DR. ALEXANDER R GUIMARAES MD PHD
NPI 1194791764
Radiology - Diagnostic Radiology in Portland, OR

Q: What is Alexander Guimaraes's NPI number?

The NPI number for Alexander Guimaraes is 1194791764. It was assigned to this individual provider in the NPPES registry on February 24, 2006.

Q: What is Alexander Guimaraes's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Active since February 24, 2006PECOS EnrolledAccepts Medicare Assignment

97.83/100

CMS Quality Rating

3181 SW SAM JACKSON PARK RD, PORTLAND, OR 97239(503) 418-0990 Get Directions Write a Review

NPPES record last updated: September 15, 2014. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Alexander R Guimaraes Md Phd NPPES

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

DR. ALEXANDER R GUIMARAES MD PHD (NPI 1194791764) is an individual diagnostic radiology provider in Portland, Oregon, licensed in Oregon (167635) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Ohsu Hospital And Clinics, and is a graduate of Harvard Medical School (1999).

NPPES Registry Identity

NPI1194791764

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. ALEXANDER R GUIMARAESCredential: MD PHD

Location Address3181 SW SAM JACKSON PARK RDPortland, OR 97239-3011

Mailing Address3181 Sw Sam Jackson Park RdPortland, OR 97239-3011 · (503) 418-0990

Phone(503) 418-0990

Sole ProprietorNo

Medical School CMSHarvard Medical SchoolGraduated 1999

Enumeration DateFebruary 24, 2006

Last NPPES UpdateSeptember 15, 2014

✔ NPI 1194791764 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in OR · 167635✔ Licensed in MA · 208245

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

3181 SW SAM JACKSON PARK RD, Portland, OR 97239

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Other Identifiers 5

Medicare UPINI09293

Medicare ID-Type UnspecifiedA36999MA

Medicaid2039681MA

OtherJ27265MA · Bcbs Ma

Other466509MA · Tufts Health Plan

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Alexander R Guimaraes Md Phd 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 ID3577533413

PECOS Enrollment IDI20140811000518

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.

Areas of Expertise CMS Part B claims 19

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.

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

136 services133 patients

Ct scan of chest with contrast 71260

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

61 services59 patients

Limited ultrasound scan of abdomen 76705

A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.

50 services50 patients

Complete ultrasound scan behind abdominal cavity 76770

A complete ultrasound scan behind the abdominal cavity is a non-invasive imaging procedure. It uses sound waves to create pictures of the structures and organs located at the back of your abdomen. It helps in diagnosing health conditions and monitoring ongoing treatments.

42 services42 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

41 services34 patients

Ultrasound scan of head and neck soft tissue 76536

An ultrasound scan of the head and neck soft tissue is a non-invasive procedure that uses sound waves to create images of the soft tissues in these areas. It helps identify any abnormalities or issues, such as tumors, cysts, or infections. It's painless and doesn't involve radiation.

38 services38 patients

Ct scan of abdomen and pelvis before and after contrast 74178

A CT scan of your abdomen and pelvis with and without contrast helps visualize your internal organs better. Contrast is a special dye that improves the clarity of the images. It's taken orally or injected into your veins before the scan. The process is painless and quick.

30 services28 patients

Complete ultrasound scan of abdomen 76700

A complete ultrasound scan of the abdomen is a non-invasive imaging procedure. It uses sound waves to produce images of the organs in your abdomen, such as the liver, gallbladder, spleen, pancreas, and kidneys. It helps in diagnosing, monitoring, and planning treatments.

23 services23 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

21 services21 patients

Mri scan of abdomen before and after contrast 74183

An MRI scan of the abdomen before and after contrast provides detailed images of your abdominal organs. Initially, images are taken without a contrast agent. Then, a safe dye is administered, usually via an IV, to highlight certain areas, giving a clearer picture to help diagnose various conditions.

17 services17 patients

Complete ultrasound of abdomen and pelvis artery and vein blood flow 93975

This procedure uses sound waves to create images of your abdomen and pelvis, specifically focusing on the arteries and veins. It helps in assessing the blood flow and detecting any abnormalities, ensuring your overall well-being.

17 services17 patients

Mri scan of abdomen with contrast 74182

An MRI scan of the abdomen with contrast is a non-invasive imaging procedure. It involves using a magnetic field and radio waves to create detailed images of your abdominal area. The contrast dye enhances these images, helping to highlight certain conditions or abnormalities.

