LAYLA CRISTAL BARRERA DO
NPI 1447788575
Internal Medicine in Stony Brook, NY
About Layla Cristal Barrera Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAYLA CRISTAL BARRERA DO (NPI 1447788575) is an individual internal medicine provider in Stony Brook, New York, licensed in New York (305259) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS, is affiliated with Suny/stony Brook University Hospital, and is a graduate of Touro Un Col Of Osteopathic Medicine, Henderson (2017).
NPPES Registry Identity
Specialties & Licenses 2
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
Layla Cristal Barrera Do 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 Layla Barrera reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Smithtown, NY 11787
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Southwest Suffolk Medical PC
- 348 clinicians in this Medicare group
Stony Brook, NY 11794
- Reassigned Medicare billing, New York enrollment
- 261 clinicians in this Medicare group
West Sayville, NY 11796
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Chs Physician Partners PC
- 944 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 4
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.
Suny/Stony Brook University Hospital
Acute Care Hospitals · Stony Brook, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11794 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STONY BROOK, NY 11794
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 Layla Barrera's NPI number?
The NPI number for Layla Barrera is 1447788575. It was assigned to this individual provider in the NPPES registry on June 2, 2017.
Where is Layla Barrera located?
Layla Barrera practices at 100 Nicholls Road, Stony Brook, NY 11794. The listed phone number is (631) 689-8333.
What is Layla Barrera's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Layla Barrera enrolled in Medicare?
Yes. Layla Barrera 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 Layla Barrera's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Layla Barrera reassigns Medicare benefits to 3 organizations: Southwest Suffolk, P.C (Smithtown, NY), Stony Brook Internists, University Faculty Practice Corporation (Stony Brook, NY) and Chs Physician Partners, P.C (West Sayville, NY). 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 Layla Barrera's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Layla Barrera affiliated with any hospitals?
According to CMS data, Layla Barrera is affiliated with Suny/Stony Brook University Hospital.
When was this NPI record last updated?
The NPPES record for Layla Barrera was last updated on April 8, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Layla Cristal Barrera, DO · NPI 1447788575
Internal Medicine physician in Stony Brook, New York. Individual provider, active in the CMS NPPES registry since June 2, 2017.
## Identity
- **NPI:** 1447788575 (Entity type: Individual)
- **Enumerated:** June 2, 2017
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 305259 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 NICHOLLS ROAD, Stony Brook, NY 11794-8363
- **Phone:** (631) 689-8333
## 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): Southwest Suffolk, P.C (NPI 1730428467, Smithtown, NY); Stony Brook Internists, University Faculty Practice Corporation (NPI 1215976337, Stony Brook, NY); Chs Physician Partners, P.C (NPI 1679823512, West Sayville, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Touro Un Col Of Osteopathic Medicine, Henderson, class of 2017
## Record status
- **NPPES last updated:** April 8, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1447788575) · Data from the CMS NPPES public registry.