Eileen Jill Muzzillo, MD
NPI 1003343310 · Internal Medicine Physician · Fort Wayne, IN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eileen Jill Muzzillo, MD is a Internal Medicine Physician provider in Fort Wayne, IN (NPI 1003343310).
Provider details
- NPI number
- 1003343310
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- S8372 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
44 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 19 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 13 | $119 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 12 | $15 |
Typical Medicare-allowed amounts for these services range $15–$119 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 104 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 179 | 67 |
| Amlodipine Besylate | 154 | 55 |
| Levothyroxine Sodium | 149 | 54 |
| Gabapentin | 130 | 45 |
| Lisinopril | 122 | 50 |
| Prednisone | 98 | 59 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$192 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-05-17
- Last updated
- 2023-08-29
- Certified
- 2023-08-29
Frequently asked questions
- What is Eileen Jill Muzzillo's NPI number?
- Eileen Jill Muzzillo's National Provider Identifier (NPI) is 1003343310, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eileen Jill Muzzillo's specialty?
- Eileen Jill Muzzillo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Eileen Jill Muzzillo located?
- Eileen Jill Muzzillo's practice location on file with NPPES is 4402 E State Blvd, Fort Wayne, IN 46815-6917.
- What is Eileen Jill Muzzillo's phone number?
- The practice phone number listed in the NPPES registry for Eileen Jill Muzzillo is (260) 425-5600.
- Does Eileen Jill Muzzillo accept Medicare?
- Eileen Jill Muzzillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eileen Jill Muzzillo's NPI active?
- Yes — Eileen Jill Muzzillo's NPI (1003343310) is active in the NPPES registry as of the last update on 2023-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.