DR. SEAN ROGERS LLEWELLYN MD, PHD
NPI 1215499975
Family Medicine in Bronx, NY
About Dr. Sean Rogers Llewellyn Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SEAN ROGERS LLEWELLYN MD, PHD (NPI 1215499975) is an individual family medicine provider in Bronx, New York, licensed in New York (332392) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, maintains 6 additional practice locations, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 6
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Sean Rogers Llewellyn Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Sean Llewellyn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60617
- Reassigned Medicare billing, Illinois enrollment
- 343 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10469 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 8
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 Sean Llewellyn's NPI number?
The NPI number for Sean Llewellyn is 1215499975. It was assigned to this individual provider in the NPPES registry on April 2, 2019.
Where is Sean Llewellyn located?
Sean Llewellyn practices at 2721 Bronxwood Ave, Bronx, NY 10469. The listed phone number is (718) 765-6350.
What is Sean Llewellyn's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Sean Llewellyn enrolled in Medicare?
Yes. Sean Llewellyn is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Sean Llewellyn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sean Llewellyn reassigns Medicare benefits to Oak Street Health Physicians Group, PC (Chicago, IL). 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 Sean Llewellyn'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 Sean Llewellyn was last updated on October 7, 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.