William C. Sloan, M.D.
Gastroenterology Physician · West Orange, NJ
William C. Sloan, M.D. is a gastroenterology physician with a practice address in West Orange, New Jersey, and NPI 1578750204, issued on Sep 26, 2007. Check the license (New Jersey 25MA02230000, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William C. Sloan
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 25MA02230000 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 101 Old Short Hills RD, West Orange, NJ 07052
- Phone
- (973) 731-4600
- Enumerated
- Sep 26, 2007
- Record last updated
- Aug 9, 2026
- Fax
- (973) 731-0525
- Medicaid ID
- 1813901 NJ
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 735 in New Jersey → Look up another NPI →
Also registered at 101 Old Short Hills RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mokhtar Asaadi, M.D.Specialist1831250919
- Matthew Askin, M.D.Gastroenterology Physician1871780528
- Jed Beck, O.D.Optometrist1174521389
- Charles Bowers, M.D.Specialist1659373926
Verify William C. Sloan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA02230000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average gastroenterology physician in 2024
13 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
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 C. Sloan among 735 gastroenterology physician records in New Jersey
William C. Sloan, M.D. is one of 735 gastroenterology physician records with a practice address in New Jersey. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 56% of them.
- NPI issued2007 · 56% of these records are older, 35% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 gastroenterology physician records list a practice address in West Orange
They are 19 of the 1,370 NPPES records with a practice address in West Orange, and 735 gastroenterology physician records in New Jersey.
All 735 in New Jersey → Every provider in West Orange → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Matthew Askin, M.D.West Orange, NJ 070521871780528
- Robert Eagle, MDWest Orange, NJ 070521922012335
- Jon Green, M.D.West Orange, NJ 070521245283563
- Yunseok Namn, M.DWest Orange, NJ 070521881005395
- Alexander Perelman, D.O.West Orange, NJ 070521710399985
- Giulio Quarta, M.D.West Orange, NJ 070521306107792
- David Rahni, M.DWest Orange, NJ 070521447571096
- Lawrence Rosenthal, M.D.West Orange, NJ 070521942359021
Common questions
What is William C. Sloan, M.D.'s NPI number?
William C. Sloan, M.D.'s National Provider Identifier (NPI) is 1578750204, issued on Sep 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William C. Sloan, M.D. located?
The NPPES record lists a practice address at 101 Old Short Hills RD, West Orange, NJ, 07052. Phone: (973) 731-4600. Providers update this record themselves, so call before visiting.
How can I verify William C. Sloan, M.D.'s license?
NPPES lists New Jersey license number 25MA02230000, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William C. Sloan, M.D. prescribe under Medicare Part D?
In 2024, William C. Sloan, M.D. had 13 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. 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.