DR. TIMOTHY JOHN FERNSTROM D.O.
NPI 1457552168
Internal Medicine in Portland, OR
About Dr. Timothy John Fernstrom D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TIMOTHY JOHN FERNSTROM D.O. (NPI 1457552168) is an individual internal medicine provider in Portland, Oregon, licensed in Oregon (DO26647) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Wellstar Spalding Medical Center, and maintains a secondary practice location in Reston.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Accepted Insurance
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
Dr. Timothy John Fernstrom D.o. 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
22Medicare enrollment records show Timothy Fernstrom reassigns Medicare billing to 22 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Portland, OR 97210
- Reassigned Medicare billing, Oregon enrollment
- 1,248 clinicians in this Medicare group
Lewiston, ID 83501
- Reassigned Medicare billing, Idaho enrollment
- 20 clinicians in this Medicare group
Spokane, WA 99204
- Reassigned Medicare billing, Oregon enrollment
- 82 clinicians in this Medicare group
Missoula, MT 59804
- Reassigned Medicare billing, Montana enrollment
- 30 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 clinicians in this Medicare group
Tucson, AZ 85745
- Reassigned Medicare billing, Arizona enrollment
- 66 clinicians in this Medicare group
Las Cruces, NM 88011
- Reassigned Medicare billing, New Mexico enrollment
- 69 clinicians in this Medicare group
Sweetwater, TX 79556
- Reassigned Medicare billing, Texas enrollment
- 671 clinicians in this Medicare group
Dallas, TX 75231
- Reassigned Medicare billing, Texas enrollment
- 1,208 clinicians in this Medicare group
Dallas, TX 75201
- Reassigned Medicare billing, Oregon enrollment
- Medicare enrollment name: Access Telecare California PC
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Wellstar Spalding Medical Center
Acute Care Hospitals · Griffin, GAPiedmont Macon North Hospital
Acute Care Hospitals · Macon, GAHancock Regional Hospital
Acute Care Hospitals · Greenfield, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97239 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.
PORTLAND, OR 97239
PORTLAND, OR 97239
PORTLAND, OR 97239
PORTLAND, OR 97239
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 Timothy Fernstrom's NPI number?
The NPI number for Timothy Fernstrom is 1457552168. It was assigned to this individual provider in the NPPES registry on May 30, 2007.
Where is Timothy Fernstrom located?
Timothy Fernstrom practices at 3181 SW Sam Jackson Park Rd, Portland, OR 97239. The listed phone number is (503) 494-9000.
What is Timothy Fernstrom's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Timothy Fernstrom enrolled in Medicare?
Yes. Timothy Fernstrom 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 Timothy Fernstrom's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Fernstrom reassigns Medicare benefits to 22 organizations: Legacy Clinics LLC (Portland, OR), Hospitalist Medicine Physicians Of Idaho-Tcg, PLLC (Lewiston, ID), Sound Physicians Intensivists Of Washington PLLC (Spokane, WA), Hospitalist Medicine Physicians Of Montana - Missoula PC (Missoula, MT), Inpatient Specialists Of California, PC (San Bernardino, CA) and 17 more organizations, 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 Timothy Fernstrom's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Timothy Fernstrom accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 3 other insurers list Timothy Fernstrom 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.
Is Timothy Fernstrom affiliated with any hospitals?
According to CMS data, Timothy Fernstrom is affiliated with Wellstar Spalding Medical Center, Piedmont Macon North Hospital and Hancock Regional Hospital.
When was this NPI record last updated?
The NPPES record for Timothy Fernstrom was last updated on June 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Dr. Timothy John Fernstrom, D.O. · NPI 1457552168
Internal Medicine physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since May 30, 2007.
## Identity
- **NPI:** 1457552168 (Entity type: Individual)
- **Enumerated:** May 30, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** DO26647 (Oregon)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3181 SW SAM JACKSON PARK RD, Portland, OR 97239-3011
- **Phone:** (503) 494-9000
## 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:** 22 organizations under Medicare reassignment (form CMS-855R): Legacy Clinics LLC (NPI 1902827272, Portland, OR); Hospitalist Medicine Physicians Of Idaho-Tcg, PLLC (NPI 1104305648, Lewiston, ID); Sound Physicians Intensivists Of Washington PLLC (NPI 1528582699, Spokane, WA); Hospitalist Medicine Physicians Of Montana - Missoula PC (NPI 1841925203, Missoula, MT); Inpatient Specialists Of California, PC (NPI 1952792475, San Bernardino, CA); and 17 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of New England, College Of Osteo Medicine, class of 2004
## Record status
- **NPPES last updated:** June 18, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1457552168) · Data from the CMS NPPES public registry.