Rachael Brennan
NPI 1407444052 · Certified Registered Nurse Anesthetist · Boston, MA
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachael Brennan is a Certified Registered Nurse Anesthetist provider in Boston, MA (NPI 1407444052).
Provider details
- NPI number
- 1407444052
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 131932 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 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
93 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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 46 | $91 |
| Anesthesia for Extensive Surgery on Spine00670 | 18 | $323 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 17 | $82 |
| Anesthesia for Other Procedure on Upper Abdomen00790 | 12 | $206 |
Typical Medicare-allowed amounts for these services range $82–$323 (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)
- 1620 W Harrison StChicago, IL 60612-3801Phone: (888) 352-7874
Registry dates
- Enumerated
- 2021-01-08
- Last updated
- 2021-11-09
- Certified
- 2021-01-22
Frequently asked questions
- What is Rachael Brennan's NPI number?
- Rachael Brennan's National Provider Identifier (NPI) is 1407444052, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachael Brennan's specialty?
- Rachael Brennan is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Rachael Brennan located?
- Rachael Brennan's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6106.
- What is Rachael Brennan's phone number?
- The practice phone number listed in the NPPES registry for Rachael Brennan is (617) 732-5500.
- Does Rachael Brennan accept Medicare?
- Rachael Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachael Brennan's NPI active?
- Yes — Rachael Brennan's NPI (1407444052) is active in the NPPES registry as of the last update on 2021-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.