Ernest Defazio, MD
NPI 1477511707 · Internal Medicine Physician · Nutley, NJ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ernest Defazio, MD is a Internal Medicine Physician provider in Nutley, NJ (NPI 1477511707).
Provider details
- NPI number
- 1477511707
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA03416900 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
734 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 378 | $83 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 176 | $87 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 84 | $86 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 71 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 25 | $70 |
Typical Medicare-allowed amounts for these services range $70–$138 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 41 |
| Oxycodone Hcl | 32 |
| Rivaroxabanbrand: Xarelto | 25 |
| Pantoprazole Sodium | 25 |
| Metformin Hcl | 24 |
| Gabapentin | 23 |
| Sitagliptin Phosphatebrand: Januvia | 19 |
| Mirtazapine | 19 |
| Empagliflozin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ernest Defazio's NPI number?
- Ernest Defazio's National Provider Identifier (NPI) is 1477511707, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ernest Defazio's specialty?
- Ernest Defazio is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ernest Defazio located?
- Ernest Defazio's practice location on file with NPPES is 181 Franklin Ave, Nutley, NJ 07110-3820.
- What is Ernest Defazio's phone number?
- The practice phone number listed in the NPPES registry for Ernest Defazio is (973) 667-6660.
- Does Ernest Defazio accept Medicare?
- Ernest Defazio is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ernest Defazio's NPI active?
- Yes — Ernest Defazio's NPI (1477511707) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.