DANIELLE MCWILLIAMS
NPI 1841799558
Registered Nurse - Critical Care Medicine in Boston, MA
About Danielle Mcwilliams NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DANIELLE MCWILLIAMS (NPI 1841799558) is an individual critical care medicine provider in Boston, Massachusetts, licensed in Massachusetts (RN2258044) and active in the NPI registry since February 2018. She is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Danielle Mcwilliams 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 Danielle Mcwilliams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Brigham And Women's Hospital
Acute Care Hospitals · Boston, MAFrequently 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 Danielle Mcwilliams's NPI number?
The NPI number for Danielle Mcwilliams is 1841799558. It was assigned to this individual provider in the NPPES registry on February 8, 2018.
Where is Danielle Mcwilliams located?
Danielle Mcwilliams practices at 351 Dorchester St Unit 4, Boston, MA 02127. The listed phone number is (508) 274-6091.
What is Danielle Mcwilliams's specialty?
The primary specialty registered for this NPI is Registered Nurse, specializing in Critical Care Medicine, with taxonomy code 163WC0200X.
Is Danielle Mcwilliams enrolled in Medicare?
Yes. Danielle Mcwilliams 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 Danielle Mcwilliams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Danielle Mcwilliams reassigns Medicare benefits to Brigham & Womens Physicians Organization Inc (Boston, MA). 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 Danielle Mcwilliams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Danielle Mcwilliams accept?
Health plans from Taro Health list Danielle Mcwilliams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Danielle Mcwilliams affiliated with any hospitals?
According to CMS data, Danielle Mcwilliams is affiliated with Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Danielle Mcwilliams was last updated on February 8, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Danielle Mcwilliams · NPI 1841799558
Critical Care Medicine provider in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since February 8, 2018.
## Identity
- **NPI:** 1841799558 (Entity type: Individual)
- **Enumerated:** February 8, 2018
- **Primary specialty:** Registered Nurse - Critical Care Medicine · taxonomy 163WC0200X
- **State license:** RN2258044 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 351 DORCHESTER ST UNIT 4, Boston, MA 02127-3299
- **Phone:** (508) 274-6091
## 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:** Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** February 8, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1841799558) · Data from the CMS NPPES public registry.