MYLINH TRAN HIERONYMUS MSW, LICSW
NPI 1699434878
Social Worker - Clinical in Newton, MA
About Mylinh Tran Hieronymus Msw, Licsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MYLINH TRAN HIERONYMUS MSW, LICSW (NPI 1699434878) is an individual clinical provider in Newton, Massachusetts, licensed in Massachusetts (126078) and active in the NPI registry since December 2021. She is enrolled in Medicare PECOS and maintains a secondary practice location in Brighton.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mylinh Tran Hieronymus Msw, Licsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mylinh Hieronymus reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Newton, MA 02464
- Reassigned Medicare billing, Massachusetts enrollment
- 24 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 02464 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.
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 Mylinh Hieronymus's NPI number?
The NPI number for Mylinh Hieronymus is 1699434878. It was assigned to this individual provider in the NPPES registry on December 15, 2021.
Where is Mylinh Hieronymus located?
Mylinh Hieronymus practices at 109 Oak St Ste 201, Newton, MA 02464. The listed phone number is (617) 221-3278.
What is Mylinh Hieronymus's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Mylinh Hieronymus enrolled in Medicare?
Yes. Mylinh Hieronymus is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mylinh Hieronymus's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mylinh Hieronymus reassigns Medicare benefits to Metro Boston Mental Health, PLLC (Newton, 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 Mylinh Hieronymus's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mylinh Hieronymus accept?
Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list Mylinh Hieronymus 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 Mylinh Hieronymus was last updated on July 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Mylinh Tran Hieronymus, MSW, LICSW · NPI 1699434878
Clinical provider in Newton, Massachusetts. Individual provider, active in the CMS NPPES registry since December 15, 2021.
## Identity
- **NPI:** 1699434878 (Entity type: Individual)
- **Enumerated:** December 15, 2021
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 126078 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 109 OAK ST STE 201, Newton, MA 02464-1493
- **Phone:** (617) 221-3278
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Metro Boston Mental Health, PLLC (NPI 1184313397, Newton, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 7, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1699434878) · Data from the CMS NPPES public registry.