OLGA ANGELI MCLELLAN
NPI 1942834858
Nurse Practitioner in Charlestown, MA
About Olga Angeli Mclellan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OLGA ANGELI MCLELLAN (NPI 1942834858) is an individual nurse practitioner in Charlestown, Massachusetts, licensed in Massachusetts (236422) and active in the NPI registry since February 2020. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Georgetown University School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Olga Angeli Mclellan is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Olga Mclellan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02113
- Reassigned Medicare billing, Massachusetts enrollment
- 75 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 2
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.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02129 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 02129
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 Olga Mclellan's NPI number?
The NPI number for Olga Mclellan is 1942834858. It was assigned to this individual provider in the NPPES registry on February 29, 2020.
Where is Olga Mclellan located?
Olga Mclellan practices at 15 Tufts St, Charlestown, MA 02129. The listed phone number is (857) 238-1100.
What is Olga Mclellan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Olga Mclellan enrolled in Medicare?
Yes. Olga Mclellan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Olga Mclellan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Olga Mclellan reassigns Medicare benefits to North End Community Health Committee Inc (Boston, MA). The 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 Olga Mclellan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Olga Mclellan accept?
Health plans from Taro Health list Olga Mclellan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Olga Mclellan affiliated with any hospitals?
According to CMS data, Olga Mclellan is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Olga Mclellan was last updated on May 13, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Olga Angeli Mclellan · NPI 1942834858
Nurse Practitioner physician in Charlestown, Massachusetts. Individual provider, active in the CMS NPPES registry since February 29, 2020.
## Identity
- **NPI:** 1942834858 (Entity type: Individual)
- **Enumerated:** February 29, 2020
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 236422 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 15 TUFTS ST, Charlestown, MA 02129-2711
- **Phone:** (857) 238-1100
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** North End Community Health Committee Inc (NPI 1780606608, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** May 13, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1942834858) · Data from the CMS NPPES public registry.