MARGARET TOMLINSON MIDDLEBROOK MD
NPI 1235120916
Pediatrics in Ludington, MI
About Margaret Tomlinson Middlebrook Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET TOMLINSON MIDDLEBROOK MD (NPI 1235120916) is an individual pediatrics provider in Ludington, Michigan, licensed in North Carolina (200101102) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS.
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)
Margaret Tomlinson Middlebrook Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Margaret Middlebrook reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ludington, MI 49431
- Reassigned Medicare billing, Michigan enrollment
- 168 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49431 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LUDINGTON, MI 49431
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 Margaret Middlebrook's NPI number?
The NPI number for Margaret Middlebrook is 1235120916. It was assigned to this individual provider in the NPPES registry on November 2, 2005.
Where is Margaret Middlebrook located?
Margaret Middlebrook practices at 907 E Tinkham Ave, Ludington, MI 49431. The listed phone number is (231) 843-3477.
What is Margaret Middlebrook's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Margaret Middlebrook enrolled in Medicare?
Yes. Margaret Middlebrook is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Margaret Middlebrook's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Middlebrook reassigns Medicare benefits to Memorial Medical Center Of West Michigan (Ludington, MI). 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 Margaret Middlebrook's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Middlebrook accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Margaret Middlebrook 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.
When was this NPI record last updated?
The NPPES record for Margaret Middlebrook was last updated on February 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Margaret Tomlinson Middlebrook, MD · NPI 1235120916
Pediatrics physician in Ludington, Michigan. Individual provider, active in the CMS NPPES registry since November 2, 2005.
## Identity
- **NPI:** 1235120916 (Entity type: Individual)
- **Enumerated:** November 2, 2005
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 200101102 (North Carolina)
- **Sole proprietor:** No
## Practice location
- **Address:** 907 E TINKHAM AVE, Ludington, MI 49431-1537
- **Phone:** (231) 843-3477 · **Fax:** (231) 843-9042
## 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:** Memorial Medical Center Of West Michigan (NPI 1356510259, Ludington, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 15, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1235120916) · Data from the CMS NPPES public registry.