SIENA PROACTIVE INTERNAL MEDICINE
NPI 1730428467
Family Medicine in Smithtown, NY
About Siena Proactive Internal Medicine NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIENA PROACTIVE INTERNAL MEDICINE (NPI 1730428467) is a healthcare organization registered as a family medicine in Smithtown, New York and active in the NPI registry since January 2013. The organization lists Lori Hummel, Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Siena Proactive Internal Medicine is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
347Medicare enrollment records show 347 clinicians reassign Medicare billing to Siena Proactive Internal Medicine, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 32 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 15
Nearest to this location (20)
See all 347Stony Brook, NY 11794
Stony Brook, NY 11794
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Southwest Suffolk, P.C's NPI number?
The NPI number for Southwest Suffolk, P.C is 1730428467. It was assigned to this organization in the NPPES registry on January 31, 2013. The provider is doing business as Siena Proactive Internal Medicine.
Where is Southwest Suffolk, P.C located?
Southwest Suffolk, P.C is located at 48 Route 25A Suite 210, Smithtown, NY 11787. The listed phone number is (631) 465-6225.
What is Southwest Suffolk, P.C's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Southwest Suffolk, P.C enrolled in Medicare?
Yes. Southwest Suffolk, P.C is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Southwest Suffolk, P.C?
According to the CMS Revalidation Reassignment List (October 2026 release), 347 clinicians in 15 Medicare specialties reassign their Medicare billing to Southwest Suffolk, P.C. A 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 the clinician's services. The largest specialties are Internal Medicine (152), Hospitalist (118) and Family Practice (32). Of these, 5 practice at this address and 32 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Southwest Suffolk, P.C was last updated on January 31, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Siena Proactive Internal Medicine · NPI 1730428467
Family Medicine organization in Smithtown, New York. Organization record, active in the CMS NPPES registry since January 31, 2013.
## Identity
- **NPI:** 1730428467 (Entity type: Organization)
- **Enumerated:** January 31, 2013
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Legal business name:** Southwest Suffolk, P.c
- **Organization subpart:** No
- **Authorized official:** Lori Hummel, DIRECTOR
## Practice location
- **Address:** 48 ROUTE 25A, SUITE 210, Smithtown, NY 11787-1431
- **Phone:** (631) 465-6225
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 347 clinicians in 15 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (152), Hospitalist (118), Family Practice (32); 5 practice at this address and 32 within 10 miles; [full list](https://npiprofile.com/npi/1730428467/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 31, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1730428467) · Data from the CMS NPPES public registry.