Michael Butler, MD
NPI 1558352922 · Emergency Medicine Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Butler, MD is a Emergency Medicine Physician provider in Worcester, MA (NPI 1558352922).
Provider details
- NPI number
- 1558352922
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 155324 (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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
524 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 | 227 | $164 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 212 | $8 |
| Critical Care, First 30-74 Minutes99291 | 45 | $198 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 40 | $111 |
Typical Medicare-allowed amounts for these services range $8–$198 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 40 | 39 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 29 | 29 |
| Prednisone | 25 | 24 |
| Azithromycin | 17 | 17 |
| Doxycycline Hyclate | 16 | 16 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 14 | 14 |
| Ondansetronbrand: Ondansetron Odt | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-03
- Last updated
- 2010-10-26
Frequently asked questions
- What is Michael Butler's NPI number?
- Michael Butler's National Provider Identifier (NPI) is 1558352922, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Butler's specialty?
- Michael Butler is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Butler located?
- Michael Butler's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is Michael Butler's phone number?
- The practice phone number listed in the NPPES registry for Michael Butler is (508) 421-1400.
- Does Michael Butler accept Medicare?
- Michael Butler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Butler's NPI active?
- Yes — Michael Butler's NPI (1558352922) is active in the NPPES registry as of the last update on 2010-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.