IndividualActive
John Knowles
NPI 1821290370 · Emergency Medicine Physician · Lewiston, ME
John Knowles is a Emergency Medicine Physician provider in Lewiston, ME (NPI 1821290370).
Provider details
- NPI number
- 1821290370
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 12665 (ME)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
300 Main St
Lewiston, ME 04240-7027
Phone: (207) 795-5709
Street-level locationGet directions
Mailing address
78 Rockweed Rd
West Bath, ME 04530-6631
Registry dates
- Enumerated
- 2007-06-05
- Last updated
- 2007-09-24
Frequently asked questions
- What is John Knowles's NPI number?
- John Knowles's National Provider Identifier (NPI) is 1821290370, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Knowles's specialty?
- John Knowles is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Knowles located?
- John Knowles's practice location on file with NPPES is 300 Main St, Lewiston, ME 04240-7027.
- What is John Knowles's phone number?
- The practice phone number listed in the NPPES registry for John Knowles is (207) 795-5709.
- Is John Knowles's NPI active?
- Yes — John Knowles's NPI (1821290370) is active in the NPPES registry as of the last update on 2007-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.