MS. MARIEL CATHERINE MARFONGELLI PMHNP-BC
NPI 1639615685
Psychiatric Hospital in Boston, MA
About Ms. Mariel Catherine Marfongelli Pmhnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARIEL CATHERINE MARFONGELLI PMHNP-BC (NPI 1639615685) is an individual psychiatric hospital provider in Boston, Massachusetts, licensed in Massachusetts (RN2299436) and active in the NPI registry since January 2017. She is enrolled in Medicare PECOS and is a graduate of Other (2016).
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
Ms. Mariel Catherine Marfongelli Pmhnp-bc 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 Mariel Marfongelli reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Salem, MA 01970
- Reassigned Medicare billing, Massachusetts enrollment
- 994 clinicians in this Medicare group
Salem, MA 01970
- Reassigned Medicare billing, Massachusetts enrollment
- 94 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
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.
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 Mariel Marfongelli's NPI number?
The NPI number for Mariel Marfongelli is 1639615685. It was assigned to this individual provider in the NPPES registry on January 15, 2017.
Where is Mariel Marfongelli located?
Mariel Marfongelli practices at 537 E 6th St Apt 1, Boston, MA 02127. The listed phone number is (617) 435-9004.
What is Mariel Marfongelli's specialty?
The primary specialty registered for this NPI is Psychiatric Hospital with taxonomy code 283Q00000X.
Is Mariel Marfongelli enrolled in Medicare?
Yes. Mariel Marfongelli 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 Mariel Marfongelli's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariel Marfongelli reassigns Medicare benefits to 2 organizations: Mass General Brigham Medical Group Northern Massachusetts Inc (Salem, MA) and North Shore Medical Center, Inc. (Salem, MA). 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 Mariel Marfongelli's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mariel Marfongelli accept?
Health plans from Harvard Pilgrim Health Care and WellSense Health Plan list Mariel Marfongelli 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.
When was this NPI record last updated?
The NPPES record for Mariel Marfongelli was last updated on January 15, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Ms. Mariel Catherine Marfongelli, PMHNP-BC · NPI 1639615685
Psychiatric Hospital provider in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since January 15, 2017.
## Identity
- **NPI:** 1639615685 (Entity type: Individual)
- **Enumerated:** January 15, 2017
- **Primary specialty:** Psychiatric Hospital · taxonomy 283Q00000X
- **State license:** RN2299436 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 537 E 6TH ST APT 1, Boston, MA 02127-3070
- **Phone:** (617) 435-9004
## 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): Mass General Brigham Medical Group Northern Massachusetts Inc (NPI 1588606123, Salem, MA); North Shore Medical Center, Inc. (NPI 1730121633, Salem, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** January 15, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1639615685) · Data from the CMS NPPES public registry.