15 services15 patients

Needle biopsy of liver through skin 47000

A needle biopsy of the liver through skin is a procedure where a small tissue sample from your liver is collected using a thin needle. This is done to diagnose liver diseases or conditions. It involves inserting the needle through your skin and into your liver.

13 services13 patients

Imaging for evaluation of swallowing function 74230

This process, known as a swallowing study, uses imaging technology to view how food and liquid move from your mouth to your stomach. It helps identify any issues you may have swallowing, which can be crucial for determining the best treatment plan.

13 services13 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

12 services12 patients

Ct scan of blood vessels of abdomen and pelvis with contrast 74174

A CT scan of the abdomen and pelvis with contrast is a medical imaging procedure. A special dye, called contrast, is used to make blood vessels more visible. The scan produces detailed images of your abdomen and pelvis, helping doctors to diagnose conditions or plan treatments.

11 services11 patients

Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 76830

An ultrasound scan of the lower abdominal region is a safe, non-invasive procedure that uses sound waves to create images of internal structures. This helps in checking the health of reproductive organs and detecting any abnormalities. The scan is done via a small probe inserted into the body.

11 services11 patients

Complete ultrasound scan of pelvis 76856

A complete ultrasound scan of the pelvis is a safe, non-invasive imaging procedure. It uses sound waves to create pictures of your lower abdomen area, helping doctors to evaluate and diagnose any potential issues. It's painless and usually takes about 30 minutes.

11 services11 patients

Ultrasound scan of organ tissue for measuring elasticity 76981

An ultrasound scan of organ tissue measures elasticity, or flexibility. This non-invasive procedure uses sound waves to create images of the inside of your body. It helps in assessing the health of various organs by detecting changes in their stiffness or softness.

11 services11 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

Physician 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.

New Patient

$90.51 typical visit price

range $58.99 – $176.88

Typical copayment $22.62 (range $14.74 – $44.22)

Most-billed visit code 99203

Established Patient

$73.28 typical visit price

range $19.32 – $144.79

Typical copayment $18.32 (range $4.83 – $36.19)

Most-billed visit code 99213

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.

97.83/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

80.97

Promoting Interoperability

100

Improvement Activities

Leave this field empty

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

KARINA RAE ESPANA MD

Psychiatry & Neurology (Psychiatry)

3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239

Multnomah County (503) 494-8311

CLAIRE SAHLBERG RUGGERI MD

Pediatrics

3181 SW SAM JACKSON PARK RD, OHSU
PORTLAND, OR 97239

Multnomah County (503) 494-8220

KIMBERLY LAUREN IMBESI MD

Emergency Medicine

3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239

Multnomah County (503) 494-8211

ANN PERRIN

Student in an Organized Health Care Education/Training Program

3181 SW SAM JACKSON PARK RD, OHSU
PORTLAND, OR 97239

Multnomah County (503) 494-8211

KRIS KUMAR

Internal Medicine (Interventional Cardiology)

3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239

Multnomah County (503) 494-8311

SARAH POWER LCSW

Social Worker (Clinical)

3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239

Multnomah County (503) 494-0849

SHAHRZAD SHARAFI MD

Radiology (Diagnostic Radiology)

3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239

Multnomah County (503) 418-0990

JULIE MARIE MARTIN

Dietitian, Registered

3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239

Multnomah County (503) 494-5466

BRENDA BONILLA

Social Worker (Clinical)

3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239

Multnomah County (503) 494-2273

KAYLEE PURPURA

Otolaryngology (Plastic Surgery within the Head & Neck)

3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239

Multnomah County (503) 494-8510

MOLLY ANDERSON PA-C

Physician Assistant (Medical)

3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239

Multnomah County (503) 494-4910

JESSICA OSBORN

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 Alexander Guimaraes's NPI number?

The NPI number for Alexander Guimaraes is 1194791764. It was assigned to this individual provider in the NPPES registry on February 24, 2006.

Where is Alexander Guimaraes located?

Alexander Guimaraes practices at 3181 SW Sam Jackson Park Rd, Portland, OR 97239. The listed phone number is (503) 418-0990.

What is Alexander Guimaraes's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Alexander Guimaraes enrolled in Medicare?

Yes. Alexander Guimaraes 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.

Is Alexander Guimaraes affiliated with any hospitals?

According to CMS data, Alexander Guimaraes is affiliated with Ohsu Hospital And Clinics.

When was this NPI record last updated?

The NPPES record for Alexander Guimaraes was last updated on September 15, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.