CAROL R HOROWITZ MD
NPI 1144251604
Internal Medicine in New York, NY
About Carol R Horowitz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAROL R HOROWITZ MD (NPI 1144251604) is an individual internal medicine provider in New York, New York, licensed in New York (185517) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and is a graduate of Js Weill Medical College, Cornell University (1989).
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
Carol R Horowitz 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 Carol Horowitz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 769 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Sinai Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10029 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.
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 Carol Horowitz's NPI number?
The NPI number for Carol Horowitz is 1144251604. It was assigned to this individual provider in the NPPES registry on July 5, 2006.
Where is Carol Horowitz located?
Carol Horowitz practices at 17 E 102nd St, New York, NY 10029. The listed phone number is (212) 659-8551.
What is Carol Horowitz's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Carol Horowitz enrolled in Medicare?
Yes. Carol Horowitz 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 Carol Horowitz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carol Horowitz reassigns Medicare benefits to Icahn School Of Medicine At Mount Sinai (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 Carol Horowitz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Carol Horowitz affiliated with any hospitals?
According to CMS data, Carol Horowitz is affiliated with Mount Sinai Hospital.
When was this NPI record last updated?
The NPPES record for Carol Horowitz was last updated on February 28, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Carol R Horowitz, MD · NPI 1144251604
Internal Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since July 5, 2006.
## Identity
- **NPI:** 1144251604 (Entity type: Individual)
- **Enumerated:** July 5, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 185517 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 17 E 102ND ST, New York, NY 10029-5204
- **Phone:** (212) 659-8551 · **Fax:** (212) 831-8116
## 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:** Icahn School Of Medicine At Mount Sinai (NPI 1427493113, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Js Weill Medical College, Cornell University, class of 1989
## Record status
- **NPPES last updated:** February 28, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1144251604) · Data from the CMS NPPES public registry.