OLGA ALEXANDRA SILL FNP
NPI 1013548650
Nurse Practitioner - Family in Windham, ME
About Olga Alexandra Sill Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OLGA ALEXANDRA SILL FNP (NPI 1013548650) is an individual family provider in Windham, Maine, licensed in Maine (CNP191071) and active in the NPI registry since February 2020. She is enrolled in Medicare PECOS, is affiliated with Central Maine Medical Center, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Accepted Insurance
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
Olga Alexandra Sill Fnp 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
5Medicare enrollment records show Olga Sill reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Windham, ME 04062
- Reassigned Medicare billing, Maine enrollment
- 49 clinicians in this Medicare group
Bridgton, ME 04009
- Reassigned Medicare billing, Maine enrollment
- 563 clinicians in this Medicare group
Lewiston, ME 04240
- Reassigned Medicare billing, Maine enrollment
- 80 clinicians in this Medicare group
Lewiston, ME 04240
- Reassigned Medicare billing, Maine enrollment
- 920 clinicians in this Medicare group
Rumford, ME 04276
- Reassigned Medicare billing, Maine enrollment
- 544 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 4
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.
Central Maine Medical Center
Acute Care Hospitals · Lewiston, MEBridgton Hospital
Critical Access Hospitals · Bridgton, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04062 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 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WINDHAM, ME 04062
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 Sill's NPI number?
The NPI number for Olga Sill is 1013548650. It was assigned to this individual provider in the NPPES registry on February 3, 2020. The provider is also known as Volha Grant Fnp.
Where is Olga Sill located?
Olga Sill practices at 582 Roosevelt Trl, Windham, ME 04062. The listed phone number is (207) 892-3233.
What is Olga Sill's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Olga Sill enrolled in Medicare?
Yes. Olga Sill 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 Olga Sill's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Olga Sill reassigns Medicare benefits to 5 organizations: Maine Medical Partners (Windham, ME), Bridgton Hospital (Bridgton, ME), Community Clinical Services, Inc. (Lewiston, ME), Central Maine Medical Center (Lewiston, ME) and Rumford Hospital (Rumford, ME). 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 Olga Sill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Olga Sill accept?
Health plans from Taro Health list Olga Sill 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 Sill affiliated with any hospitals?
According to CMS data, Olga Sill is affiliated with Central Maine Medical Center and Bridgton Hospital.
When was this NPI record last updated?
The NPPES record for Olga Sill was last updated on August 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 Alexandra Sill, FNP · NPI 1013548650
Family physician in Windham, Maine. Individual provider, active in the CMS NPPES registry since February 3, 2020.
## Identity
- **NPI:** 1013548650 (Entity type: Individual)
- **Enumerated:** February 3, 2020
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** CNP191071 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 582 ROOSEVELT TRL, Windham, ME 04062-4904
- **Phone:** (207) 892-3233 · **Fax:** (207) 893-0752
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Maine Medical Partners (NPI 1144245028, Windham, ME); Bridgton Hospital (NPI 1154370153, Bridgton, ME); Community Clinical Services, Inc. (NPI 1164477568, Lewiston, ME); Central Maine Medical Center (NPI 1689653487, Lewiston, ME); Rumford Hospital (NPI 1205991122, Rumford, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** August 29, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1013548650) · Data from the CMS NPPES public registry.