Ernest Defazio, MD
Internal Medicine Physician · Nutley, NJ
Ernest Defazio, MD is an internal medicine physician with a practice address in Nutley, New Jersey, and NPI 1477511707, issued on May 3, 2006. Check the license (New Jersey 25MA03416900, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ernest Defazio
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25MA03416900 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 181 Franklin Ave, Nutley, NJ 07110
- Phone
- (973) 667-6660
- Enumerated
- May 3, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (973) 667-2134
- Medicaid ID
- 0829005 NJ
- Medicare enrollment
- Enrolled (PECOS I20051010000071); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 181 Franklin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Samantha De Almeida, APNPrimary Care Nurse Practitioner1770931396
- Louis Fusilli, MD FACCCardiovascular Disease Physician1790702678
Verify Ernest Defazio 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 25MA03416900Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average internal medicine physician in 2024
677 Medicare Part D claims for 23 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 42 claims were for opioids.
Most prescribed
- Atorvastatin Calcium41 claims
- Oxycodone Hcl32 claims
- Pantoprazole Sodium25 claims
- Xarelto25 claims
- Metformin Hcl24 claims
- Gabapentin23 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
- Internet Medical Group P CNutley, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ernest Defazio among 4,632 internal medicine physician records in New Jersey
Ernest Defazio, 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
- Graduated1975 · median 2000 among the 3,132 with a school on file
- Record last updated2007 · 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).
20 internal medicine physician records list a practice address in Nutley
They are 20 of the 520 NPPES records with a practice address in Nutley, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Nutley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- James Agresti, MDNutley, NJ 071101255389813
- James Agresti, DONutley, NJ 071101578511135
- Maryann Alessio, DONutley, NJ 071101750499257
- Marina Alexandrova, M.D.Nutley, NJ 071101073687240
- Joseph Brignola, MDNutley, NJ 071101508824897
- Anthony Califano, MDNutley, NJ 071101700955010
- Louis Citarelli, MDNutley, NJ 071101063520484
- Carl Costanza, M.D.Nutley, NJ 071101669400651
Common questions
What is Ernest Defazio, MD's NPI number?
Ernest Defazio, MD's National Provider Identifier (NPI) is 1477511707, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ernest Defazio, MD located?
The NPPES record lists a practice address at 181 Franklin Ave, Nutley, NJ, 07110. Phone: (973) 667-6660. Providers update this record themselves, so call before visiting.
How can I verify Ernest Defazio, MD's license?
NPPES lists New Jersey license number 25MA03416900, 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 Ernest Defazio, MD prescribe under Medicare Part D?
In 2024, Ernest Defazio, MD had 677 Medicare Part D claims for 23 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.