DR. ITHIEL LOKEN AMES FULLER MD
NPI 1821217746
Anesthesiology in Brattleboro, VT
About Dr. Ithiel Loken Ames Fuller Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ITHIEL LOKEN AMES FULLER MD (NPI 1821217746) is an individual anesthesiology provider in Brattleboro, Vermont, licensed in Connecticut (67242) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with Marshfield Medical Center - Eau Claire, and maintains a secondary practice location in Eau Claire.
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 and accepts Medicare assignment
Dr. Ithiel Loken Ames Fuller 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
7Medicare enrollment records show Ithiel Fuller reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Waupun, WI 53963
- Reassigned Medicare billing, Wisconsin enrollment
- 1,447 clinicians in this Medicare group
Plover, WI 54467
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Park Falls, WI 54552
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1700963048 (Wisconsin)
- 1,351 clinicians in this Medicare group
Neillsville, WI 54456
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1346239373 (Wisconsin)
- 1,283 clinicians in this Medicare group
Chetek, WI 54728
- Reassigned Medicare billing, Wisconsin enrollment
- 1,616 clinicians in this Medicare group
Richardson, TX 75082
- Reassigned Medicare billing, Vermont enrollment
- 49 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Marshfield Medical Center - Eau Claire
Acute Care Hospitals · Eau Claire, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BRATTLEBORO, VT 05301
BRATTLEBORO, VT 05301
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 Ithiel Fuller's NPI number?
The NPI number for Ithiel Fuller is 1821217746. It was assigned to this individual provider in the NPPES registry on April 25, 2007.
Where is Ithiel Fuller located?
Ithiel Fuller practices at 17 Belmont Ave Anesthesiology Dept, Brattleboro, VT 05301. The listed phone number is (802) 257-8220.
What is Ithiel Fuller's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Ithiel Fuller enrolled in Medicare?
Yes. Ithiel Fuller 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 Ithiel Fuller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ithiel Fuller reassigns Medicare benefits to 7 organizations: Beaver Dam Community Hospitals Inc (Waupun, WI), Mchs Hospitals, Inc. (Plover, WI), Marshfield Clinic Inc (Marshfield, WI), Flambeau Hospital Inc (Park Falls, WI), Memorial Hospital, Inc (Neillsville, WI) and 2 more organizations, 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 Ithiel Fuller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ithiel Fuller accept?
Health plans from Sanford Health Plan list Ithiel Fuller 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 Ithiel Fuller affiliated with any hospitals?
According to CMS data, Ithiel Fuller is affiliated with Marshfield Medical Center - Eau Claire.
When was this NPI record last updated?
The NPPES record for Ithiel Fuller was last updated on January 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Dr. Ithiel Loken Ames Fuller, MD · NPI 1821217746
Anesthesiology physician in Brattleboro, Vermont. Individual provider, active in the CMS NPPES registry since April 25, 2007.
## Identity
- **NPI:** 1821217746 (Entity type: Individual)
- **Enumerated:** April 25, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 67242 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 17 BELMONT AVE, ANESTHESIOLOGY DEPT, Brattleboro, VT 05301-7601
- **Phone:** (802) 257-8220
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Beaver Dam Community Hospitals Inc (NPI 1629374780, Waupun, WI); Mchs Hospitals, Inc. (NPI 1386249894, Plover, WI); Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI); Flambeau Hospital Inc (NPI 1194317966, Park Falls, WI); Memorial Hospital, Inc (NPI 1679746747, Neillsville, WI); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Virginia Commonwealth University, School Of Medicine, class of 2005
## Record status
- **NPPES last updated:** January 6, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1821217746) · Data from the CMS NPPES public registry.