Allen Mansfield Dennison, M.D.
Internal Medicine Physician · Barrington, RI
Allen Mansfield Dennison, M.D. is an internal medicine physician with a practice address in Barrington, Rhode Island, and NPI 1356342323, issued on Aug 2, 2005. Check the license (Rhode Island MD 06104, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Allen Mansfield Dennison
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD 06104 RI
Self-reported in NPPES; status is on the state search - Practice location
- 286 Maple Ave, Barrington, RI 02806
- Phone
- (404) 247-0610
- Enumerated
- Aug 2, 2005
- Record last updated
- Jul 10, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (401) 245-7362
- Medicaid ID
- AD00546 RI
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,033 in Rhode Island → Look up another NPI →
Also registered at 286 Maple Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elaine Hart, NPNurse Practitioner1952302697
Verify Allen Mansfield Dennison in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersRhode Island Board of Medical Licensure and Discipline
Search for license MD 06104Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average internal medicine physician in 2024
621 Medicare Part D claims for 52 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Eliquis55 claims
- Levothyroxine Sodium41 claims
- Metoprolol Succinate33 claims
- Atorvastatin Calcium28 claims
- Furosemide27 claims
- Risperidone20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Allen Mansfield Dennison among 1,033 internal medicine physician records in Rhode Island
Allen Mansfield Dennison, M.D. is one of 1,033 internal medicine physician records with a practice address in Rhode Island. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2012 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Rhode Island practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 internal medicine physician records list a practice address in Barrington
They are 3 of the 244 NPPES records with a practice address in Barrington, and 1,033 internal medicine physician records in Rhode Island.
All 1,033 in Rhode Island → Every provider in Barrington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Frank Capizzo, MD.Barrington, RI 028061992812093
- Mark Shannon, M.D.Barrington, RI 028061508941089
- Paul Agatiello, M.D.Bristol, RI 028091407961196
- Michael Baaklini, MDBristol, RI 028091922119411
- Cassandra Constantino, MDBristol, RI 028091598766537
- Bruce Fischer, MDBristol, RI 028091598766552
- Margaret Furtado, MDBristol, RI 028091831141498
- Geoffrey Hamilton, MDBristol, RI 028091467453431
Common questions
What is Allen Mansfield Dennison, M.D.'s NPI number?
Allen Mansfield Dennison, M.D.'s National Provider Identifier (NPI) is 1356342323, issued on Aug 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Allen Mansfield Dennison, M.D. located?
The NPPES record lists a practice address at 286 Maple Ave, Barrington, RI, 02806. Phone: (404) 247-0610. Providers update this record themselves, so call before visiting.
How can I verify Allen Mansfield Dennison, M.D.'s license?
NPPES lists Rhode Island license number MD 06104, as entered by the provider. Search the Rhode Island Board of Medical Licensure and Discipline at https://healthri.mylicense.com/Verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Allen Mansfield Dennison, M.D. prescribe under Medicare Part D?
In 2024, Allen Mansfield Dennison, M.D. had 621 Medicare Part D claims for 52 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.