IS ENDOCRINOLOGY LLC
NPI 1508523762
Internal Medicine - Endocrinology, Diabetes & Metabolism in Caguas, PR
About Is Endocrinology Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IS ENDOCRINOLOGY LLC (NPI 1508523762) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Caguas, Puerto Rico and active in the NPI registry since November 2021. The organization maintains a secondary practice location in Caguas and lists Ivan A Alexander Serrano Santiago, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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)
Is Endocrinology Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Is Endocrinology LLC, which bills Medicare for the services this clinician delivers.
Clinician (1)
Caguas, PR 00725
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 Is Endocrinology LLC's NPI number?
The NPI number for Is Endocrinology LLC is 1508523762. It was assigned to this organization in the NPPES registry on November 23, 2021.
Where is Is Endocrinology LLC located?
Is Endocrinology LLC is located at Urb Professional Center Building 2 Carr Munoz Rivera Esquina Goyco Ofi 310, Caguas, PR 00725. The listed phone number is (787) 399-9121.
What is Is Endocrinology LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is Is Endocrinology LLC enrolled in Medicare?
Yes. Is Endocrinology LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Is Endocrinology LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Endocrinology) reassigns their Medicare billing to Is Endocrinology LLC. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Is Endocrinology LLC was last updated on August 26, 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.
# Is Endocrinology Llc · NPI 1508523762
Endocrinology, Diabetes & Metabolism organization in Caguas, Puerto Rico. Organization record, active in the CMS NPPES registry since November 23, 2021.
## Identity
- **NPI:** 1508523762 (Entity type: Organization)
- **Enumerated:** November 23, 2021
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **Organization subpart:** No
- **Authorized official:** Ivan A Serrano Santiago, OWNER
## Practice location
- **Address:** URB PROFESSIONAL CENTER BUILDING, 2 CARR MUNOZ RIVERA ESQUINA GOYCO OFI 310, Caguas, PR 00725
- **Phone:** (787) 399-9121
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Endocrinology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 26, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1508523762) · Data from the CMS NPPES public registry.