Dr. Arthur H. Knowlton, MD
- Medicare services, 2017
- 355
- Part D claims, 2017
- 24
- Industry payments
- $20
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 1450 Chapel St, New Haven, CT 06511-4405
- Practice phone
- Call (203) 789-3131
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Radiation Oncology Specialists Of Southern Connecticut
Multi-specialty group site · New Haven, Connecticut
Find Dr. Knowlton's 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. Arthur H. Knowlton is a therapeutic radiology physician in New Haven, Connecticut
Dr. Knowlton practices at Radiation Oncology Specialists Of Southern Connecticut in New Haven, Connecticut.
Dr. Knowlton's NPI, 1003808353, was assigned on August 22, 2005. Dr. Knowlton holds Connecticut license 014766.
- NPI
- 1003808353NPI Registry (opens in a new tab)
- NPI enumeration date
- August 22, 2005
- NPI status
- Active
- Practice phone
- (203) 789-3131
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Arthur H. Knowlton practices at Radiation Oncology Specialists of Southern Connecticut in New Haven, Connecticut
Dr. Knowlton's primary practice is Radiation Oncology Specialists of Southern Connecticut, at 1450 Chapel St, New Haven, CT 06511-4405. The practice phone is (203) 789-3131.
- Radiation Oncology Specialists of Southern Connecticut1450 Chapel St, New Haven, CT 06511-4405Phone(203) 789-3131
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Arthur H. Knowlton is affiliated with 1 site of care and 1 medical group
Dr. Knowlton's primary practice is Radiation Oncology Specialists Of Southern Connecticut in New Haven, Connecticut. Dmand AI also links Dr. Knowlton to 1 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. Arthur H. Knowlton's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knowlton practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Radiation Oncology Specialists Of Southern Connecticut | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Arthur H. Knowlton is one of 5 therapeutic radiology physicians in Connecticut
Therapeutic radiology is Dr. Knowlton's primary specialty in the NPI Registry, under taxonomy code 2085R0203X. Dr. Knowlton is licensed in Connecticut.
Specialties and state licenses
- Therapeutic radiology, ConnecticutPrimary
Therapeutic radiology physicians near Dr. Knowlton
Counts of therapeutic radiology physicians 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. Arthur H. Knowlton billed Medicare for 355 services in 2017
CMS data shows 355 Medicare services from Dr. Knowlton across 4 procedure codes in 2017. Medicare paid $14,742 for them.
Dr. Knowlton's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Imaging
- 2016: 5672017: 34140%
- Other services
- 2016: 02017: 14
Where Dr. Knowlton's Medicare services took place, 2017
- In an office30486%
- In a facility5114%
Dr. Knowlton's most billed Medicare procedure codes, 2017
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knowlton and other therapeutic radiology physicians in Connecticut.
Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. Arthur H. Knowlton wrote 24 Medicare Part D claims in 2017
In 2017, Dr. Knowlton wrote 24 Medicare Part D claims. They cover 2 drugs, with $4,753 in total drug cost. In 2016, CMS named 11 claims across 1 drug.
Dr. Knowlton's most prescribed drugs by claims, 2017
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, 2016 to 2017
- 2016
- 2017
- Claims for drugs CMS names
- 2016: 112017: 24118%
Drugs named by CMS: 2 in 2017, 1 in 2016.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Arthur H. Knowlton received $20 in industry payments in 2020
CMS Open Payments shows 1 general payment to Dr. Knowlton from 1 drug or device company in 2020. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $20.
Companies that paid Dr. Knowlton the most, 2020 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Arthur H. Knowlton'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 | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| 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. Arthur H. Knowlton
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. Arthur H. Knowlton's NPI number?
Dr. Arthur H. Knowlton's NPI number is 1003808353. It was assigned on August 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Arthur H. Knowlton?
Dr. Arthur H. Knowlton is a therapeutic radiology physician in New Haven, Connecticut. The primary specialty in the NPI Registry is Therapeutic Radiology Physician (taxonomy code 2085R0203X).
Where does Dr. Arthur H. Knowlton practice?
Dr. Knowlton practices at 1450 Chapel St, New Haven, CT 06511-4405. Dr. Knowlton's primary practice is Radiation Oncology Specialists Of Southern Connecticut in New Haven, Connecticut. Dmand AI also links Dr. Knowlton to 1 medical group.
What is Dr. Arthur H. Knowlton's office phone number?
The practice phone on file for Dr. Knowlton is (203) 789-3131.
What is Dr. Arthur H. Knowlton's medical license number?
Dr. Knowlton holds Connecticut license 014766.
Does Dr. Arthur H. Knowlton accept Medicare?
Yes. CMS data shows Dr. Knowlton billed Medicare for 355 services in 2017.
What services does Dr. Arthur H. Knowlton bill to Medicare?
In 2017, Dr. Knowlton's most billed Medicare services were radiation oncology (77014), radiation oncology (77427) and radiation oncology (77280).
What drugs does Dr. Arthur H. Knowlton prescribe most?
In 2017 Medicare Part D data, Dr. Knowlton's most prescribed drugs by claims were Eliquis and Lorazepam.
Has Dr. Arthur H. Knowlton received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Dr. Knowlton from 1 company from 2020 to 2020. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Arthur H. Knowlton been practicing?
Dr. Knowlton's NPI was assigned in 2005.
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