INTERNAL MEDICINE PRACTICE, P.C.
NPI 1013121508
Clinic/Center - Primary Care in Vienna, VA
About Internal Medicine Practice, P.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
INTERNAL MEDICINE PRACTICE, P.C. (NPI 1013121508) is a healthcare organization registered as a primary care in Vienna, Virginia and active in the NPI registry since May 2007. The organization holds a CLIA Waiver certificate valid through August 31, 2028 and lists Sandra Tirado, Physician, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Internal Medicine Practice, P.c. 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 Internal Medicine Practice, P.C., 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 49D0863267
Internal Medicine Practice PC · Vienna, VAFrequently 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 Internal Medicine Practice, P.C.'s NPI number?
The NPI number for Internal Medicine Practice, P.C. is 1013121508. It was assigned to this organization in the NPPES registry on May 10, 2007.
Where is Internal Medicine Practice, P.C. located?
Internal Medicine Practice, P.C. is located at 8233 Old Courthouse Rd Suite 170, Vienna, VA 22182. The listed phone number is (703) 556-9318.
What is Internal Medicine Practice, P.C.'s specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.
Is Internal Medicine Practice, P.C. enrolled in Medicare?
Yes. Internal Medicine Practice, P.C. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Internal Medicine Practice, P.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Internal Medicine Practice, 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Internal Medicine Practice, P.C. hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 49D0863267) is associated with this NPI, valid through August 31, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Internal Medicine Practice, P.C. was last updated on July 14, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Internal Medicine Practice, P.c. · NPI 1013121508
Primary Care organization in Vienna, Virginia. Organization record, active in the CMS NPPES registry since May 10, 2007.
## Identity
- **NPI:** 1013121508 (Entity type: Organization)
- **Enumerated:** May 10, 2007
- **Primary specialty:** Clinic/Center - Primary Care · taxonomy 261QP2300X
- **Organization subpart:** No
- **Authorized official:** Sandra Tirado, PHYSICIAN
## Practice location
- **Address:** 8233 OLD COURTHOUSE RD, SUITE 170, Vienna, VA 22182-3816
- **Phone:** (703) 556-9318 · **Fax:** (703) 448-8839
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Internal Medicine) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 14, 2011
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1013121508) · Data from the CMS NPPES public registry.