Leonard Anthony Mannarelli, D.O.
Internal Medicine Physician · Providence, RI
Leonard Anthony Mannarelli, D.O. is an internal medicine physician with a practice address in Providence, Rhode Island, and NPI 1982770764, issued on Nov 25, 2006. Check the license (Rhode Island DO452, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Leonard Anthony Mannarelli
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- DO452 RI
Self-reported in NPPES; status is on the state search - Practice location
- 50 Maude St, Providence, RI 02908
- Phone
- (401) 456-2145
- Enumerated
- Nov 25, 2006
- Record last updated
- Jan 5, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,033 in Rhode Island → Look up another NPI →
Also registered at 50 Maude St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Leonard Anthony Mannarelli 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 DO452Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% more Medicare Part D claims than the average internal medicine physician in 2024
6,350 Medicare Part D claims for 387 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 192 claims were for opioids.
Most prescribed
- Amlodipine Besylate296 claims
- Atorvastatin Calcium277 claims
- Lisinopril263 claims
- Omeprazole253 claims
- Gabapentin243 claims
- Levothyroxine Sodium231 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.
Leonard Anthony Mannarelli among 1,033 internal medicine physician records in Rhode Island
Leonard Anthony Mannarelli, D.O. 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 62% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2026 · 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).
511 internal medicine physician records list a practice address in Providence
They are 511 of the 9,647 NPPES records with a practice address in Providence, and 1,033 internal medicine physician records in Rhode Island.
All 1,033 in Rhode Island → Every provider in Providence → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeffrey Austerlitz, M.D.Providence, RI 029081356363527
- Dawna Blake, M.D.Providence, RI 029081548285489
- Gwyneth Granton, MDProvidence, RI 029081336132935
- Guang Hu, M.D.Providence, RI 029081598783524
- Laura Magan, MDProvidence, RI 029081962441543
- Thomas O'Toole, M.D.Providence, RI 029081790705739
- Lorna RussellProvidence, RI 029081134140866
- Parviz Shavandy, M.D.Providence, RI 029081841247889
Common questions
What is Leonard Anthony Mannarelli, D.O.'s NPI number?
Leonard Anthony Mannarelli, D.O.'s National Provider Identifier (NPI) is 1982770764, issued on Nov 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Anthony Mannarelli, D.O. located?
The NPPES record lists a practice address at 50 Maude St, Providence, RI, 02908. Phone: (401) 456-2145. Providers update this record themselves, so call before visiting.
How can I verify Leonard Anthony Mannarelli, D.O.'s license?
NPPES lists Rhode Island license number DO452, 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 Leonard Anthony Mannarelli, D.O. prescribe under Medicare Part D?
In 2024, Leonard Anthony Mannarelli, D.O. had 6,350 Medicare Part D claims for 387 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.