Francis X. Walsh, M.D.
Internal Medicine Physician · Cos Cob, CT
Francis X. Walsh, M.D. is an internal medicine physician with a practice address in Cos Cob, Connecticut, and NPI 1124174347, issued on Jan 29, 2007. Check the license (Connecticut 14105, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Francis X. Walsh
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 14105 CT
Self-reported in NPPES; status is on the state search - Practice location
- 35 River RD, Cos Cob, CT 06807
- Phone
- (203) 661-9433
- Enumerated
- Jan 29, 2007
- Record last updated
- Sep 11, 2025
- Fax
- (203) 661-2918
- Medicaid ID
- 00516867 NY
- Medicare enrollment
- Enrolled (PECOS I20040224001197); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1967
- 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 35 River RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brittany Antin, DPTPhysical Therapist1043623580
- Karen Beckman, M.D.Pediatrics Physician1063501781
- Michael Beecher, DPTPhysical Therapist1730335415
- Samantha Cohen, RDRegistered Dietitian1457173882
- Christopher Coppolecchia, DPTPhysical Therapist1154712479
- Kevin Cota, DPTPhysical Therapist1588925697
Verify Francis X. Walsh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 14105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9.4 times the Medicare Part D claims of the average internal medicine physician in 2024
29,986 Medicare Part D claims for 825 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 173 claims were for opioids.
Most prescribed
- Trazodone Hcl1,665 claims
- Atorvastatin Calcium1,642 claims
- Amlodipine Besylate1,295 claims
- Levothyroxine Sodium1,283 claims
- Losartan Potassium1,110 claims
- Escitalopram Oxalate1,044 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 MIPS final score for 2023 (Medicare payment program): 94.2 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: $2,090.48
102 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Bills Medicare through one group practice
- Rehabilitation Associates IncFairfield, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Francis X. Walsh among 2,623 internal medicine physician records in Connecticut
Francis X. Walsh, M.D. 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 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 44% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1967 · median 2004 among the 1,646 with a school on file
- Record last updated2025 · 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).
6 internal medicine physician records list a practice address in Cos Cob
They are 6 of the 125 NPPES records with a practice address in Cos Cob, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Cos Cob → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ronald Levine, MDCos Cob, CT 068071154473817
- Kush Patel, MDCos Cob, CT 068071821550294
- Joshan Shajan, M.D.Cos Cob, CT 068071790043040
- Chaula Vora, M.D.Cos Cob, CT 068071942263033
- Ellen Wolfson, M.D.Cos Cob, CT 068071184795759
- Alka Aggarwal, MDDanbury, CT 068101427041987
- Charles Cahn, M.D.Danbury, CT 068101720064504
- Karen Coblens, MDDanbury, CT 068101063479848
Common questions
What is Francis X. Walsh, M.D.'s NPI number?
Francis X. Walsh, M.D.'s National Provider Identifier (NPI) is 1124174347, issued on Jan 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Francis X. Walsh, M.D. located?
The NPPES record lists a practice address at 35 River RD, Cos Cob, CT, 06807. Phone: (203) 661-9433. Providers update this record themselves, so call before visiting.
How can I verify Francis X. Walsh, M.D.'s license?
NPPES lists Connecticut license number 14105, 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 Francis X. Walsh, M.D. prescribe under Medicare Part D?
In 2024, Francis X. Walsh, M.D. had 29,986 Medicare Part D claims for 825 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Francis X. Walsh, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.