Dr. Allen Mansfield Dennison, MD
- Medicare services, 2024
- 20
- Medicare patients, 2024
- 21
- Part D claims, 2024
- 621
- Industry payments
- $3,919
- Affiliated sites
- 1
- Practice address
- 1180 Hope St, Bristol, RI 02809-1126
- Practice phone
- Call (401) 253-8900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Medical Associates Of Ri - Bristol
Multi-specialty group site · Bristol, Rhode Island
Find Dr. Dennison'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. Allen Mansfield Dennison is an internist in Bristol, Rhode Island
Dr. Dennison practices at Medical Associates Of Ri - Bristol in Bristol, Rhode Island.
Dr. Dennison's NPI, 1356342323, was assigned on August 2, 2005. Dr. Dennison graduated from Columbia University College of Physicians and Surgeons in 1980. Dr. Dennison holds Rhode Island license MD 06104.
- NPI
- 1356342323NPI Registry (opens in a new tab)
- NPI enumeration date
- August 2, 2005
- NPI status
- Active
- Practice phone
- (401) 253-8900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Allen Mansfield Dennison practices at Medical Associates of Ri - Bristol in Bristol, Rhode Island
Dr. Dennison's primary practice is Medical Associates of Ri - Bristol, at 1180 Hope St, Bristol, RI 02809-1126. The practice phone is (401) 253-8900.
- Medical Associates of Ri - Bristol1180 Hope St, Bristol, RI 02809-1126Phone(401) 253-8900
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Allen Mansfield Dennison is affiliated with 1 site of care and 2 medical groups
Dr. Dennison's primary practice is Medical Associates Of Ri - Bristol in Bristol, Rhode Island. The medical group on file is Medical Associates of Rhode Island. Dmand AI also links Dr. Dennison 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. Allen Mansfield Dennison's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dennison practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Medical Associates Of Ri - Bristol | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Allen Mansfield Dennison is one of 805 internists in Rhode Island
Internal medicine is Dr. Dennison's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Dennison is licensed in Rhode Island.
Specialties and state licenses
- Internal medicine, Rhode IslandPrimary
Internists near Dr. Dennison
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. Allen Mansfield Dennison billed Medicare for 20 services in 2024
CMS data shows 20 Medicare services from Dr. Dennison across 1 procedure code in 2024, for 21 Medicare patients. Medicare paid $1,384 for them. Every service was in an office.
Dr. Dennison's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1412024: 2086%
Dr. Dennison compared with the Rhode Island median for internists, 2024
- Dr. Dennison
- Rhode Island median
- Medicare services
- 20vs 34294% below
- Medicare patients
- 21vs 14586% below
- Part D claims
- 263vs 2847% below
Medians across 772 internists in Rhode Island with Dmand AI profiles that report each measure.
Dr. Dennison's most billed Medicare procedure codes, 2024
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. Dennison and other internists in Rhode Island.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Allen Mansfield Dennison treated 21 Medicare patients in 2024, average age 81
CMS counts 21 Medicare patients who saw Dr. Dennison in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.10, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Dennison's median patient age at 70, with 49% women.
Chronic conditions among Dr. Dennison's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Anxiety67%
- Mood disorders57%
- Arthritis52%
- Atrial fibrillation52%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dennison's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Allen Mansfield Dennison wrote 621 Medicare Part D claims in 2024
In 2024, Dr. Dennison wrote 621 Medicare Part D claims for 52 patients. 80% of them were for generic drugs. CMS names the drug for 263 of them, across 10 drugs with 11 or more claims each, at $21,187 in total drug cost. In 2023, CMS named 1,804 claims across 71 drugs.
Dr. Dennison's Part D claims by kind of drug, 2024
- Generic497 claims80%
- Brand-name and other124 claims20%
Dr. Dennison's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Dennison's Part D claims, 2024
- Antibiotics2%11 of 621 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,8042024: 26385%
Drugs named by CMS: 10 in 2024, 71 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Allen Mansfield Dennison received $3,919 in industry payments from 2016 to 2021
CMS Open Payments shows 248 general payments to Dr. Dennison from 37 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 98% of the total. Janssen Pharmaceuticals, Inc paid the most, $730.
General payments to Dr. Dennison by program year, 2016 to 2021
General payments to Dr. Dennison by kind, 2016 to 2021
- Food and beverage$3,85298%
- Speaker and faculty fees$541%
- Education$120%
Companies that paid Dr. Dennison the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Allen Mansfield Dennison graduated from Columbia University College of Physicians and Surgeons
Dr. Dennison graduated from Columbia University College of Physicians and Surgeons in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Allen Mansfield Dennison'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) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Allen Mansfield Dennison
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. Allen Mansfield Dennison's NPI number?
Dr. Allen Mansfield Dennison's NPI number is 1356342323. It was assigned on August 2, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Allen Mansfield Dennison?
Dr. Allen Mansfield Dennison is an internist in Bristol, Rhode Island. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Allen Mansfield Dennison practice?
Dr. Dennison practices at 1180 Hope St, Bristol, RI 02809-1126. Dr. Dennison's primary practice is Medical Associates Of Ri - Bristol in Bristol, Rhode Island. Dmand AI also links Dr. Dennison to 1 medical group.
What is Dr. Allen Mansfield Dennison's office phone number?
The practice phone on file for Dr. Dennison is (401) 253-8900.
What is Dr. Allen Mansfield Dennison's medical license number?
Dr. Dennison holds Rhode Island license MD 06104.
What medical group is Dr. Allen Mansfield Dennison part of?
Dr. Dennison is linked to Medical Associates of Rhode Island. Dmand AI links Dr. Dennison to 1 more medical group.
Does Dr. Allen Mansfield Dennison accept Medicare?
Yes. CMS data shows Dr. Dennison billed Medicare for 20 services in 2024.
How many Medicare patients does Dr. Allen Mansfield Dennison see?
CMS counts 21 Medicare patients who saw Dr. Dennison in 2024, with an average age of 81.
What services does Dr. Allen Mansfield Dennison bill to Medicare?
In 2024, Dr. Dennison's most billed Medicare services were nursing facility care (99309).
Where did Dr. Allen Mansfield Dennison go to medical school?
Dr. Dennison graduated from Columbia University College of Physicians and Surgeons in 1980.
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What drugs does Dr. Allen Mansfield Dennison prescribe most?
In 2024 Medicare Part D data, Dr. Dennison's most prescribed drugs by claims were Eliquis, Levothyroxine Sodium and Metoprolol Succinate.
Has Dr. Allen Mansfield Dennison received payments from drug or device companies?
CMS Open Payments shows $3,919 in general payments to Dr. Dennison from 37 companies from 2016 to 2021. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Allen Mansfield Dennison been practicing?
Dr. Dennison graduated from medical school in 1980, 46 years ago.
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