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** July 9, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1649702796) · Data from the CMS NPPES public registry.