MARY BETH ALDER RN , BSN, NP, DNSC
NPI 1548450463
Nurse Practitioner in Washington, DC
About Mary Beth Alder Rn , Bsn, Np, Dnsc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY BETH ALDER RN , BSN, NP, DNSC (NPI 1548450463) is an individual nurse practitioner in Washington, District Of Columbia, licensed in District Of Columbia (RN1015562) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses 2
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
Mary Beth Alder Rn , Bsn, Np, Dnsc 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 Mary Alder reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Washington, DC 20017
- Reassigned Medicare billing, District of Columbia enrollment
- 18 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20017 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
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 Mary Alder's NPI number?
The NPI number for Mary Alder is 1548450463. It was assigned to this individual provider in the NPPES registry on July 26, 2007.
Where is Mary Alder located?
Mary Alder practices at 1140 Varnum St NE Ste 203, Washington, DC 20017. The listed phone number is (202) 525-5175.
What is Mary Alder's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Mary Alder enrolled in Medicare?
Yes. Mary Alder 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 Mary Alder's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Alder reassigns Medicare benefits to Washington Health Institute (Washington, DC). 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 Mary Alder'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 Mary Alder was last updated on March 25, 2022. 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.
# Mary Beth Alder, RN , BSN, NP, DNSC · NPI 1548450463
Nurse Practitioner physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since July 26, 2007.
## Identity
- **NPI:** 1548450463 (Entity type: Individual)
- **Enumerated:** July 26, 2007
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** RN1015562 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 1140 VARNUM ST NE STE 203, Washington, DC 20017-2153
- **Phone:** (202) 525-5175 · **Fax:** (202) 450-6088
## 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:** Washington Health Institute (NPI 1699242321, Washington, DC), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** March 25, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1548450463) · Data from the CMS NPPES public registry.