Arthur Robert De Siimone, M.D.
Internal Medicine Physician · Old Tappan, NJ
Arthur Robert De Siimone, M.D. is an internal medicine physician with a practice address in Old Tappan, New Jersey, and NPI 1114107497, issued on Nov 5, 2007. Check the license (New Jersey 20965, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Arthur Robert De Siimone
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20965 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 5 Corrigan Way, Old Tappan, NJ 07675
- Phone
- (201) 767-1443
- Enumerated
- Nov 5, 2007
- Record last updated
- Nov 5, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Verify Arthur Robert De Siimone 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 20965Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
35 Medicare Part D claims, against an average of 3,176 among the 108,855 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.
5 internal medicine physician records list a practice address in Old Tappan
They are 5 of the 92 NPPES records with a practice address in Old Tappan, and 4,632 internal medicine physician records in New Jersey.
All 5 in Old Tappan → All 4,632 in New Jersey → Every provider in Old Tappan →
Other internal medicine physician records in New Jersey
- Joseph Aaron, MD, FACPShort Hills, NJ1861584633
- Sirike Aasmaa, DOMontville, NJ1861549925
- Holly Abate Bersalona, M.D.Sea Girt, NJ1669500492
- Kaniz Zehra Abbas, MDTrenton, NJ1598253858
- Shahida Abbas, MDOld Bridge, NJ1023104098
- Shahed AbbasiNewark, NJ1477810752
- Samih Abbassi, MDWest Orange, NJ1750380358
- Somaya Abboud, MDWest Orange, NJ1326089004
- Hilal Abboushi, MDBloomfield, NJ1548378029
- Anthony Abbruzzi, D.O.Pleasantville, NJ1629034905
Common questions
What is Arthur Robert De Siimone, M.D.'s NPI number?
Arthur Robert De Siimone, M.D.'s National Provider Identifier (NPI) is 1114107497, issued on Nov 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Arthur Robert De Siimone, M.D. located?
The NPPES record lists a practice address at 5 Corrigan Way, Old Tappan, NJ, 07675. Phone: (201) 767-1443. Providers update this record themselves, so call before visiting.
How can I verify Arthur Robert De Siimone, M.D.'s license?
NPPES lists New Jersey license number 20965, 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 Arthur Robert De Siimone, M.D. prescribe under Medicare Part D?
In 2024, Arthur Robert De Siimone, M.D. had 35 Medicare Part D claims; 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.