William Delaney, MD
Internal Medicine Physician · Danbury, CT
William Delaney, MD is an internal medicine physician with a practice address in Danbury, Connecticut, and NPI 1942387634, issued on Nov 1, 2006. Check the license (Connecticut 26131, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William Delaney
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 26131 CT
Self-reported in NPPES; status is on the state search - Practice location
- 70 Main St, Danbury, CT 06810
- Phone
- (203) 791-5030
- Enumerated
- Nov 1, 2006
- Entity
- Type 1 · individual
Also registered at 70 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Suzanne Allen, DMDStudent in an Organized Health Care Education/Training Program1427998491
- Jillian BernsteinStudent in an Organized Health Care Education/Training Program1033745997
- Masooma Bhatti, D.M.DStudent in an Organized Health Care Education/Training Program1144489600
- Susan Cizek, MDInternal Medicine Physician1790895795
- Hilarie Galloway, DMDStudent in an Organized Health Care Education/Training Program1205147741
- Cassandra HalpinStudent in an Organized Health Care Education/Training Program1306523204
Verify William Delaney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 26131Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
28% more Medicare Part D claims than the average internal medicine physician in 2024
3,557 Medicare Part D claims for 366 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 439 claims were for opioids.
Most prescribed
- Atorvastatin Calcium230 claims
- Oxycodone Hcl147 claims
- Metformin Hcl117 claims
- Lisinopril101 claims
- Gabapentin98 claims
- Alprazolam89 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.
One hospital or facility affiliation
- Connecticut Institute For Communities IncDanbury, CT
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
91 internal medicine physician records list a Danbury practice address
They are 91 of the 2,412 NPPES records with a Danbury practice address, and 2,830 internal medicine physician records in Connecticut.
All 91 in Danbury → All 2,830 in Connecticut → Every provider in Danbury →
Other internal medicine physician records in Connecticut
- Christina AbavanaBridgeport, CT1508206574
- Hoda Abdel Salam, M.D.New Britain, CT1144509316
- Gada Abdelhafiz, MDNew London, CT1467649558
- Mahmoud Abdelrahman, MDBridgeport, CT1467072868
- Simon Abi-SalehBridgeport, CT1891315529
- Gerard Abidor, D.O.Bridgeport, CT1518014539
- Richard Abraham, M.D.Canton, CT1023044252
- Odaliz Abreu-Lanfranco, MDNew Haven, CT1538276134
- Nila Aburto, MDStamford, CT1396325718
- Angelo Accomando, M.D.East Haven, CT1063454247
Common questions
What is William Delaney, MD's NPI number?
William Delaney, MD's National Provider Identifier (NPI) is 1942387634, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Delaney, MD located?
The NPPES record lists a practice address at 70 Main St, Danbury, CT, 06810. Phone: (203) 791-5030. Providers update this record themselves, so call before visiting.
How can I verify William Delaney, MD's license?
NPPES lists Connecticut license number 26131, 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 Delaney, MD prescribe under Medicare Part D?
In 2024, William Delaney, MD had 3,557 Medicare Part D claims for 366 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.