KAREN AQUINO TOLOSA NP
NPI 1477083905
Nurse Practitioner - Acute Care in Silver Spring, MD
About Karen Aquino Tolosa Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN AQUINO TOLOSA NP (NPI 1477083905) is an individual acute care provider in Silver Spring, Maryland, licensed in Maryland (R160120) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Karen Aquino Tolosa Np is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Karen Tolosa reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1376887844 (Maryland)
- 3,530 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 264 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20901 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Karen Tolosa's NPI number?
The NPI number for Karen Tolosa is 1477083905. It was assigned to this individual provider in the NPPES registry on June 18, 2017.
Where is Karen Tolosa located?
Karen Tolosa practices at 10801 Lockwood Dr Ste 210, Silver Spring, MD 20901. The listed phone number is (301) 298-1040.
What is Karen Tolosa's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Karen Tolosa enrolled in Medicare?
Yes. Karen Tolosa is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Karen Tolosa's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Tolosa reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Washington, DC) and Washington Hospital Center Corp (Washington, DC). Each 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 Karen Tolosa's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Karen Tolosa was last updated on October 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Karen Aquino Tolosa, NP · NPI 1477083905
Acute Care physician in Silver Spring, Maryland. Individual provider, active in the CMS NPPES registry since June 18, 2017.
## Identity
- **NPI:** 1477083905 (Entity type: Individual)
- **Enumerated:** June 18, 2017
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** R160120 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 10801 LOCKWOOD DR STE 210, Silver Spring, MD 20901-1563
- **Phone:** (301) 298-1040
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group II LLC (NPI 1023836137, Washington, DC); Washington Hospital Center Corp (NPI 1376627406, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** October 14, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1477083905) · Data from the CMS NPPES public registry.