Eric Nilles, MD
NPI 1124007109 · Emergency Medical Services (Emergency Medicine) Physician · Boston, MA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eric Nilles, MD is a Emergency Medical Services (Emergency Medicine) Physician provider in Boston, MA (NPI 1124007109).
Provider details
- NPI number
- 1124007109
- Entity type
- Individual
- Primary specialty
- Emergency Medical Services (Emergency Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 270618 (MA)
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
347 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 224 | $179 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 60 | $123 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 25 | $181 |
| Critical Care, First 30-74 Minutes99291 | 14 | $221 |
| Ultrasound of Heart, Follow-Up93308 | 12 | $26 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 12 | $86 |
Practice location
Mailing address
Additional practice locations (1)
- 200 Hawkins DrIowa City, IA 52242-1009Phone: (319) 356-6360Fax: (319) 384-9184
Registry dates
- Enumerated
- 2006-01-10
- Last updated
- 2018-11-29
Frequently asked questions
- What is Eric Nilles's NPI number?
- Eric Nilles's National Provider Identifier (NPI) is 1124007109, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eric Nilles's specialty?
- Eric Nilles is listed in the NPPES registry with a primary specialty of Emergency Medical Services (Emergency Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Eric Nilles located?
- Eric Nilles's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6106.
- What is Eric Nilles's phone number?
- The practice phone number listed in the NPPES registry for Eric Nilles is (781) 995-7077.
- Does Eric Nilles accept Medicare?
- Eric Nilles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eric Nilles's NPI active?
- Yes — Eric Nilles's NPI (1124007109) is active in the NPPES registry as of the last update on 2018-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.