William S. Shieh, MD
Family Medicine Physician · South Windsor, CT
William S. Shieh, MD is a family medicine physician with a practice address in South Windsor, Connecticut, and NPI 1497731509, issued on Dec 20, 2005. Check the license (Connecticut 035837, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William S. Shieh
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 035837 CT
Self-reported in NPPES; status is on the state search - Practice location
- 1559 Sullivan Ave, South Windsor, CT 06074
- Phone
- (860) 696-2350
- Enumerated
- Dec 20, 2005
- Record last updated
- Oct 29, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (860) 696-2360
- Medicaid ID
- 001358375 CT
- Medicare enrollment
- Enrolled (PECOS I20100105000671); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 958 in Connecticut → Look up another NPI →
Also registered at 1559 Sullivan Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Natasha Bajwa, M.D.Family Medicine Physician1396199527
- Laura Catania, LCSWClinical Social Worker1952329856
- Cynthia HellerInternal Medicine Physician1639155179
- Lisa Kirschner, NPFamily Nurse Practitioner1275867301
- Ameena Madan Paramasivan, M.D.,Endocrinology, Diabetes & Metabolism Physician1609121904
- Chelsey Martin, APRNFamily Nurse Practitioner1649711631
Verify William S. Shieh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 035837Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average family medicine physician in 2024
4,458 Medicare Part D claims for 553 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 208 claims were for opioids.
Most prescribed
- Atorvastatin Calcium580 claims
- Amlodipine Besylate261 claims
- Levothyroxine Sodium138 claims
- Albuterol Sulfate Hfa127 claims
- Rosuvastatin Calcium113 claims
- Losartan Potassium104 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): 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).
2 hospitals and group practices
- Middlesex HospitalMiddletown, CT · Acute Care Hospitals3 of 5 stars
- Hartford Healthcare Medical Group IncSouth Windsor, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
William S. Shieh among 958 family medicine physician records in Connecticut
William S. Shieh, MD is one of 958 family 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1994 · median 2009 among the 611 with a school on file
- Record last updated2012 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 family medicine physician records list a practice address in South Windsor
They are 14 of the 436 NPPES records with a practice address in South Windsor, and 958 family medicine physician records in Connecticut.
All 958 in Connecticut → Every provider in South Windsor → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Natasha Bajwa, M.D.South Windsor, CT 060741396199527
- Farrah El-Khatib, DOSouth Windsor, CT 060741801425764
- Camillo Ferrari, MDSouth Windsor, CT 060741588287999
- Matthew Friedman, M.D.South Windsor, CT 060741437155850
- Raymond Kurker, MDSouth Windsor, CT 060741003966342
- Akhtar Mohammad, DOSouth Windsor, CT 060741174260947
- Gayethri Narayanswamy, M.D.South Windsor, CT 060741376670646
- Frances Natale, DOSouth Windsor, CT 060741396721833
Common questions
What is William S. Shieh, MD's NPI number?
William S. Shieh, MD's National Provider Identifier (NPI) is 1497731509, issued on Dec 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William S. Shieh, MD located?
The NPPES record lists a practice address at 1559 Sullivan Ave, South Windsor, CT, 06074. Phone: (860) 696-2350. Providers update this record themselves, so call before visiting.
How can I verify William S. Shieh, MD's license?
NPPES lists Connecticut license number 035837, 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 William S. Shieh, MD prescribe under Medicare Part D?
In 2024, William S. Shieh, MD had 4,458 Medicare Part D claims for 553 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is William S. Shieh, MD's MIPS final 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), 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.