THOMAS ARPERO CALDERON MD
NPI 1366595654
Family Medicine in Bellingham, WA
About Thomas Arpero Calderon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS ARPERO CALDERON MD (NPI 1366595654) is an individual family medicine provider in Bellingham, Washington, licensed in Washington (MD00036406) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Peacehealth United General Medical Center, and is a graduate of University Of Utah School Of Medicine (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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 Arpero Calderon 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 Reassignment
Medicare enrollment records show Thomas Calderon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sedro Woolley, WA 98284
- Reassigned Medicare billing, Texas enrollment
- 2 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 2
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Peacehealth United General Medical Center
Critical Access Hospitals · Sedro Woolley, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98226 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.
BELLINGHAM, WA 98226
BELLINGHAM, WA 98226
BELLINGHAM, WA 98226
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 Calderon's NPI number?
The NPI number for Thomas Calderon is 1366595654. It was assigned to this individual provider in the NPPES registry on January 19, 2007.
Where is Thomas Calderon located?
Thomas Calderon practices at 4455 Cordata Pkwy, Bellingham, WA 98226. The listed phone number is (360) 671-3225.
What is Thomas Calderon's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Thomas Calderon enrolled in Medicare?
Yes. Thomas Calderon 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 organization bills Medicare for Thomas Calderon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Calderon reassigns Medicare benefits to Upper Skagit Indian Tribe (Sedro Woolley, WA). 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 Thomas Calderon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Thomas Calderon affiliated with any hospitals?
According to CMS data, Thomas Calderon is affiliated with Peacehealth United General Medical Center.
When was this NPI record last updated?
The NPPES record for Thomas Calderon was last updated on September 20, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Thomas Arpero Calderon, MD · NPI 1366595654
Family Medicine physician in Bellingham, Washington. Individual provider, active in the CMS NPPES registry since January 19, 2007.
## Identity
- **NPI:** 1366595654 (Entity type: Individual)
- **Enumerated:** January 19, 2007
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** MD00036406 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 4455 CORDATA PKWY, Bellingham, WA 98226-8037
- **Phone:** (360) 671-3225 · **Fax:** (360) 671-0000
## 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:** Upper Skagit Indian Tribe (NPI 1336129295, Sedro Woolley, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Utah School Of Medicine, class of 1995
## Record status
- **NPPES last updated:** September 20, 2016
- **Other identifiers:** Medicare UPIN H05890; Medicare ID-Type Unspecified AB12070 (WA); Medicaid 8233876 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1366595654) · Data from the CMS NPPES public registry.