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DR. JOHN ALFERES JR. M.D.
NPI 1679680805
Internal Medicine in Portland, OR

Active since August 24, 2006PECOS Enrolled
3550 N INTERSTATE AVE, PORTLAND, OR 97227(503) 285-9321 Get Directions Write a Review

NPPES record last updated: February 4, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. John Alferes Jr. M.d. NPPES

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

DR. JOHN ALFERES JR. M.D. (NPI 1679680805) is an individual internal medicine provider in Portland, Oregon, licensed in Oregon (OR MD13486) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1679680805
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JOHN ALFERES JR.Credential: M.D.
Location Address3550 N INTERSTATE AVEPortland, OR 97227-1196
Mailing Address3440 Sw 14th AvePortland, OR 97239-1414 · (503) 222-6696
Phone(503) 285-9321
Sole ProprietorNo
Enumeration DateAugust 24, 2006
Last NPPES UpdateFebruary 4, 2022
✔ NPI 1679680805 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 · OR MD13486
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.
3550 N INTERSTATE AVE, Portland, OR 97227
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John Alferes Jr. M.d. 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97227 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.

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.

JAMES PAUL BRYANT LCSW, CADC 3
Counselor
3550 N INTERSTATE AVE
PORTLAND, OR 97227
Multnomah County (503) 964-0000
ALISON D. ARMOUR PSYD
Psychologist (Clinical)
3550 N INTERSTATE AVE
PORTLAND, OR 97227
Multnomah County (503) 813-2000
MS. JESSICA A DUDLEY FNP
Nurse Practitioner (Family)
3550 N INTERSTATE AVE
PORTLAND, OR 97227
Multnomah County (503) 746-1575
DANAYA LEE HALL SWHNP
Nurse Practitioner
3550 N INTERSTATE AVE
PORTLAND, OR 97227
Multnomah County (800) 813-2000
MS. JANET LEE MUCKRIDGE RD LD
Dietitian, Registered
3550 N INTERSTATE AVE, NUTRITION DEPARTMENT EAST INTERSTATE
PORTLAND, OR 97227
Multnomah County (503) 286-6871
KAISER FOUNDATION HEALTH PLAN OF THE NORTHWEST
Pharmacy (Managed Care Organization Pharmacy)
3550 N INTERSTATE AVE
PORTLAND, OR 97227
Multnomah County (866) 279-6122
COURTNEY JOHNSON LCSW
Social Worker (Clinical)
3550 N INTERSTATE AVE
PORTLAND, OR 97227
Multnomah County (800) 813-2000
CHIA NENG VANG RPH
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
3550 N INTERSTATE AVE
PORTLAND, OR 97227
Multnomah County (866) 279-6122

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 Alferes's NPI number?

The NPI number for John Alferes is 1679680805. It was assigned to this individual provider in the NPPES registry on August 24, 2006.

Where is John Alferes located?

John Alferes practices at 3550 N Interstate Ave, Portland, OR 97227. The listed phone number is (503) 285-9321.

What is John Alferes's specialty?

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

Is John Alferes enrolled in Medicare?

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

When was this NPI record last updated?

The NPPES record for John Alferes was last updated on February 4, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.