WILLIAM RAYMOND CHASSE MD
NPI 1811094220
Otolaryngology in Waterville, ME
About William Raymond Chasse Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM RAYMOND CHASSE MD (NPI 1811094220) is an individual otolaryngology provider in Waterville, Maine, licensed in Maine (11743) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Maine General Medical Center, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (1979).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 8
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
William Raymond Chasse 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 Reassignment
Medicare enrollment records show William Chasse reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Augusta, ME 04330
- Reassigned Medicare billing, Maine enrollment
- 978 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Maine General Medical Center
Acute Care Hospitals · Augusta, MERedington Fairview General Hospital
Critical Access Hospitals · Skowhegan, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04901 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.
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 William Chasse's NPI number?
The NPI number for William Chasse is 1811094220. It was assigned to this individual provider in the NPPES registry on September 20, 2006.
Where is William Chasse located?
William Chasse practices at 325 B Kennedy Memorial Drive, Waterville, ME 04901. The listed phone number is (207) 873-0737.
What is William Chasse's specialty?
The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.
Is William Chasse enrolled in Medicare?
Yes. William Chasse 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 organization bills Medicare for William Chasse's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Chasse reassigns Medicare benefits to Mainegeneral Medical Center (Augusta, ME). 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 William Chasse's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Chasse accept?
Health plans from Anthem Blue Cross and Blue Shield list William Chasse 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 William Chasse affiliated with any hospitals?
According to CMS data, William Chasse is affiliated with Maine General Medical Center and Redington Fairview General Hospital.
When was this NPI record last updated?
The NPPES record for William Chasse was last updated on October 16, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# William Raymond Chasse, MD · NPI 1811094220
Otolaryngology physician in Waterville, Maine. Individual provider, active in the CMS NPPES registry since September 20, 2006.
## Identity
- **NPI:** 1811094220 (Entity type: Individual)
- **Enumerated:** September 20, 2006
- **Primary specialty:** Otolaryngology · taxonomy 207Y00000X
- **State license:** 11743 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 325 B KENNEDY MEMORIAL DRIVE, Waterville, ME 04901
- **Phone:** (207) 873-0737 · **Fax:** (207) 861-5446
## 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:** Mainegeneral Medical Center (NPI 1083949184, Augusta, ME), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Perelman School Of Med At The University Of Pennsylvania, class of 1979
## Record status
- **NPPES last updated:** October 16, 2012
- **Other identifiers:** Other 001940; Other M60981; Medicaid 114590000 (ME); and 5 more
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Source: [NPI Profile](https://npiprofile.com/npi/1811094220) · Data from the CMS NPPES public registry.