1. Home
  2. Directory
  3. Oregon
  4. Portland
  5. Internal Medicine
  6. NPI Profile

STEFAN CHRISTISON
NPI 1639586191
Internal Medicine in Portland, OR

Active since July 16, 2014PECOS EnrolledAccepts Medicare Assignment
86.03/100
CMS Quality Rating
1120 NW 20TH AVE STE 110, PORTLAND, OR 97209(503) 413-5542 Get Directions Write a Review

NPPES record last updated: May 14, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 14, 2020, Jun 4, 2019, Aug 10, 2016 and 1 more (4 updates tracked since 2016).

About Stefan Christison NPPES

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

STEFAN CHRISTISON (NPI 1639586191) is an individual internal medicine provider in Portland, Oregon, licensed in Oregon (DO192630) and active in the NPI registry since July 2014. He is enrolled in Medicare PECOS, is affiliated with Legacy Emanuel Medical Center, and maintains a secondary practice location in Portland.

NPPES Registry Identity

NPI1639586191
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSTEFAN CHRISTISON
Location Address1120 NW 20TH AVE STE 110Portland, OR 97209-1591
Mailing Address1120 Nw 20th Ave Ste 110Portland, OR 97209-1591 · (503) 413-5542
Phone(503) 413-5542
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateJuly 16, 2014
Last NPPES UpdateMay 14, 20204 updates tracked since enumeration
NPPES CertifiedMay 14, 2020
✔ NPI 1639586191 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OR · DO192630
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1120 NW 20TH AVE STE 110, Portland, OR 97209
Open in Google Maps ↗

Secondary Practice Location 1

Location 12800 N Vancouver Ave, Suite 230Portland, OR 97227-1630 · Phone (503) 413-4340 · Fax (503) 413-4898

Other Identifiers 1

OtherPG177406OR · Post Graduate License Number

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

Stefan Christison 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 ID9830482355
PECOS Enrollment IDI20190621002196
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

4

Medicare enrollment records show Stefan Christison reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Legacy Clinics LLC
0.2 mi
Clinic/Center
1130 NW 22ND AVE STE 220
Portland, OR 97210
  • Reassigned Medicare billing, Oregon enrollment
  • 1,248 clinicians in this Medicare group
NPI 1902827272 (503) 413-2901
Legacy Good Samaritan Hospital And Medical Center
0.3 mi
General Acute Care Hospital
1015 NW 22ND AVE
Portland, OR 97210
  • Reassigned Medicare billing, Oregon enrollment
  • 387 clinicians in this Medicare group
NPI 1780608216 (503) 413-7711
Legacy Emanuel Hospital & Health Center
1.4 mi
General Acute Care Hospital
1225 NE 2ND AVE
Portland, OR 97232
  • Reassigned Medicare billing, Oregon enrollment
  • 719 clinicians in this Medicare group
NPI 1003367491 (503) 944-8000
Legacy Salmon Creek Hospital
13 mi
Clinic/Center
2211 NE 139TH ST
Vancouver, WA 98686
  • Reassigned Medicare billing, Washington enrollment
  • 754 clinicians in this Medicare group
NPI 1356357784 (360) 487-2878

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 5

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.

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.
138 services61 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
51 services51 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
37 services37 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
33 services20 patients
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.
16 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Legacy Emanuel Medical Center

Acute Care Hospitals · Portland, OR
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380007
Location2801 N Gantenbein AvenuePortland, OR 97227 · Multnomah County
Emergency services Birthing friendly

Legacy Good Samaritan Medical Center

Acute Care Hospitals · Portland, OR
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380017
Location1015 NW 22nd Avenue, W121Portland, OR 97210 · Multnomah County
Emergency services Birthing friendly

Good Shepherd Medical Center

Critical Access Hospitals · Hermiston, OR
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number381325
Location610 NW 11th StreetHermiston, OR 97838 · Umatilla County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97209 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.16 typical visit price
range $58.99 – $176.88
Typical copayment $33.54 (range $14.74 – $44.22)
Most-billed visit code 99204
Established Patient
$103.51 typical visit price
range $19.32 – $144.79
Typical copayment $25.87 (range $4.83 – $36.19)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

86.03/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.8
Promoting Interoperability99
Improvement Activities40
Cost74.15

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
2 suppliers12 claims12 services$41.88 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers13 claims13 services$67.71 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Stefan Christison's NPI number?

The NPI number for Stefan Christison is 1639586191. It was assigned to this individual provider in the NPPES registry on July 16, 2014.

Where is Stefan Christison located?

Stefan Christison practices at 1120 NW 20th Ave Ste 110, Portland, OR 97209. The listed phone number is (503) 413-5542.

What is Stefan Christison's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Stefan Christison enrolled in Medicare?

Yes. Stefan Christison 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 Stefan Christison's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stefan Christison reassigns Medicare benefits to 4 organizations: Legacy Clinics LLC (Portland, OR), Legacy Good Samaritan Hospital And Medical Center (Portland, OR), Legacy Emanuel Hospital & Health Center (Portland, OR) and Legacy Salmon Creek Hospital (Vancouver, WA). 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 Stefan Christison's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Stefan Christison affiliated with any hospitals?

According to CMS data, Stefan Christison is affiliated with Legacy Emanuel Medical Center, Legacy Good Samaritan Medical Center and Good Shepherd Medical Center.

When was this NPI record last updated?

The NPPES record for Stefan Christison was last updated on May 14, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.