STEPHEN F TROMBLEY JR. MD
NPI 1396326112
Pediatrics in Ludington, MI
About Stephen F Trombley Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHEN F TROMBLEY JR. MD (NPI 1396326112) is an individual pediatrics provider in Ludington, Michigan, licensed in Michigan (4301511294) and active in the NPI registry since April 2021. He 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)
Stephen F Trombley Jr. Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
6Medicare enrollment records show Stephen Trombley reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ludington, MI 49431
- Reassigned Medicare billing, Michigan enrollment
- 168 clinicians in this Medicare group
Hesperia, MI 49421
- Reassigned Medicare billing, Michigan enrollment
- 180 clinicians in this Medicare group
Big Rapids, MI 49307
- Reassigned Medicare billing, Michigan enrollment
- 151 clinicians in this Medicare group
Lakeview, MI 48850
- Reassigned Medicare billing, Michigan enrollment
- 242 clinicians in this Medicare group
Hastings, MI 49058
- Reassigned Medicare billing, Michigan enrollment
- 184 clinicians in this Medicare group
Petoskey, MI 49770
- Reassigned Medicare billing, Michigan enrollment
- 149 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 Stephen Trombley's NPI number?
The NPI number for Stephen Trombley is 1396326112. It was assigned to this individual provider in the NPPES registry on April 15, 2021.
Where is Stephen Trombley located?
Stephen Trombley practices at 907 E Tinkham Ave, Ludington, MI 49431. The listed phone number is (231) 843-3477.
What is Stephen Trombley's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Stephen Trombley enrolled in Medicare?
Yes. Stephen Trombley is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Stephen Trombley's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Trombley reassigns Medicare benefits to 6 organizations: Memorial Medical Center Of West Michigan (Ludington, MI), Newaygo County General Hospital Association (Hesperia, MI), Mecosta County Medical Center (Big Rapids, MI), Spectrum Health United (Lakeview, MI), Pennock Hospital (Hastings, MI) and 1 more organization, listed in the Medicare section above. 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 Stephen Trombley's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stephen Trombley 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 Stephen Trombley 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 Stephen Trombley was last updated on September 3, 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.
# Stephen F Trombley Jr., MD · NPI 1396326112
Pediatrics physician in Ludington, Michigan. Individual provider, active in the CMS NPPES registry since April 15, 2021.
## Identity
- **NPI:** 1396326112 (Entity type: Individual)
- **Enumerated:** April 15, 2021
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 4301511294 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 907 E TINKHAM AVE, Ludington, MI 49431-1537
- **Phone:** (231) 843-3477
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Memorial Medical Center Of West Michigan (NPI 1356510259, Ludington, MI); Newaygo County General Hospital Association (NPI 1396878773, Hesperia, MI); Mecosta County Medical Center (NPI 1508146457, Big Rapids, MI); Spectrum Health United (NPI 1164766465, Lakeview, MI); Pennock Hospital (NPI 1518186295, Hastings, MI); and 1 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 3, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1396326112) · Data from the CMS NPPES public registry.