Cynthia Ronan, M.D.
Specialist · Derby, CT
Cynthia Ronan, M.D. is a specialist with a practice address in Derby, Connecticut, and NPI 1346251659, issued on Aug 11, 2006. Check the license with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cynthia Ronan
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- Practice location
- 300 Seymour Ave, Derby, CT 06418
- Phone
- (203) 736-6383
- Enumerated
- Aug 11, 2006
- Entity
- Type 1 · individual
Also registered at 300 Seymour Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Thompson, P.T.Physical Therapist1770539959
Verify Cynthia Ronan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
73% fewer Medicare Part D claims than the average specialist in 2024
407 Medicare Part D claims for 122 beneficiaries, against an average of 1,524 among the 12,477 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Estradiol39 claims
- Premarin32 claims
- Valacyclovir26 claims
- Nitrofurantoin Mono-Macro25 claims
- Fluconazole23 claims
- Medroxyprogesterone Acetate21 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.
The Medicare quality score for 2023: 97.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,141.72
107 payments, mostly food and beverage; the largest payer was Exeltis, USA Inc.. The 9,482 providers of this specialty with any payment received $4,756.65 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.
One hospital or facility affiliation
- Griffin Faculty Physicians IncDerby, CT
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Specialist providers in Connecticut
There are 519 specialist records in Connecticut.
Other specialist records in Connecticut
- Jay Abbott, M.D.Litchfield, CT1083658629
- Karen Abrams, M.D.Westport, CT1174728604
- Micheal Acocella, B.S., P.T.Greenwich, CT1992768303
- Diana Adams, M.D.Greenwich, CT1255300653
- Zosimo Adefuin, MDBridgeport, CT1598763252
- Ricki Ainbinder, LMTStamford, CT1609026525
- Patrick Albergo, M.D.West Hartford, CT1407878754
- Richard Allen, M.D.Meriden, CT1932115128
- Sarah Allen, M.D.Bridgeport, CT1376854141
- William Allen, M.D.New Haven, CT1659369361
Common questions
What is Cynthia Ronan, M.D.'s NPI number?
Cynthia Ronan, M.D.'s National Provider Identifier (NPI) is 1346251659, issued on Aug 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia Ronan, M.D. located?
The NPPES record lists a practice address at 300 Seymour Ave, Derby, CT, 06418. Phone: (203) 736-6383. Providers update this record themselves, so call before visiting.
How can I verify Cynthia Ronan, M.D.'s license?
Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Cynthia Ronan, M.D. prescribe under Medicare Part D?
In 2024, Cynthia Ronan, M.D. had 407 Medicare Part D claims for 122 beneficiaries; the average among specialist prescribers was 1,524. Part D covers Medicare prescriptions only.
What is Cynthia Ronan, M.D.'s Medicare quality score?
The 2023 MIPS final score is 97.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.