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SOPHIA TAM M.D.
NPI 1225425085
Surgery - Trauma Surgery in Portland, OR

Active since April 20, 2015PECOS EnrolledAccepts Medicare Assignment
91.25/100
CMS Quality Rating
3181 SW SAM JACKSON PARK RD, PORTLAND, OR 97239(503) 494-5300 Get Directions Write a Review

NPPES record last updated: August 4, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 4, 2026, Dec 16, 2021, Jun 11, 2020 and 1 more (4 updates tracked since 2020).

About Sophia Tam M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SOPHIA TAM M.D. (NPI 1225425085) is an individual trauma surgery provider in Portland, Oregon, licensed in Oregon (MD224915) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS, is affiliated with Ohsu Hospital And Clinics, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1225425085
Entity TypeIndividualFemale
Primary Taxonomy2086S0127X
Provider Legal NameSOPHIA TAMCredential: M.D.
Location Address3181 SW SAM JACKSON PARK RDPortland, OR 97239-3011
Mailing Address1400 Sw 5th Ave Ste 500Portland, OR 97201-5537
Phone(503) 494-5300
Sole ProprietorNo
Medical School CMSState University Of New York Downstate Medical CenterGraduated 2015
Enumeration DateApril 20, 2015
Last NPPES UpdateAugust 4, 20264 updates tracked since enumeration
NPPES CertifiedAugust 4, 2026
✔ NPI 1225425085 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySurgery · Trauma SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0127X
License✔ Licensed in OR · MD224915
Definition
Trauma surgery is a recognized subspecialty of general surgery. Trauma surgeons are physicians who have completed a five-year general surgery residency and usually continue with a one to two year fellowship in trauma and/or surgical critical care, typically leading to additional board certification in surgical critical care. There is no trauma surgery board certification at this point. To obtain board certification in surgical critical care, a fellowship in surgical critical care or anesthesiology critical care must be completed during or after general surgery residency.
Also ListedSurgeryTaxonomy 208600000X · License MD224915 (OR), 11607558-1205 (UT)
Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License 11607558-1205 (UT), MD224915 (OR)
3181 SW SAM JACKSON PARK RD, Portland, OR 97239
Open in Google Maps ↗

Secondary Practice Locations 3

Location 130 N 1900 E Rm 3C344Salt Lake City, UT 84132-0002 · Phone (801) 585-1618
Location 22200 NE Neff Rd Ste 302Bend, OR 97701-4279 · Phone (541) 706-6915 · Fax (541) 706-6733
Location 3177 Fort Washington Ave, 7GS-313New York, NY 10032-3733 · Phone (212) 305-3038

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc., PacificSource Health Plans.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

Sophia Tam M.d. 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.

PECOS PAC ID9830436096
PECOS Enrollment IDI20250618002535
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Sophia Tam reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Professional Services
Same address
General Practice
3181 SW SAM JACKSON PARK RD
Portland, OR 97239
  • Reassigned Medicare billing, Oregon enrollment
  • 2,212 clinicians in this Medicare group
NPI 1376709535 (503) 494-8311
St. Charles Health System, Inc.
121 mi
Family Medicine
2500 NE NEFF RD
Bend, OR 97701
  • Reassigned Medicare billing, Oregon enrollment
  • 348 clinicians in this Medicare group
NPI 1023331303 (541) 382-4321

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 4

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.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
58 services26 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
38 services17 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
22 services22 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
13 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ohsu Hospital And Clinics

Acute Care Hospitals · Portland, OR
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number380009
Location3181 SW Sam Jackson Park RoadPortland, OR 97239 · Multnomah County
Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.25/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality74.92
Promoting Interoperability91.67
Improvement Activities40

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.

DONALD RICHARD SULLIVAN MD
Internal Medicine (Pulmonary Disease)
3181 SW SAM JACKSON PARK RD, UHN67
PORTLAND, OR 97239
Multnomah County (503) 494-6949
MRS. ANJALEE NIX ROWE NP
Nurse Practitioner (Acute Care)
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 494-3988
REEM HASAN MD
Internal Medicine
3181 SW SAM JACKSON PARK RD, PPV 350
PORTLAND, OR 97239
Multnomah County (503) 494-8562
DR. AMANDA D BALL PSY.D
Psychologist (Clinical)
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 494-6176
SUNSHINE WELSCH LMT
Massage Therapist
3181 SW SAM JACKSON PARK RD, 7D19
PORTLAND, OR 97239
Multnomah County (503) 494-8349
DR. ROBERT GENE MEALER M.D., PH.D.
Psychiatry & Neurology (Psychiatry)
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 494-6176
GREGORY HALL MD
Radiology (Diagnostic Radiology)
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 418-0990
DR. BURHAN AHMED MIAN MD
Student in an Organized Health Care Education/Training Program
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 494-8311

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 Sophia Tam's NPI number?

The NPI number for Sophia Tam is 1225425085. It was assigned to this individual provider in the NPPES registry on April 20, 2015.

Where is Sophia Tam located?

Sophia Tam practices at 3181 SW Sam Jackson Park Rd, Portland, OR 97239. The listed phone number is (503) 494-5300.

What is Sophia Tam's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Trauma Surgery, with taxonomy code 2086S0127X.

Is Sophia Tam enrolled in Medicare?

Yes. Sophia Tam 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 Sophia Tam's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sophia Tam reassigns Medicare benefits to 2 organizations: University Professional Services (Portland, OR) and St. Charles Health System, Inc. (Bend, OR). 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 Sophia Tam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sophia Tam accept?

Health plans from Moda Health Plan, Inc. and PacificSource Health Plans list Sophia Tam 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 Sophia Tam affiliated with any hospitals?

According to CMS data, Sophia Tam is affiliated with Ohsu Hospital And Clinics.

When was this NPI record last updated?

The NPPES record for Sophia Tam was last updated on August 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.