MONICA HOLLOWELL
NPI 1780899013
Pathology - Anatomic Pathology & Clinical Pathology in Boston, MA
About Monica Hollowell NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MONICA HOLLOWELL (NPI 1780899013) is an individual anatomic pathology & clinical pathology provider in Boston, Massachusetts, licensed in Massachusetts (242371) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Eastern Virginia Medical School (2005).
NPPES Registry Identity
Specialties & Licenses 3
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
Monica Hollowell 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
2Medicare enrollment records show Monica Hollowell reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 35 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 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 7
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Brigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02115 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.
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Monica Hollowell's NPI number?
The NPI number for Monica Hollowell is 1780899013. It was assigned to this individual provider in the NPPES registry on May 11, 2007.
Where is Monica Hollowell located?
Monica Hollowell practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-7431.
What is Monica Hollowell's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Monica Hollowell enrolled in Medicare?
Yes. Monica Hollowell 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 Monica Hollowell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Monica Hollowell reassigns Medicare benefits to 2 organizations: Children's Hospital Pathology Foundation, Inc. (Boston, MA) and Brigham & Womens Physicians Organization Inc (Boston, MA). 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 Monica Hollowell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Monica Hollowell affiliated with any hospitals?
According to CMS data, Monica Hollowell is affiliated with Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Monica Hollowell was last updated on June 26, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Monica Hollowell · NPI 1780899013
Anatomic Pathology & Clinical Pathology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since May 11, 2007.
## Identity
- **NPI:** 1780899013 (Entity type: Individual)
- **Enumerated:** May 11, 2007
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** 242371 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115
- **Phone:** (617) 355-7431 · **Fax:** (617) 730-0207
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Children's Hospital Pathology Foundation, Inc. (NPI 1376502112, Boston, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Eastern Virginia Medical School, class of 2005
## Record status
- **NPPES last updated:** June 26, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1780899013) · Data from the CMS NPPES public registry.