THEODORE C WEATHERWAX MD
NPI 1144882879
Family Medicine - Addiction Medicine in Boston, MA
About Theodore C Weatherwax Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THEODORE C WEATHERWAX MD (NPI 1144882879) is an individual addiction medicine provider in Boston, Massachusetts, licensed in Massachusetts (291350) and active in the NPI registry since July 2019. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and maintains a secondary practice location in Tacoma.
NPPES Registry Identity
Specialties & Licenses 2
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 and accepts Medicare assignment
Theodore C Weatherwax Md 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
6Medicare enrollment records show Theodore Weatherwax reassigns Medicare billing to 6 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
Rosebud, SD 57570
- Reassigned Medicare billing, Texas enrollment
- 386 clinicians in this Medicare group
Poplar, MT 59255
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: U S Health Dept Of Health & Human Services
- 306 clinicians in this Medicare group
Polacca, AZ 86042
- Reassigned Medicare billing, Texas enrollment
- 199 clinicians in this Medicare group
Sunnyside, WA 98944
- Reassigned Medicare billing, Washington 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 2
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MAPhs Indian Hospital At Rosebud
Acute Care Hospitals · Rosebud, SDAstria Sunnyside Hospital
Critical Access Hospitals · Sunnyside, WAPhysician 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 Theodore Weatherwax's NPI number?
The NPI number for Theodore Weatherwax is 1144882879. It was assigned to this individual provider in the NPPES registry on July 2, 2019.
Where is Theodore Weatherwax located?
Theodore Weatherwax practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 726-3557.
What is Theodore Weatherwax's specialty?
The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.
Is Theodore Weatherwax enrolled in Medicare?
Yes. Theodore Weatherwax 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 Theodore Weatherwax's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Theodore Weatherwax reassigns Medicare benefits to 6 organizations: The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA), Rosebud Indian Health Service (Rosebud, SD), Us Health Dept Of Health & Human Services (Poplar, MT), Dhhs Ihs Phoenix Area (Polacca, AZ) and 1 more organization, listed in the Medicare section above. 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 Theodore Weatherwax's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Theodore Weatherwax accept?
Health plans from Taro Health list Theodore Weatherwax 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 Theodore Weatherwax affiliated with any hospitals?
According to CMS data, Theodore Weatherwax is affiliated with Massachusetts General Hospital, Phs Indian Hospital At Rosebud and Astria Sunnyside Hospital.
When was this NPI record last updated?
The NPPES record for Theodore Weatherwax was last updated on November 23, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Theodore C Weatherwax, MD · NPI 1144882879
Addiction Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since July 2, 2019.
## Identity
- **NPI:** 1144882879 (Entity type: Individual)
- **Enumerated:** July 2, 2019
- **Primary specialty:** Family Medicine - Addiction Medicine · taxonomy 207QA0401X
- **State license:** 291350 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114-2621
- **Phone:** (617) 726-3557
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); Rosebud Indian Health Service (NPI 1194757369, Rosebud, SD); Us Health Dept Of Health & Human Services (NPI 1972694602, Poplar, MT); Dhhs Ihs Phoenix Area (NPI 1356628028, Polacca, AZ); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of New Mexico School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** November 23, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1144882879) · Data from the CMS NPPES public registry.