DR. JAMES MICHAEL HILLIS MBBS, DPHIL
NPI 1174908594
Psychiatry & Neurology - Neurology in Boston, MA
About Dr. James Michael Hillis Mbbs, Dphil NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAMES MICHAEL HILLIS MBBS, DPHIL (NPI 1174908594) is an individual neurology provider in Boston, Massachusetts, licensed in Massachusetts (278965) and active in the NPI registry since July 2015. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses
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
Dr. James Michael Hillis Mbbs, Dphil 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 James Hillis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
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
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 3
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 James Hillis's NPI number?
The NPI number for James Hillis is 1174908594. It was assigned to this individual provider in the NPPES registry on July 27, 2015.
Where is James Hillis located?
James Hillis practices at 55 Fruit St Wacc 835, Department Of Neurology, Boston, MA 02114. The listed phone number is (617) 726-7565.
What is James Hillis's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is James Hillis enrolled in Medicare?
Yes. James Hillis 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 James Hillis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Hillis reassigns Medicare benefits to 2 organizations: The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, 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 James Hillis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is James Hillis affiliated with any hospitals?
According to CMS data, James Hillis is affiliated with Massachusetts General Hospital and Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for James Hillis was last updated on March 18, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Dr. James Michael Hillis, MBBS, DPHIL · NPI 1174908594
Neurology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since July 27, 2015.
## Identity
- **NPI:** 1174908594 (Entity type: Individual)
- **Enumerated:** July 27, 2015
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 278965 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, WACC 835, DEPARTMENT OF NEUROLOGY, Boston, MA 02114-2696
- **Phone:** (617) 726-7565
## 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): The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** March 18, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1174908594) · Data from the CMS NPPES public registry.