HILARY C. BLOOM CRNA
NPI 1508389040
Nurse Anesthetist, Certified Registered in Cambridge, MA
About Hilary C. Bloom Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HILARY C. BLOOM CRNA (NPI 1508389040) is an individual nurse anesthetist, certified registered in Cambridge, Massachusetts, licensed in Massachusetts (RN2281937) and active in the NPI registry since July 2017. He is enrolled in Medicare PECOS, is affiliated with Mount Auburn Hospital, and is a graduate of Boston University School Of Medicine (2017).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Hilary C. Bloom Crna is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Hilary Bloom reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1255818472 (Massachusetts)
- 1,006 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 2,579 clinicians in this Medicare group
New Rochelle, NY 10801
- Reassigned Medicare billing, Massachusetts enrollment
- Medicare enrollment name: Massachusetts Anesthesiology Associates PC
- 14 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Auburn Hospital
Acute Care Hospitals · Cambridge, MANew England Baptist Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02138 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CAMBRIDGE, MA 02138
CAMBRIDGE, MA 02138
CAMBRIDGE, MA 02138
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Hilary Bloom's NPI number?
The NPI number for Hilary Bloom is 1508389040. It was assigned to this individual provider in the NPPES registry on July 17, 2017.
Where is Hilary Bloom located?
Hilary Bloom practices at 330 Mount Auburn St, Cambridge, MA 02138. The listed phone number is (617) 492-3500.
What is Hilary Bloom's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Hilary Bloom enrolled in Medicare?
Yes. Hilary Bloom is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Hilary Bloom's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hilary Bloom reassigns Medicare benefits to 3 organizations: Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (Boston, MA), Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA) and Massachusetts Anesthesiology Associates, P.C. (New Rochelle, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Hilary Bloom's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Hilary Bloom affiliated with any hospitals?
According to CMS data, Hilary Bloom is affiliated with Mount Auburn Hospital and New England Baptist Hospital.
When was this NPI record last updated?
The NPPES record for Hilary Bloom was last updated on July 17, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Hilary C. Bloom, CRNA · NPI 1508389040
Nurse Anesthetist, Certified Registered physician in Cambridge, Massachusetts. Individual provider, active in the CMS NPPES registry since July 17, 2017.
## Identity
- **NPI:** 1508389040 (Entity type: Individual)
- **Enumerated:** July 17, 2017
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** RN2281937 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 330 MOUNT AUBURN ST, Cambridge, MA 02138-5502
- **Phone:** (617) 492-3500
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (NPI 1952358533, Boston, MA); Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1194765438, Boston, MA); Massachusetts Anesthesiology Associates, P.C. (NPI 1902148760, New Rochelle, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Boston University School Of Medicine, class of 2017
## Record status
- **NPPES last updated:** July 17, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1508389040) · Data from the CMS NPPES public registry.