JOANNA MACHAIN
NPI 1932561289
Nurse Practitioner in Boston, MA
About Joanna Machain NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOANNA MACHAIN (NPI 1932561289) is an individual nurse practitioner in Boston, Massachusetts, licensed in Massachusetts (RN2307754) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS, is affiliated with Northeast Hospital Corporation, and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Joanna Machain 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
5Medicare enrollment records show Joanna Machain reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02109
- Reassigned Medicare billing, Massachusetts enrollment
- 27 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Weston, MA 02493
- Reassigned Medicare billing, Massachusetts enrollment
- 25 clinicians in this Medicare group
Danvers, MA 01923
- Reassigned Medicare billing, Massachusetts enrollment
- 64 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 6
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.
Northeast Hospital Corporation
Acute Care Hospitals · Beverly, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
BOSTON, MA 02109
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 Joanna Machain's NPI number?
The NPI number for Joanna Machain is 1932561289. It was assigned to this individual provider in the NPPES registry on March 25, 2016. The provider is also known as Joanna Reiman.
Where is Joanna Machain located?
Joanna Machain practices at 84 State St Suite 660, Boston, MA 02109. The listed phone number is (800) 370-3651.
What is Joanna Machain's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Joanna Machain enrolled in Medicare?
Yes. Joanna Machain 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 Joanna Machain's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joanna Machain reassigns Medicare benefits to 5 organizations: Meditelecare Of Massachusetts, PLLC (Boston, MA), The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA), Ajay Anand MD PC (Weston, MA) and Care Dimensions, Inc. (Danvers, 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 Joanna Machain's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Joanna Machain affiliated with any hospitals?
According to CMS data, Joanna Machain is affiliated with Northeast Hospital Corporation.
When was this NPI record last updated?
The NPPES record for Joanna Machain was last updated on March 9, 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.
# Joanna Machain · NPI 1932561289
Nurse Practitioner physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 25, 2016.
## Identity
- **NPI:** 1932561289 (Entity type: Individual)
- **Enumerated:** March 25, 2016
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** RN2307754 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 84 STATE ST, SUITE 660, Boston, MA 02109-2202
- **Phone:** (800) 370-3651
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Meditelecare Of Massachusetts, PLLC (NPI 1003496506, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); Ajay Anand MD PC (NPI 1558403154, Weston, MA); Care Dimensions, Inc. (NPI 1316084890, Danvers, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** March 9, 2017
---
Source: [NPI Profile](https://npiprofile.com/npi/1932561289) · Data from the CMS NPPES public registry.