THOMAS LANCASTER MERLIN MD
NPI 1215678040
Emergency Medicine in Clackamas, OR
About Thomas Lancaster Merlin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS LANCASTER MERLIN MD (NPI 1215678040) is an individual emergency medicine provider in Clackamas, Oregon, licensed in Oregon (MD224072) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS, is affiliated with Kaiser Sunnyside Medical Center, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
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
Thomas Lancaster Merlin Md 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
2Medicare enrollment records show Thomas Merlin reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Clackamas, OR 97015
- Reassigned Medicare billing, Oregon enrollment
- 3,207 clinicians in this Medicare group
Fort Worth, TX 76104
- Reassigned Medicare billing, Texas enrollment
- 328 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Kaiser Sunnyside Medical Center
Acute Care Hospitals · Clackamas, ORKaiser Foundation Hospital Westside
Acute Care Hospitals · Hillsboro, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97015 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CLACKAMAS, OR 97015
CLACKAMAS, OR 97015
CLACKAMAS, OR 97015
CLACKAMAS, OR 97015
CLACKAMAS, OR 97015
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 Thomas Merlin's NPI number?
The NPI number for Thomas Merlin is 1215678040. It was assigned to this individual provider in the NPPES registry on April 5, 2022.
Where is Thomas Merlin located?
Thomas Merlin practices at 10180 SE Sunnyside Rd, Clackamas, OR 97015. The listed phone number is (503) 803-2000.
What is Thomas Merlin's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Thomas Merlin enrolled in Medicare?
Yes. Thomas Merlin 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 Thomas Merlin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Merlin reassigns Medicare benefits to 2 organizations: Kaiser Foundation Health Plan Of The Northwest (Clackamas, OR) and Integrative Emergency Services Physician Group PA (Fort Worth, TX). 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 Thomas Merlin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Thomas Merlin affiliated with any hospitals?
According to CMS data, Thomas Merlin is affiliated with Kaiser Sunnyside Medical Center and Kaiser Foundation Hospital Westside.
When was this NPI record last updated?
The NPPES record for Thomas Merlin was last updated on July 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.
# Thomas Lancaster Merlin, MD · NPI 1215678040
Emergency Medicine physician in Clackamas, Oregon. Individual provider, active in the CMS NPPES registry since April 5, 2022.
## Identity
- **NPI:** 1215678040 (Entity type: Individual)
- **Enumerated:** April 5, 2022
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD224072 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 10180 SE SUNNYSIDE RD, Clackamas, OR 97015-8970
- **Phone:** (503) 803-2000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Kaiser Foundation Health Plan Of The Northwest (NPI 1174851505, Clackamas, OR); Integrative Emergency Services Physician Group PA (NPI 1285922542, Fort Worth, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** July 4, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1215678040) · Data from the CMS NPPES public registry.