Letitia Ann Horrigan, D.O.
Internal Medicine Physician · Wakefield, RI
Letitia Ann Horrigan, D.O. is an internal medicine physician with a practice address in Wakefield, Rhode Island, and NPI 1760622617, issued on Mar 4, 2009. Check the license (Rhode Island DO00680, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Letitia Ann Horrigan
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- DO00680 RI
Self-reported in NPPES; status is on the state search - Practice location
- 481 Kingstown RD, Wakefield, RI 02879
- Phone
- (401) 789-0283
- Enumerated
- Mar 4, 2009
- Record last updated
- Jul 23, 2025
- Fax
- (401) 789-0314
- Medicaid ID
- LH86230 RI
- Medicare enrollment
- Enrolled (PECOS I20111005000591); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 2008
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,033 in Rhode Island → Look up another NPI →
Also registered at 481 Kingstown RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Paul Barratt, M.D.Internal Medicine Physician1528007432
- Rikhi D'Souza, DOInternal Medicine Physician1215924063
- Nitin Damle, MDInternal Medicine Physician1457399388
- Heidi Dorris, M.D.Internal Medicine Physician1639175482
- Ulana Farmer, M.D.Internal Medicine Physician1114967585
- Joseph Hunyady-Manes, NPNurse Practitioner1477960359
Verify Letitia Ann Horrigan 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 DO00680Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,671 Medicare Part D claims for 612 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 18 claims were for opioids.
Most prescribed
- Levothyroxine Sodium556 claims
- Atorvastatin Calcium533 claims
- Rosuvastatin Calcium403 claims
- Losartan Potassium392 claims
- Lisinopril368 claims
- Amlodipine Besylate272 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.
Industry payments in 2024: $1,226.10
61 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Letitia Ann Horrigan among 1,033 internal medicine physician records in Rhode Island
Letitia Ann Horrigan, 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 2009, is newer than 47% of them.
- NPI issued2009 · 47% of these records are older, 51% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2008 · median 2006 among the 590 with a school on file
- Record last updated2025 · 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).
30 internal medicine physician records list a practice address in Wakefield
They are 30 of the 556 NPPES records with a practice address in Wakefield, and 1,033 internal medicine physician records in Rhode Island.
All 1,033 in Rhode Island → Every provider in Wakefield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Paul Barratt, M.D.Wakefield, RI 028791528007432
- Kristine Cunniff, DOWakefield, RI 028791568400653
- Rikhi D'Souza, DOWakefield, RI 028791215924063
- Nitin Damle, MDWakefield, RI 028791457399388
- Heidi Dorris, M.D.Wakefield, RI 028791639175482
- Bruce Famiglietti, MDWakefield, RI 028791356389571
- Ulana Farmer, M.D.Wakefield, RI 028791114967585
- Shelly Johnson, MDSouth Kingstown, RI 028791528055191
Common questions
What is Letitia Ann Horrigan, D.O.'s NPI number?
Letitia Ann Horrigan, D.O.'s National Provider Identifier (NPI) is 1760622617, issued on Mar 4, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Letitia Ann Horrigan, D.O. located?
The NPPES record lists a practice address at 481 Kingstown RD, Wakefield, RI, 02879. Phone: (401) 789-0283. Providers update this record themselves, so call before visiting.
How can I verify Letitia Ann Horrigan, D.O.'s license?
NPPES lists Rhode Island license number DO00680, 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 Letitia Ann Horrigan, D.O. prescribe under Medicare Part D?
In 2024, Letitia Ann Horrigan, D.O. had 6,671 Medicare Part D claims for 612 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.