Terrence Ryan, MD
Internal Medicine Physician · Litchfield, CT
Terrence Ryan, MD is an internal medicine physician with a practice address in Litchfield, Connecticut, and NPI 1982617833, issued on Aug 14, 2006. Check the license (Connecticut 032934, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Terrence Ryan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 032934 CT
Self-reported in NPPES; status is on the state search - Practice location
- 340 Bantam RD, Litchfield, CT 06759
- Phone
- (860) 567-9493
- Enumerated
- Aug 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (860) 567-3933
- Medicare enrollment
- Enrolled (PECOS I20091223000455); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 340 Bantam RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Penny McEvoy, APRNAdult Health Nurse Practitioner1801806724
- Gary Shields, DPMPodiatrist1073535456
- Charles Staub, M.D.Internal Medicine Physician1427069996
Verify Terrence Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 032934Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average internal medicine physician in 2024
8,984 Medicare Part D claims for 844 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. 171 claims were for opioids.
Most prescribed
- Lisinopril541 claims
- Atorvastatin Calcium442 claims
- Amlodipine Besylate429 claims
- Simvastatin384 claims
- Levothyroxine Sodium331 claims
- Rosuvastatin Calcium258 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
- Prohealth Physicians PCWinsted, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Terrence Ryan among 2,623 internal medicine physician records in Connecticut
Terrence Ryan, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1990 · median 2004 among the 1,646 with a school on file
- Record last updated2007 · 61% 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 Connecticut 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 Litchfield
They are 3 of the 113 NPPES records with a practice address in Litchfield, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Litchfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christofer Fort, M.D.Litchfield, CT 067591366856817
- Charles Staub, M.D.Litchfield, CT 067591427069996
- Suzanne Lefebvre, M.D.Kent, CT 067571255310033
- David McIntosh, M.D.Kent, CT 067571811976699
- Marilyn Artushenia, M.D.Goshen, CT 067561104954734
- Joseph Deluca, M.D.Middlebury, CT 067621629090071
- Peter Ellis, MDMiddlebury, CT 067621912971599
- Michael Harma, MDMiddlebury, CT 067621710106547
Common questions
What is Terrence Ryan, MD's NPI number?
Terrence Ryan, MD's National Provider Identifier (NPI) is 1982617833, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Terrence Ryan, MD located?
The NPPES record lists a practice address at 340 Bantam RD, Litchfield, CT, 06759. Phone: (860) 567-9493. Providers update this record themselves, so call before visiting.
How can I verify Terrence Ryan, MD's license?
NPPES lists Connecticut license number 032934, 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 Terrence Ryan, MD prescribe under Medicare Part D?
In 2024, Terrence Ryan, MD had 8,984 Medicare Part D claims for 844 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.