DR. PETER JOSIAH KNOWLES D.C.
NPI 1992847180
Chiropractor in Machias, ME
About Dr. Peter Josiah Knowles D.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PETER JOSIAH KNOWLES D.C. (NPI 1992847180) is an individual chiropractor in Machias, Maine, licensed in Maine (CR581) and active in the NPI registry since February 2007. He is a graduate of Other (1981).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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. Peter Josiah Knowles D.c. 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 Peter Knowles reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Eastport, ME 04631
- Reassigned Medicare billing, Maine enrollment
- 23 clinicians in this Medicare group
Calais, ME 04619
- Reassigned Medicare billing, Maine enrollment
- 22 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.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Peter Knowles's NPI number?
The NPI number for Peter Knowles is 1992847180. It was assigned to this individual provider in the NPPES registry on February 13, 2007.
Where is Peter Knowles located?
Peter Knowles practices at 19 E Main St, Machias, ME 04654. The listed phone number is (207) 255-8001.
What is Peter Knowles's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Peter Knowles enrolled in Medicare?
Yes. Peter Knowles 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 Peter Knowles's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Peter Knowles reassigns Medicare benefits to 2 organizations: Eastport Health Care, Inc. (Eastport, ME) and St Croix Regional Family Health Center (Calais, ME). 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 Peter Knowles's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Peter Knowles accept?
Health plans from Anthem Blue Cross and Blue Shield list Peter Knowles 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.
When was this NPI record last updated?
The NPPES record for Peter Knowles was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. Peter Josiah Knowles, D.C. · NPI 1992847180
Chiropractor provider in Machias, Maine. Individual provider, active in the CMS NPPES registry since February 13, 2007.
## Identity
- **NPI:** 1992847180 (Entity type: Individual)
- **Enumerated:** February 13, 2007
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** CR581 (Maine)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 19 E MAIN ST, Machias, ME 04654-1201
- **Phone:** (207) 255-8001 · **Fax:** (207) 255-8001
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Eastport Health Care, Inc. (NPI 1093752917, Eastport, ME); St Croix Regional Family Health Center (NPI 1083379655, Calais, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1981
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Other 1042201; Medicare ID-Type Unspecified 067897 (ME); Medicaid 112990099 (ME); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1992847180) · Data from the CMS NPPES public registry.