Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Peter Josiah Knowles, DC

Individual provider Chiropractor · NPI 1992847180

Dr. Peter Josiah Knowles, DC is a Chiropractic in Machias, Maine. Qualified in 1981, 45 years ago. Practices with St Croix Regional Family Health Center, a 21-clinician group and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
45
Licensed in
ME
In the registry since
2007
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

19 E Main St
Machias, ME 04654-1201
Phone: (207) 255-8001
Fax: (207) 255-8001
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence CR581 (ME)

Record details

NPI number1992847180
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedFebruary 13, 2007
Last updated in NPPESJuly 8, 2007
Mailing address19 E Main St, Po Box 499, Machias, ME 04654-1201

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCHIROPRACTIC
Medical schoolOTHER
Graduated 1981 (45 years in practice)
Group practice St Croix Regional Family Health Center — 21 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare