William Allen Gillespie, MD
Pediatrics Physician · Durham, CT
William Allen Gillespie, MD is a pediatrics physician with a practice address in Durham, Connecticut, and NPI 1013343334, issued on Sep 18, 2013. Check the license (Connecticut 037591, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William Allen Gillespie
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License numbers
- 037591 CT
7879548 NY
Self-reported in NPPES; status is on the state search - Practice location
- 256 Main St, Durham, CT 06422
- Phone
- (860) 349-9434
- Enumerated
- Sep 18, 2013
- Record last updated
- Sep 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,043 in Connecticut → Look up another NPI →
Verify William Allen Gillespie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 037591Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average pediatrics physician in 2024
25 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 44% of 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.
William Allen Gillespie among 1,043 pediatrics physician records in Connecticut
William Allen Gillespie, 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 2013, is newer than 76% of them.
- NPI issued2013 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileNo · 9% of these records are
- Record last updated2013 · 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).
1 pediatrics physician record lists a practice address in Durham
They are 1 of the 59 NPPES records with a practice address in Durham, and 1,043 pediatrics physician records in Connecticut.
All 1,043 in Connecticut → Every provider in Durham → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Leah Gregorio, M.D.East Hampton, CT 064241023465283
- Joseph Berlenbach, P.A.Derby, CT 064181801995675
- Kenneth Burke, MDEssex, CT 064261164435871
- Nicholas Condulis, MDEssex, CT 064261255344966
- Michelle Dilorenzo, DOEssex, CT 064261073526786
- Lawrence Kaplan, M.D.Essex, CT 064261861401671
- Jaspreet Loyal, MDDerby, CT 064181750543138
- Alexis Rodriguez, MDDerby, CT 064181316264617
Common questions
What is William Allen Gillespie, MD's NPI number?
William Allen Gillespie, MD's National Provider Identifier (NPI) is 1013343334, issued on Sep 18, 2013. An NPI identifies a provider in billing; it is not a license.
Where is William Allen Gillespie, MD located?
The NPPES record lists a practice address at 256 Main St, Durham, CT, 06422. Phone: (860) 349-9434. Providers update this record themselves, so call before visiting.
How can I verify William Allen Gillespie, MD's license?
NPPES lists Connecticut license number 037591, 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 Allen Gillespie, MD prescribe under Medicare Part D?
In 2024, William Allen Gillespie, MD had 25 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.