MARGARET ANN TUINSTRA NP
NPI 1457045981
Nurse Practitioner - Family in Bethesda, MD
About Margaret Ann Tuinstra Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET ANN TUINSTRA NP (NPI 1457045981) is an individual family provider in Bethesda, Maryland, licensed in Maryland (AC005318) and active in the NPI registry since June 2023. She is enrolled in Medicare PECOS, is affiliated with Suburban Hospital, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
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
Margaret Ann Tuinstra 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 Reassignment
Medicare enrollment records show Margaret Tuinstra reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tysons, VA 22102
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1689485963 (Maryland)
- 691 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Suburban Hospital
Acute Care Hospitals · Bethesda, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20817 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BETHESDA, MD 20817
BETHESDA, MD 20817
BETHESDA, MD 20817
BETHESDA, MD 20817
BETHESDA, MD 20817
BETHESDA, MD 20817
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 Margaret Tuinstra's NPI number?
The NPI number for Margaret Tuinstra is 1457045981. It was assigned to this individual provider in the NPPES registry on June 7, 2023.
Where is Margaret Tuinstra located?
Margaret Tuinstra practices at 6410 Rockledge Dr, Bethesda, MD 20817. The listed phone number is (301) 897-5307.
What is Margaret Tuinstra's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Margaret Tuinstra enrolled in Medicare?
Yes. Margaret Tuinstra 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 organization bills Medicare for Margaret Tuinstra's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Tuinstra reassigns Medicare benefits to Johns Hopkins Community Physicians, Inc (Tysons, VA). The 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 Margaret Tuinstra's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Margaret Tuinstra affiliated with any hospitals?
According to CMS data, Margaret Tuinstra is affiliated with Suburban Hospital.
When was this NPI record last updated?
The NPPES record for Margaret Tuinstra was last updated on June 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Margaret Ann Tuinstra, NP · NPI 1457045981
Family physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since June 7, 2023.
## Identity
- **NPI:** 1457045981 (Entity type: Individual)
- **Enumerated:** June 7, 2023
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** AC005318 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 6410 ROCKLEDGE DR, Bethesda, MD 20817-1809
- **Phone:** (301) 897-5307
## 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:** Johns Hopkins Community Physicians, Inc (NPI 1790631695, Tysons, VA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** June 7, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1457045981) · Data from the CMS NPPES public registry.