THE WASHINGTON ENDOCRINE CLINIC, PLLC
NPI 1659503449
Clinic/Center - Medical Specialty in Washington, DC
About The Washington Endocrine Clinic, Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THE WASHINGTON ENDOCRINE CLINIC, PLLC (NPI 1659503449) is a healthcare organization registered as a medical specialty in Washington, District Of Columbia and active in the NPI registry since August 2009. The organization lists Michael J West, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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)
The Washington Endocrine Clinic, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to The Washington Endocrine Clinic, PLLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.
Clinicians, nearest first (2)
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 The Washington Endocrine Clinic, PLLC's NPI number?
The NPI number for The Washington Endocrine Clinic, PLLC is 1659503449. It was assigned to this organization in the NPPES registry on August 13, 2009.
Where is The Washington Endocrine Clinic, PLLC located?
The Washington Endocrine Clinic, PLLC is located at 1900 L St NW Ste 609, Washington, DC 20036. The listed phone number is (202) 570-5151.
What is The Washington Endocrine Clinic, PLLC's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Medical Specialty, with taxonomy code 261QM2500X.
Is The Washington Endocrine Clinic, PLLC enrolled in Medicare?
Yes. The Washington Endocrine Clinic, PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through The Washington Endocrine Clinic, PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Endocrinology, reassign their Medicare billing to The Washington Endocrine Clinic, PLLC. 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. Of these, 1 practice at this address and 2 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 The Washington Endocrine Clinic, PLLC was last updated on April 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.
# The Washington Endocrine Clinic, Pllc · NPI 1659503449
Medical Specialty organization in Washington, District of Columbia. Organization record, active in the CMS NPPES registry since August 13, 2009.
## Identity
- **NPI:** 1659503449 (Entity type: Organization)
- **Enumerated:** August 13, 2009
- **Primary specialty:** Clinic/Center - Medical Specialty · taxonomy 261QM2500X
- **Organization subpart:** No
- **Authorized official:** Michael West, OWNER
## Practice location
- **Address:** 1900 L ST NW STE 609, Washington, DC 20036-5024
- **Phone:** (202) 570-5151 · **Fax:** (202) 446-2946
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 2 clinicians (Endocrinology) reassign Medicare billing to this organization (form CMS-855R); 1 practice at this address and 2 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 24, 2025
- **Other identifiers:** Other MD038324 (DC)
---
Source: [NPI Profile](https://npiprofile.com/npi/1659503449) · Data from the CMS NPPES public registry.