ERNEST CASTRO MD PLLC
NPI 1801551296
Clinic/Center - Primary Care in Arvada, CO
About Ernest Castro Md Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ERNEST CASTRO MD PLLC (NPI 1801551296) is a healthcare organization registered as a primary care in Arvada, Colorado and active in the NPI registry since November 2021. The organization holds a CLIA Waiver certificate valid through December 14, 2027 and lists Ernest Ross Castro, Physician/owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ernest Castro Md Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by March 31, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Ernest Castro MD PLLC, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 06D2245633
Ernest Castro MD PLLC · Arvada, COFrequently 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 Ernest Castro MD PLLC's NPI number?
The NPI number for Ernest Castro MD PLLC is 1801551296. It was assigned to this organization in the NPPES registry on November 1, 2021.
Where is Ernest Castro MD PLLC located?
Ernest Castro MD PLLC is located at 6870 W 52nd Ave Ste 212, Arvada, CO 80002. The listed phone number is (720) 868-3111.
What is Ernest Castro MD PLLC's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.
Is Ernest Castro MD PLLC enrolled in Medicare?
Yes. Ernest Castro MD PLLC is registered in the Medicare PECOS enrollment system.
When is Ernest Castro MD PLLC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Colorado, Clinic/Group Practice) is due for revalidation by March 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Ernest Castro MD PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Ernest Castro MD 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Ernest Castro MD PLLC hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 06D2245633) is associated with this NPI, valid through December 14, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Ernest Castro MD PLLC was last updated on December 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Ernest Castro Md Pllc · NPI 1801551296
Primary Care organization in Arvada, Colorado. Organization record, active in the CMS NPPES registry since November 1, 2021.
## Identity
- **NPI:** 1801551296 (Entity type: Organization)
- **Enumerated:** November 1, 2021
- **Primary specialty:** Clinic/Center - Primary Care · taxonomy 261QP2300X
- **Organization subpart:** No
- **Authorized official:** Ernest Castro, PHYSICIAN/OWNER
## Practice location
- **Address:** 6870 W 52ND AVE STE 212, Arvada, CO 80002-3953
- **Phone:** (720) 868-3111 · **Fax:** (303) 220-4941
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** March 31, 2027 (Non-DME Part B, Colorado, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1 clinician (Family Practice) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 13, 2021
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1801551296) · Data from the CMS NPPES public registry.