Dr. Brendan Jonathan Knowles, DO
- Medicare services, 2020
- 1,120
- Part D claims, 2020
- 1,993
- Industry payments
- $727
- Affiliated sites
- 1
- Medical groups
- 2
- Practice address
- 501 20th St Suite 404 Suite 404, Knoxville, TN 37916-1822
- Practice phone
- Call (865) 522-6964
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Summit Medical Group - Knoxville (20th St)
Primary care practice · Knoxville, Tennessee
Find Dr. Knowles' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Brendan Jonathan Knowles is an internist in Dayton, Ohio
Dr. Knowles practices at Summit Medical Group - Knoxville (20th St) in Knoxville, Tennessee.
Dr. Knowles' NPI, 1912343542, was assigned on May 22, 2013. Dr. Knowles holds Tennessee license 3349.
- NPI
- 1912343542NPI Registry (opens in a new tab)
- NPI enumeration date
- May 22, 2013
- NPI status
- Active
- Practice phone
- (865) 522-6964
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brendan Jonathan Knowles practices in Knoxville and Dayton
Dr. Knowles' primary practice is Summit Medical Group - Knoxville (20th St), at 501 20th St Suite 404 Suite 404, Knoxville, TN 37916-1822. The practice phone is (865) 522-6964. The NPI Registry lists Dr. Knowles' practice address as 3535 Southern Blvd, Dayton, OH 45429.
- Summit Medical Group - Knoxville (20th St)Primary501 20th St Suite 404 Suite 404, Knoxville, TN 37916-1822Phone(865) 522-6964
- NPI Registry address3535 Southern Blvd, Dayton, OH 45429 · Montgomery CountyPhone(865) 522-6964
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Brendan Jonathan Knowles is affiliated with 1 site of care and 2 medical groups
Dr. Knowles' primary practice is Summit Medical Group - Knoxville (20th St) in Knoxville, Tennessee. The medical group on file is Summit Medical Group. Dmand AI also links Dr. Knowles to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Brendan Jonathan Knowles' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knowles practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Summit Medical Group - Knoxville (20th St) | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brendan Jonathan Knowles is one of 4,708 internists in Ohio
Internal medicine is Dr. Knowles' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Knowles is licensed in Tennessee.
Specialties and state licenses
- Internal medicine, TennesseePrimary
Internists near Dr. Knowles
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Brendan Jonathan Knowles billed Medicare for 1,120 services in 2020
CMS data shows 1,120 Medicare services from Dr. Knowles across 17 procedure codes in 2020. Medicare paid $24,112 for them. Every service was in an office.
Dr. Knowles' Medicare services by type, 2019 to 2020
- 2019
- 2020
- Lab and pathology
- 2019: 1,7072020: 60165%
- Office and hospital visits
- 2019: 8662020: 24871%
- Surgery
- 2019: 4562020: 15366%
- Tests and treatments
- 2019: 2542020: 4981%
- Other services
- 2019: 3452020: 4487%
- Imaging
- 2019: 872020: 2571%
Dr. Knowles compared with the Ohio median for internists, 2020
- Dr. Knowles
- Ohio median
- Medicare services
- 1,120vs 4872.3 times
- Part D claims
- 1,993vs 2946.8 times
Medians across 4,703 internists in Ohio with Dmand AI profiles that report each measure.
Dr. Knowles' most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Knowles?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knowles and other internists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brendan Jonathan Knowles' patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Knowles' median patient age at 65, with 34% women.
Dr. Knowles' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women34%
- Men66%
Source: Dmand AI Patient Panel Data
Dr. Brendan Jonathan Knowles wrote 1,993 Medicare Part D claims in 2020
In 2020, Dr. Knowles wrote 1,993 Medicare Part D claims. They cover 68 drugs, with $136,812 in total drug cost. In 2019, CMS named 4,806 claims across 118 drugs.
Dr. Knowles' most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 4,8062020: 1,99359%
Drugs named by CMS: 68 in 2020, 118 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Brendan Jonathan Knowles received $727 in industry payments from 2016 to 2020
CMS Open Payments shows 49 general payments to Dr. Knowles from 19 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $91.
General payments to Dr. Knowles by program year, 2016 to 2020
Companies that paid Dr. Knowles the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Brendan Jonathan Knowles's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Brendan Jonathan Knowles
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Brendan Jonathan Knowles' NPI number?
Dr. Brendan Jonathan Knowles' NPI number is 1912343542. It was assigned on May 22, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Brendan Jonathan Knowles?
Dr. Brendan Jonathan Knowles is an internist in Dayton, Ohio. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Brendan Jonathan Knowles practice?
Dr. Knowles practices at 501 20th St Suite 404 Suite 404, Knoxville, TN 37916-1822. Dr. Knowles also practices at 3535 Southern Blvd, Dayton, OH 45429. Dr. Knowles' primary practice is Summit Medical Group - Knoxville (20th St) in Knoxville, Tennessee. Dmand AI also links Dr. Knowles to 1 medical group.
What is Dr. Brendan Jonathan Knowles' office phone number?
The practice phone on file for Dr. Knowles is (865) 522-6964.
What is Dr. Brendan Jonathan Knowles' medical license number?
Dr. Knowles holds Tennessee license 3349.
What medical group is Dr. Brendan Jonathan Knowles part of?
Dr. Knowles is linked to Summit Medical Group. Dmand AI links Dr. Knowles to 1 more medical group.
Does Dr. Brendan Jonathan Knowles accept Medicare?
Yes. CMS data shows Dr. Knowles billed Medicare for 1,120 services in 2020.
What services does Dr. Brendan Jonathan Knowles bill to Medicare?
In 2020, Dr. Knowles' most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and lab and pathology test (80053).
What drugs does Dr. Brendan Jonathan Knowles prescribe most?
In 2020 Medicare Part D data, Dr. Knowles' most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. Brendan Jonathan Knowles received payments from drug or device companies?
CMS Open Payments shows $727 in general payments to Dr. Knowles from 19 companies from 2016 to 2020. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Brendan Jonathan Knowles been practicing?
Dr. Knowles' NPI was assigned in 2013.
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