DR. NICHOLAS JAMES HORNSTEIN MD, PHD
NPI 1548764848
Internal Medicine in Houston, TX
About Dr. Nicholas James Hornstein Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICHOLAS JAMES HORNSTEIN MD, PHD (NPI 1548764848) is an individual internal medicine provider in Houston, Texas, licensed in Texas (T5126) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with North Shore University Hospital, and is a graduate of Columbia University College Of Physicians And Surgeons (2018).
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. Nicholas James Hornstein Md, Phd 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 Nicholas Hornstein reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Hyde Park, NY 11042
- Reassigned Medicare billing, New York enrollment
- 198 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 3
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.
North Shore University Hospital
Acute Care Hospitals · Manhasset, NYLenox Hill Hospital
Acute Care Hospitals · New York, NYLong Island Jewish Medical Center
Acute Care Hospitals · New Hyde Park, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77030 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.
HOUSTON, TX 77030
HOUSTON, TX 77030
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 Nicholas Hornstein's NPI number?
The NPI number for Nicholas Hornstein is 1548764848. It was assigned to this individual provider in the NPPES registry on March 21, 2018.
Where is Nicholas Hornstein located?
Nicholas Hornstein practices at 1515 Holcombe Blvd, Houston, TX 77030. The listed phone number is (713) 792-6161.
What is Nicholas Hornstein's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Nicholas Hornstein enrolled in Medicare?
Yes. Nicholas Hornstein 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 Nicholas Hornstein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Hornstein reassigns Medicare benefits to North Shore Health System Medical Faculty Group Practice Inc (New Hyde Park, 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 Nicholas Hornstein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Nicholas Hornstein affiliated with any hospitals?
According to CMS data, Nicholas Hornstein is affiliated with North Shore University Hospital, Lenox Hill Hospital and Long Island Jewish Medical Center.
When was this NPI record last updated?
The NPPES record for Nicholas Hornstein was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Nicholas James Hornstein, MD, PHD · NPI 1548764848
Internal Medicine physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since March 21, 2018.
## Identity
- **NPI:** 1548764848 (Entity type: Individual)
- **Enumerated:** March 21, 2018
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** T5126 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 1515 HOLCOMBE BLVD, Houston, TX 77030-4000
- **Phone:** (713) 792-6161
## 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:** North Shore Health System Medical Faculty Group Practice Inc (NPI 1003409061, New Hyde Park, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Columbia University College Of Physicians And Surgeons, class of 2018
## Record status
- **NPPES last updated:** March 7, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1548764848) · Data from the CMS NPPES public registry.