DR. ESTHER OLIVA MD
NPI 1134110273
Pathology - Anatomic Pathology in Boston, MA
About Dr. Esther Oliva Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ESTHER OLIVA MD (NPI 1134110273) is an individual anatomic pathology provider in Boston, Massachusetts, licensed in Massachusetts (155382) and active in the NPI registry since October 2005. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and maintains a secondary practice location in Boston.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 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
Dr. Esther Oliva Md 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
4Medicare enrollment records show Esther Oliva reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Medford, MA 02155
- Reassigned Medicare billing, Massachusetts enrollment
- 258 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 10
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MANantucket Cottage Hospital
Acute Care Hospitals · Nantucket, MAMartha's Vineyard Hospital Inc
Critical Access Hospitals · Oak Bluffs, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 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 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Esther Oliva's NPI number?
The NPI number for Esther Oliva is 1134110273. It was assigned to this individual provider in the NPPES registry on October 28, 2005.
Where is Esther Oliva located?
Esther Oliva practices at 55 Fruit St Pathology Associates Wrn 2, Boston, MA 02114. The listed phone number is (617) 726-2967.
What is Esther Oliva's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.
Is Esther Oliva enrolled in Medicare?
Yes. Esther Oliva 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 Esther Oliva's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Esther Oliva reassigns Medicare benefits to 4 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), Brigham & Womens Physicians Organization Inc (Boston, MA) and Mass General Brigham Community Physicians Inc (Medford, 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 Esther Oliva's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Esther Oliva affiliated with any hospitals?
According to CMS data, Esther Oliva is affiliated with Massachusetts General Hospital, Brigham And Women's Hospital, Nantucket Cottage Hospital and Martha's Vineyard Hospital Inc.
When was this NPI record last updated?
The NPPES record for Esther Oliva was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.
# Dr. Esther Oliva, MD · NPI 1134110273
Anatomic Pathology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since October 28, 2005.
## Identity
- **NPI:** 1134110273 (Entity type: Individual)
- **Enumerated:** October 28, 2005
- **Primary specialty:** Pathology - Anatomic Pathology · taxonomy 207ZP0101X
- **State license:** 155382 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, PATHOLOGY ASSOCIATES WRN 2, Boston, MA 02114-2696
- **Phone:** (617) 726-2967 · **Fax:** (617) 726-7474
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); Mass General Brigham Community Physicians Inc (NPI 1548638265, Medford, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Other 155382 (MA); Medicaid 3171574 (MA); Other J18135 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1134110273) · Data from the CMS NPPES public registry.