Charles Castellano, MD
Internal Medicine Physician · Florham Park, NJ
Charles Castellano, MD is an internal medicine physician with a practice address in Florham Park, New Jersey, and NPI 1396845632, issued on Sep 25, 2006. Check the license (New Jersey 25MA10528500, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Charles Castellano
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 25MA10528500 NJ
232228 NY
Self-reported in NPPES; status is on the state search - Practice location
- 140 Park Ave, Florham Park, NJ 07932
- Phone
- (973) 404-7880
- Enumerated
- Sep 25, 2006
- Record last updated
- Feb 13, 2026
- Fax
- (973) 285-7629
- Medicare enrollment
- Enrolled (PECOS I20190606001707); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 140 Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Charles Castellano 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 25MA10528500Check 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
3,377 Medicare Part D claims for 374 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Atorvastatin Calcium543 claims
- Amlodipine Besylate270 claims
- Levothyroxine Sodium158 claims
- Lisinopril138 claims
- Metformin Hcl Er130 claims
- Rosuvastatin Calcium120 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.
Bills Medicare through one group practice
- Summit Medical Group PABerkeley Heights, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Castellano among 4,632 internal medicine physician records in New Jersey
Charles Castellano, MD is one of 4,632 internal medicine physician records with a practice address in New Jersey. 82% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2000 · median 2000 among the 3,132 with a school on file
- Record last updated2026 · 63% 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 New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 internal medicine physician records list a practice address in Florham Park
They are 23 of the 701 NPPES records with a practice address in Florham Park, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Florham Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Eric Digiacomo, MDFlorham Park, NJ 079321467431312
- Robert Freid, MDFlorham Park, NJ 079321659474104
- Richard Laudadio, M.D.Florham Park, NJ 079321386639185
- Zhexiang Li, MDFlorham Park, NJ 079321710929898
- Mark Olesnicky, MDFlorham Park, NJ 079321770503617
- Steven Pally, D.O.Florham Park, NJ 079321114921079
- Ashish Parikh, M.D.Florham Park, NJ 079321821027533
- Arthur Paulina, MDFlorham Park, NJ 079321356311328
Common questions
What is Charles Castellano, MD's NPI number?
Charles Castellano, MD's National Provider Identifier (NPI) is 1396845632, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles Castellano, MD located?
The NPPES record lists a practice address at 140 Park Ave, Florham Park, NJ, 07932. Phone: (973) 404-7880. Providers update this record themselves, so call before visiting.
How can I verify Charles Castellano, MD's license?
NPPES lists New Jersey license number 25MA10528500, 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 Charles Castellano, MD prescribe under Medicare Part D?
In 2024, Charles Castellano, MD had 3,377 Medicare Part D claims for 374 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.