Christopher Rosenbaum, MD
NPI 1093860983 · Emergency Medicine Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Rosenbaum, MD is a Emergency Medicine Physician provider in Worcester, MA (NPI 1093860983).
Provider details
- NPI number
- 1093860983
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 231343 (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
19 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
1,037 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 | 725 | $179 |
| Ultrasound of Heart, Follow-Up93308 | 82 | $26 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 75 | $124 |
| Critical Care, First 30-74 Minutes99291 | 48 | $220 |
| Critical Care, Each Additional 30 Minutes99292 | 44 | $111 |
| Limited Ultrasound Scan Behind Abdominal Cavity76775 | 24 | $28 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-24
- Last updated
- 2010-11-04
Frequently asked questions
- What is Christopher Rosenbaum's NPI number?
- Christopher Rosenbaum's National Provider Identifier (NPI) is 1093860983, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Rosenbaum's specialty?
- Christopher Rosenbaum is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Rosenbaum located?
- Christopher Rosenbaum's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is Christopher Rosenbaum's phone number?
- The practice phone number listed in the NPPES registry for Christopher Rosenbaum is (508) 421-1400.
- Does Christopher Rosenbaum accept Medicare?
- Christopher Rosenbaum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Rosenbaum's NPI active?
- Yes — Christopher Rosenbaum's NPI (1093860983) is active in the NPPES registry as of the last update on 2010-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.