Mario Ernesto Montealegre Gallegos, MD
NPI 1255781225 · Anesthesiology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mario Ernesto Montealegre Gallegos, MD is a Anesthesiology Physician provider in Boston, MA (NPI 1255781225).
Provider details
- NPI number
- 1255781225
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 63039 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 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
80 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 48 | $216 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 32 | $50 |
Typical Medicare-allowed amounts for these services range $50–$216 (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.
Practice location
Mailing address
Additional practice locations (1)
- 333 Cedar St # 3New Haven, CT 06510-3206Phone: (203) 502-4634
Registry dates
- Enumerated
- 2016-06-20
- Last updated
- 2022-06-06
- Certified
- 2022-06-06
Frequently asked questions
- What is Mario Ernesto Montealegre Gallegos's NPI number?
- Mario Ernesto Montealegre Gallegos's National Provider Identifier (NPI) is 1255781225, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mario Ernesto Montealegre Gallegos's specialty?
- Mario Ernesto Montealegre Gallegos is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mario Ernesto Montealegre Gallegos located?
- Mario Ernesto Montealegre Gallegos's practice location on file with NPPES is 330 Brookline Ave # Rabb239, Boston, MA 02215-5400.
- What is Mario Ernesto Montealegre Gallegos's phone number?
- The practice phone number listed in the NPPES registry for Mario Ernesto Montealegre Gallegos is (617) 667-5048.
- Does Mario Ernesto Montealegre Gallegos accept Medicare?
- Mario Ernesto Montealegre Gallegos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mario Ernesto Montealegre Gallegos's NPI active?
- Yes — Mario Ernesto Montealegre Gallegos's NPI (1255781225) is active in the NPPES registry as of the last update on 2022-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.