William Zaccone, D.O.
Internal Medicine Physician · Philadelphia, PA
William Zaccone, D.O. is an internal medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1659320653, issued on May 8, 2006. Check the license (Pennsylvania OS008556L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William Zaccone
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- OS008556L PA
Self-reported in NPPES; status is on the state search - Practice location
- 1439 E Passyunk Ave, Philadelphia, PA 19147
- Phone
- (215) 755-2869
- Enumerated
- May 8, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (215) 755-4886
- Medicaid ID
- 0116271370604 PA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 1439 E Passyunk Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marc Petrone, D.O.Internal Medicine Physician1538118690
Verify William Zaccone in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS008556LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% more Medicare Part D claims than the average internal medicine physician in 2024
3,374 Medicare Part D claims for 251 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 257 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen141 claims
- Omeprazole136 claims
- Alprazolam127 claims
- Atorvastatin Calcium119 claims
- Lisinopril115 claims
- Gabapentin105 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: $30.44
2 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
William Zaccone among 7,300 internal medicine physician records in Pennsylvania
William Zaccone, D.O. is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 64% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2026 · 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 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,855 internal medicine physician records list a practice address in Philadelphia
They are 1,855 of the 42,849 NPPES records with a practice address in Philadelphia, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Philadelphia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kwaku Amexo, MDPhiladelphia, PA 191471992750186
- Nikhil Chinmaya, DOPhiladelphia, PA 191471003298118
- Edmund Lafer, M.DPhiladelphia, PA 191471184001117
- Chhaya Patel, D.O.Philadelphia, PA 191471265452841
- Marc Petrone, D.O.Philadelphia, PA 191471538118690
- Ngoc An Phan, M.D.Philadelphia, PA 191471346246998
- Tudor Sturzoiu, MDPhiladelphia, PA 191471790341964
- Valerie Weil, M.D.Philadelphia, PA 191471477700318
Common questions
What is William Zaccone, D.O.'s NPI number?
William Zaccone, D.O.'s National Provider Identifier (NPI) is 1659320653, issued on May 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Zaccone, D.O. located?
The NPPES record lists a practice address at 1439 E Passyunk Ave, Philadelphia, PA, 19147. Phone: (215) 755-2869. Providers update this record themselves, so call before visiting.
How can I verify William Zaccone, D.O.'s license?
NPPES lists Pennsylvania license number OS008556L, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Zaccone, D.O. prescribe under Medicare Part D?
In 2024, William Zaccone, D.O. had 3,374 Medicare Part D claims for 251 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.