Michael Warren
NPI 1528645090 · Anesthesiology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Warren is a Anesthesiology Physician provider in Boston, MA (NPI 1528645090).
Provider details
- NPI number
- 1528645090
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 1023066 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-29
- Last updated
- 2025-04-05
- Certified
- 2025-04-05
Frequently asked questions
- What is Michael Warren's NPI number?
- Michael Warren's National Provider Identifier (NPI) is 1528645090, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Warren's specialty?
- Michael Warren is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Warren located?
- Michael Warren's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2696.
- What is Michael Warren's phone number?
- The practice phone number listed in the NPPES registry for Michael Warren is (617) 726-3030.
- Does Michael Warren accept Medicare?
- Michael Warren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Warren's NPI active?
- Yes — Michael Warren's NPI (1528645090) is active in the NPPES registry as of the last update on 2025-04-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.