William Zempsky, MD
Pediatrics Physician · Hartford, CT
William Zempsky, MD is a pediatrics physician with a practice address in Hartford, Connecticut, and NPI 1508832650, issued on Feb 28, 2006. Check the license (Connecticut 035940, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William Zempsky
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 035940 CT
Self-reported in NPPES; status is on the state search - Practice location
- 282 Washington St, Hartford, CT 06106
- Phone
- (860) 545-9200
- Enumerated
- Feb 28, 2006
- Record last updated
- Sep 23, 2022
- Fax
- (860) 545-9134
- Medicaid ID
- 001359406 CT
- Medicare enrollment
- Enrolled (PECOS I20090203000174); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,043 in Connecticut → Look up another NPI →
Also registered at 282 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Barbara AdamsPediatric Nurse Practitioner1962663583
- Ariana Adamski-Larson, MDStudent in an Organized Health Care Education/Training Program1518655083
- Taylor Aglio, M.D.Pediatric Hematology & Oncology Physician1285015453
- Sabina Ahmad, M.D.Pediatric Pulmonology Physician1134476658
- Neveen Al-Said, DOPediatrics Physician1851978548
- Paula Algranati, MDPediatrics Physician1467424317
Verify William Zempsky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 035940Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average pediatrics physician in 2024
62 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Emgality Pen13 claims
- Clonazepam11 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.
Industry payments in 2024: $7,880.00
4 payments; by number, the most common kind was honoraria; the largest payer was H. Lundbeck A S. The 21,580 providers of this specialty with any payment received $842.05 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
- Connecticut Children's Specialty Group, IncHartford, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Zempsky among 1,043 pediatrics physician records in Connecticut
William Zempsky, MD is one of 1,043 pediatrics physician records with a practice address in Connecticut. 32% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileYes · 9% of these records are
- Graduated1988 · median 2012 among the 92 with a school on file
- Record last updated2022 · 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 208000000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
114 pediatrics physician records list a practice address in Hartford
They are 114 of the 6,317 NPPES records with a practice address in Hartford, and 1,043 pediatrics physician records in Connecticut.
All 1,043 in Connecticut → Every provider in Hartford → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Paula Algranati, MDHartford, CT 061061467424317
- Leonard Banco, MDHartford, CT 061061093787863
- Robert Englander, MDHartford, CT 061061821061540
- Jacqueline Hartzler, MDHartford, CT 061061336112051
- Richard Johnson, MDHartford, CT 061061508830837
- David Krol, MD, MPHHartford, CT 061061710963863
- Nina Livingston, MDHartford, CT 061061932174380
- Margaret McLaren, MDHartford, CT 061061649245184
Common questions
What is William Zempsky, MD's NPI number?
William Zempsky, MD's National Provider Identifier (NPI) is 1508832650, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Zempsky, MD located?
The NPPES record lists a practice address at 282 Washington St, Hartford, CT, 06106. Phone: (860) 545-9200. Providers update this record themselves, so call before visiting.
How can I verify William Zempsky, MD's license?
NPPES lists Connecticut license number 035940, 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 Zempsky, MD prescribe under Medicare Part D?
In 2024, William Zempsky, MD had 62 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.