Miriam P. Oneil, MD
Geriatric Medicine (Internal Medicine) Physician · Farmington, CT
Miriam P. Oneil, MD is a geriatric medicine (internal medicine) physician with a practice address in Farmington, Connecticut, and NPI 1679192835, issued on Apr 8, 2020. Check the license (Connecticut 82634, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Miriam P. Oneil
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 82634 CT
Self-reported in NPPES; status is on the state search - Practice location
- 21 South RD, Farmington, CT 06032
- Phone
- (860) 679-4862
- Enumerated
- Apr 8, 2020
- Record last updated
- Sep 16, 2025
- Fax
- (860) 679-0123
- Medicare enrollment
- Enrolled (PECOS I20250821003131); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2020
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 104 in Connecticut → Look up another NPI →
Also registered at 21 South RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christy Aurigemma, AU.D.Audiologist1013130392
- Adrienne Berke, MDDermatopathology Physician1114922879
- Jenna Bordelon Kelsey, MDDermatology Physician1215383740
- Kyung Chung, MDInternal Medicine Physician1477657088
- Victoria Cialfi, MHS, PA-CPhysician Assistant1912949751
- Sally Cote, PA-CMedical Physician Assistant1891974077
Verify Miriam P. Oneil in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 82634Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
287 Medicare Part D claims for 50 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium30 claims
- Amlodipine Besylate15 claims
- Levothyroxine Sodium15 claims
- Trazodone Hcl14 claims
- Eliquis12 claims
- Omeprazole11 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.
Bills Medicare through one group practice
- University OF Connecticut Health CenterFarmington, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Miriam P. Oneil among 104 geriatric medicine (internal medicine) physician records in Connecticut
Miriam P. Oneil, MD is one of 104 geriatric medicine (internal medicine) physician records with a practice address in Connecticut. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 95% of them.
- NPI issued2020 · 95% of these records are older, under 1% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2020 · median 1998 among the 68 with a school on file
- Record last updated2025 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Connecticut
There are 104 geriatric medicine (internal medicine) physician records in Connecticut.
All 104 in Connecticut → Every provider in Farmington → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Elizabeth Degnall, MDFarmington, CT 060321205463635
- James Judge, M.D.Farmington, CT 060321154327369
- Germine Soliman, M.D.Farmington, CT 060321669812715
- Karina Berg, MDFarmington, CT 060301871617159
- Victoria Costello, M.D.Farmington, CT 060301265578280
- Jaclyn Jaeger, D.O.Farmington, CT 060301578806840
- Anne Kenny, MDFarmington, CT 060301043293780
- Jatupol Kositsawat, M.D.Farmington, CT 060301841223286
Common questions
What is Miriam P. Oneil, MD's NPI number?
Miriam P. Oneil, MD's National Provider Identifier (NPI) is 1679192835, issued on Apr 8, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Miriam P. Oneil, MD located?
The NPPES record lists a practice address at 21 South RD, Farmington, CT, 06032. Phone: (860) 679-4862. Providers update this record themselves, so call before visiting.
How can I verify Miriam P. Oneil, MD's license?
NPPES lists Connecticut license number 82634, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Miriam P. Oneil, MD prescribe under Medicare Part D?
In 2024, Miriam P. Oneil, MD had 287 Medicare Part D claims for 50 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.