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DR. JOHN OPPENHEIMER MD
NPI 1922071513
Internal Medicine in Portland, OR

Active since February 13, 2006PECOS Enrolled
1130 NW 22ND AVE #220, LEGACY CLINIC NORTHWEST, PORTLAND, OR 97210(503) 413-8988(503) 274-4815 Get Directions Write a Review

NPPES record last updated: February 24, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. John Oppenheimer Md NPPES

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

DR. JOHN OPPENHEIMER MD (NPI 1922071513) is an individual internal medicine provider in Portland, Oregon, licensed in Illinois (036058549) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922071513
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JOHN OPPENHEIMERCredential: MD
Location Address1130 NW 22ND AVE #220, LEGACY CLINIC NORTHWESTPortland, OR 97210-3025
Mailing Address1130 Nw 22nd Ave #220, Legacy Clinic NorthwestPortland, OR 97210-3025 · (503) 413-8988 · Fax (503) 274-4815
Phone(503) 413-8988
Fax(503) 274-4815
Sole ProprietorNo
Enumeration DateFebruary 13, 2006
Last NPPES UpdateFebruary 24, 2011
✔ NPI 1922071513 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036058549
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.

Other Identifiers 12

Other98999Bcwellmark 7th St
Medicare UPIND13970
Medicaid1571232IA
Other98986Bcwellmark West
OtherIL0182John Deere
Medicaid036058549002IL
Medicaid8497364WA
Medicare PIN135236OR
Medicaid0571232IA
Medicare PIN135235OR
Other143442Ihs
Medicaid273137OR

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John Oppenheimer Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show John Oppenheimer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Legacy Clinics LLC
Rural Health
36860 INDUSTRIAL WAY
Sandy, OR 97055
  • Reassigned Medicare billing, Oregon enrollment
  • 1,248 clinicians in this Medicare group
NPI 1730472192 (503) 826-0206

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97210 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.

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 John Oppenheimer's NPI number?

The NPI number for John Oppenheimer is 1922071513. It was assigned to this individual provider in the NPPES registry on February 13, 2006.

Where is John Oppenheimer located?

John Oppenheimer practices at 1130 NW 22nd Ave #220 Legacy Clinic Northwest, Portland, OR 97210. The listed phone number is (503) 413-8988.

What is John Oppenheimer's specialty?

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

Is John Oppenheimer enrolled in Medicare?

Yes. John Oppenheimer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Oppenheimer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Oppenheimer reassigns Medicare benefits to Legacy Clinics LLC (Sandy, OR). 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 John Oppenheimer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for John Oppenheimer was last updated on February 24, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.