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Dennis Knowles, O.D.
NPI 1104899061 · Optometrist · Chillicothe, OH
Dennis Knowles, O.D. is a Optometrist provider in Chillicothe, OH (NPI 1104899061).
Provider details
- NPI number
- 1104899061
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 3074 (OH)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
921 E Main St
Chillicothe, OH 45601-2843
Phone: (740) 772-2100
Fax: (740) 772-2100
Street-level locationGet directions
Mailing address
979 Simon Ln
Chillicothe, OH 45601-2161
Registry dates
- Enumerated
- 2006-02-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is Dennis Knowles's NPI number?
- Dennis Knowles's National Provider Identifier (NPI) is 1104899061, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Knowles's specialty?
- Dennis Knowles is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Dennis Knowles located?
- Dennis Knowles's practice location on file with NPPES is 921 E Main St, Chillicothe, OH 45601-2843.
- What is Dennis Knowles's phone number?
- The practice phone number listed in the NPPES registry for Dennis Knowles is (740) 772-2100.
- Is Dennis Knowles's NPI active?
- Yes — Dennis Knowles's NPI (1104899061) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.