Stephen Joseph Phelan, M.D.
Endocrinology, Diabetes & Metabolism Physician · Pawcatuck, CT
Stephen Joseph Phelan, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Pawcatuck, Connecticut, and NPI 1326142332, issued on Sep 11, 2006. Check the license (Connecticut 046242, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Stephen Joseph Phelan
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 046242 CT
12629 NH
242245-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 91 Voluntown RD, Pawcatuck, CT 06379
- Phone
- (860) 599-5477
- Enumerated
- Sep 11, 2006
- Record last updated
- Feb 7, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (860) 865-2389
- Medicare enrollment
- Enrolled (PECOS I20120516000462); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 214 in Connecticut → Look up another NPI →
Also registered at 91 Voluntown RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brenda Applegate, M.D.Family Medicine Physician1255437752
- Vera Borkowski, MS, FNP-CFamily Nurse Practitioner1962885244
- Louis Iovino, D.O.Internal Medicine Physician1396825097
- William Kober, M.D.Family Medicine Physician1396724134
- Angela Moore, APRNNurse Practitioner1790898021
- Karen Murphy, PHYSICIAN ASSISTANTPhysician Assistant1225288160
Verify Stephen Joseph Phelan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 046242Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
6,549 Medicare Part D claims for 710 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 51% of claims.
Most prescribed
- Levothyroxine Sodium847 claims
- Ozempic430 claims
- Jardiance296 claims
- Lantus Solostar244 claims
- Metformin Hcl Er238 claims
- Nano 2nd Gen Pen Needle230 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): 93.3 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).
Bills Medicare through one group practice
- Northeast Medical Group IncWesterly, RI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Joseph Phelan among 214 endocrinology, diabetes & metabolism physician records in Connecticut
Stephen Joseph Phelan, M.D. is one of 214 endocrinology, diabetes & metabolism physician records with a practice address in Connecticut. 83% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2002 · median 2004 among the 145 with a school on file
- Record last updated2017 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Connecticut
There are 214 endocrinology, diabetes & metabolism physician records in Connecticut.
All 214 in Connecticut → Every provider in Pawcatuck → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Constantin Carseli, MDNorwich, CT 063601255428132
- Meshal QaiserNorwich, CT 063601932661428
- Vallari Kothari, M.D.Ansonia, CT 064011942685292
- David Moll, M.D.Ansonia, CT 064011831186584
- Liqun Song, M.D.Ansonia, CT 064011699839852
- Chi Tang, MDAnsonia, CT 064011013263870
- Jean Henry, M.D.Branford, CT 064051023174745
- Mary Windham, MDBranford, CT 064051417485830
Common questions
What is Stephen Joseph Phelan, M.D.'s NPI number?
Stephen Joseph Phelan, M.D.'s National Provider Identifier (NPI) is 1326142332, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Joseph Phelan, M.D. located?
The NPPES record lists a practice address at 91 Voluntown RD, Pawcatuck, CT, 06379. Phone: (860) 599-5477. Providers update this record themselves, so call before visiting.
How can I verify Stephen Joseph Phelan, M.D.'s license?
NPPES lists Connecticut license number 046242, 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 Stephen Joseph Phelan, M.D. prescribe under Medicare Part D?
In 2024, Stephen Joseph Phelan, M.D. had 6,549 Medicare Part D claims for 710 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Stephen Joseph Phelan, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), 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.