MAINE STREET MEDICAL PLLC
NPI 1598477887
Internal Medicine in Brunswick, ME
About Maine Street Medical Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAINE STREET MEDICAL PLLC (NPI 1598477887) is a healthcare organization registered as an internal medicine in Brunswick, Maine and active in the NPI registry since December 2022. The organization lists Andreas Thyssen, Co-owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Maine Street Medical Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
3Medicare enrollment records show 3 clinicians reassign Medicare billing to Maine Street Medical PLLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.
Clinicians, nearest first (3)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Maine Street Medical PLLC's NPI number?
The NPI number for Maine Street Medical PLLC is 1598477887. It was assigned to this organization in the NPPES registry on December 19, 2022.
Where is Maine Street Medical PLLC located?
Maine Street Medical PLLC is located at 8 Mason St, Brunswick, ME 04011. The listed phone number is (314) 249-9759.
What is Maine Street Medical PLLC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Maine Street Medical PLLC enrolled in Medicare?
Yes. Maine Street Medical PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Maine Street Medical PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians, all in Internal Medicine, reassign their Medicare billing to Maine Street Medical PLLC. A 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 the clinician's services. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Maine Street Medical PLLC was last updated on June 8, 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.
# Maine Street Medical Pllc · NPI 1598477887
Internal Medicine organization in Brunswick, Maine. Organization record, active in the CMS NPPES registry since December 19, 2022.
## Identity
- **NPI:** 1598477887 (Entity type: Organization)
- **Enumerated:** December 19, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Andreas Thyssen, CO-OWNER
## Practice location
- **Address:** 8 MASON ST, Brunswick, ME 04011-1514
- **Phone:** (314) 249-9759
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 3 clinicians (Internal Medicine) reassign Medicare billing to this organization (form CMS-855R); 1 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 8, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1598477887) · Data from the CMS NPPES public registry.