CLARISSA CASTANON M.D.
NPI 1497170070
Hospitalist in Bay Shore, NY
About Clarissa Castanon M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CLARISSA CASTANON M.D. (NPI 1497170070) is an individual hospitalist provider in Bay Shore, New York, licensed in New York (305234) and active in the NPI registry since February 2014. She is enrolled in Medicare PECOS, is affiliated with Ns/lij Hs Southside Hospital, and maintains a secondary practice location in Brooklyn.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Clarissa Castanon M.d. 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 Clarissa Castanon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Hyde Park, NY 11040
- Reassigned Medicare billing, New York enrollment
- 9,353 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 5
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.
Ns/Lij Hs Southside Hospital
Acute Care Hospitals · Bay Shore, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11706 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
BAY SHORE, NY 11706
BAY SHORE, NY 11706
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 Clarissa Castanon's NPI number?
The NPI number for Clarissa Castanon is 1497170070. It was assigned to this individual provider in the NPPES registry on February 19, 2014.
Where is Clarissa Castanon located?
Clarissa Castanon practices at 301 E Main St, Bay Shore, NY 11706. The listed phone number is (631) 968-3000.
What is Clarissa Castanon's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Clarissa Castanon enrolled in Medicare?
Yes. Clarissa Castanon 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 Clarissa Castanon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Clarissa Castanon reassigns Medicare benefits to North Shore - Lij Medical PC (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 Clarissa Castanon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Clarissa Castanon affiliated with any hospitals?
According to CMS data, Clarissa Castanon is affiliated with Ns/Lij Hs Southside Hospital.
When was this NPI record last updated?
The NPPES record for Clarissa Castanon was last updated on August 17, 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.
# Clarissa Castanon, M.D. · NPI 1497170070
Hospitalist physician in Bay Shore, New York. Individual provider, active in the CMS NPPES registry since February 19, 2014.
## Identity
- **NPI:** 1497170070 (Entity type: Individual)
- **Enumerated:** February 19, 2014
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 305234 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 301 E MAIN ST, Bay Shore, NY 11706-8458
- **Phone:** (631) 968-3000 · **Fax:** (631) 968-3716
## 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 - Lij Medical PC (NPI 1790043479, New Hyde Park, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** August 17, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1497170070) · Data from the CMS NPPES public registry.