ALEXA RIVERA MD
NPI 1154957058
Student in an Organized Health Care Education/Training Program in New York, NY
About Alexa Rivera Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXA RIVERA MD (NPI 1154957058) is an individual student in an organized health care education/training program in New York, New York and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Florida State University College Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
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
Alexa Rivera 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
2Medicare enrollment records show Alexa Rivera reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10003
- Reassigned Medicare billing, New York enrollment
- 13 clinicians in this Medicare group
Stamford, CT 06907
- Reassigned Medicare billing, Connecticut enrollment
- 496 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.
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 10003
NEW YORK, NY 10003
NEW YORK, NY 10003
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 Alexa Rivera's NPI number?
The NPI number for Alexa Rivera is 1154957058. It was assigned to this individual provider in the NPPES registry on March 23, 2020.
Where is Alexa Rivera located?
Alexa Rivera practices at 317 E 17th St, New York, NY 10003. The listed phone number is (212) 420-2390.
What is Alexa Rivera's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Alexa Rivera enrolled in Medicare?
Yes. Alexa Rivera 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 Alexa Rivera's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexa Rivera reassigns Medicare benefits to 2 organizations: Realization Center, Inc. (New York, NY) and Stamford Health Medical Group Inc (Stamford, CT). 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 Alexa Rivera's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Alexa Rivera was last updated on March 23, 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.
# Alexa Rivera, MD · NPI 1154957058
Student in an Organized Health Care Education/Training Program provider in New York, New York. Individual provider, active in the CMS NPPES registry since March 23, 2020.
## Identity
- **NPI:** 1154957058 (Entity type: Individual)
- **Enumerated:** March 23, 2020
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 317 E 17TH ST, New York, NY 10003-3804
- **Phone:** (212) 420-2390
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Realization Center, Inc. (NPI 1699827345, New York, NY); Stamford Health Medical Group Inc (NPI 1154633980, Stamford, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Florida State University College Of Medicine, class of 2020
## Record status
- **NPPES last updated:** March 23, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1154957058) · Data from the CMS NPPES public registry.