DR. ELLIOT JOO MD
NPI 1033322128
Internal Medicine - Gastroenterology in Portland, OR


Quality Rating: 97.83 out of 100 score

NPI Status: Active since May 07, 2007

Contact Information

9701 SW BARNES RD STE 300
PORTLAND, OR
ZIP 97225
Phone: (503) 297-8081
Fax: (503) 292-6601

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  • Individual
  • Male
  • Years of Experience 20
  • Internal Medicine
  • Gastroenterology
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About ELLIOT JOO

This page provides the complete NPI Profile along with additional information for Elliot Joo, an internist established in Portland, Oregon with a medical specialization in Internal Medicine, focusing in gastroenterology and more than 20 years of experience. He graduated from Loma Linda University School Of Medicine in 2006. The healthcare provider is registered in the NPI registry with number 1033322128 assigned on May 2007. The practitioner's primary taxonomy code is 207RG0100X with license number MD156950 (OR). The provider is registered as an individual and his NPI record was last updated December 2025.

NPI
1033322128
Provider Name
DR. ELLIOT JOO MD
Gender
Male
Entity Type
Individual
Location Address
9701 SW BARNES RD STE 300 PORTLAND, OR 97225
Location Phone
(503) 297-8081
Location Fax
(503) 292-6601
Mailing Address
541 NE 20TH AVE STE 225 PORTLAND, OR 97232
Mailing Phone
(503) 963-2801
Mailing Fax
(503) 292-6601
Medical School Name
LOMA LINDA UNIVERSITY SCHOOL OF MEDICINE
Graduation Year
2006
Is Sole Proprietor?
No
Enumeration Date
05-07-2007
Last Update Date
12-11-2025
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An internist like Elliot Joo is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Gastroenterology

Taxonomy Code
207RG0100X
Type
Allopathic & Osteopathic Physicians
License No.
MD156950
License State
OR
Taxonomy Description
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • BridgeSpan Standard Bronze Plan - EPO
  • BridgeSpan Standard Gold Plan - EPO
  • BridgeSpan Standard Silver Plan - EPO
  • Moda Health Affinity Bronze 8000 - EPO
  • Moda Health Affinity Bronze 9000 - EPO
  • Moda Health Affinity Bronze HDHP 7500 - EPO
  • Moda Health Affinity Gold 1000 - EPO
  • Moda Health Affinity Gold 1500 - EPO
  • Moda Health Affinity Gold 250 - EPO
  • Moda Health Affinity Silver 3000 - EPO
  • Moda Health Affinity Silver 3400 - EPO
  • Moda Health Affinity Silver 4500 - EPO
  • Moda Health Affinity Silver 6000 - EPO
  • Core Bronze HSA 10600 - EPO
  • Core Bronze HSA 7500 - EPO
  • Core Bronze HSA 8300 - EPO
  • Core Gold 1500 - EPO
  • Core Gold 3000 - EPO
  • Core Silver 3500 - EPO
  • Core Silver 4500 - EPO
  • Core Silver 5000 - EPO
  • Core Silver 7500 - EPO
  • Core Standard Expanded Bronze HSA - EPO
  • Connect 1500 Gold - EPO
  • Connect 6000 Silver - EPO
  • Connect 9800 Bronze - EPO
  • HSA Qualified 7500 Bronze - Choice Network - EPO
  • HSA-E Qualified 7500 Bronze - Signature Network - EPO
  • Providence Oregon Standard Bronze Plan - Choice Network - EPO
  • Providence Oregon Standard Bronze Plan - Signature Network - EPO
  • Providence Oregon Standard Gold Plan - Choice Network - EPO
  • Providence Oregon Standard Gold Plan - Signature Network - EPO
  • Providence Oregon Standard Silver Plan - Choice Network - EPO
  • Bronze 8000 Individual Connect - EPO
  • Bronze Essential 9000 With 4 Copay No Deductible Office Visits Individual Connect - EPO
  • Bronze Essential 9000 With 4 Copay No Deductible Office Visits Legacy - EPO
  • Bronze HSA 7000 Individual Connect - EPO
  • Gold 2300 Individual Connect - EPO
  • Gold 2300 Legacy - EPO
  • Regence Standard Bronze Plan Individual Connect - EPO
  • Regence Standard Bronze Plan Legacy - EPO
  • Regence Standard Gold Plan Individual Connect - EPO
  • Regence Standard Gold Plan Legacy - EPO

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
500646438MEDICAID (05)OR 
2028722MEDICAID (05)WA 

Medicare Participation & PECOS Enrollment Status

Elliot Joo is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Elliot Joo is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 143370502

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20120822000397

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

This service was performed 37 times for 37 patients

Biopsy of large bowel using a flexible endoscope

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

This service was performed 45 times for 45 patients

Colonoscopy

A colonoscopy is a medical procedure that allows your doctor to examine your colon (the large intestine). It utilizes a thin, flexible tube with a tiny camera on the end, which is inserted through the rectum. This procedure can help identify issues such as polyps, inflammation, or early signs of cancer. It's usually recommended for people over 50 or those with specific risk factors.

This service was performed for 87 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 25 times for 23 patients

New patient office or other outpatient visit, 30-44 minutes

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

This service was performed 17 times for 17 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 54 times for 54 patients

Pathology examination of tissue using a microscope, intermediate complexity

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

This service was performed 137 times for 86 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

This service was performed 66 times for 66 patients

Upper gastrointestinal (GI) endoscopy for acid reflux

An upper GI endoscopy is a procedure to examine your esophagus and stomach using a thin, flexible tube called an endoscope. It helps diagnose conditions like acid reflux by identifying any inflammation or damage. It's generally safe, performed under sedation, and takes about 15-30 minutes.

This service was performed for 115 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $33.54 for a new patient copayment and $25.87 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 97225 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $134.16
  • Minimum New Patient Price $58.99
  • Maximum New Patient Price $176.88
  • Average New Patient Copayment $33.54
  • Minimum New Patient Copayment $14.74
  • Maximum New Patient Copayment $44.22

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $103.51
  • Minimum Established Patient Price $19.32
  • Maximum Established Patient Price $144.79
  • Average Established Patient Copayment $25.87
  • Minimum Established Patient Copayment $4.83
  • Maximum Established Patient Copayment $36.19

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Overall MIPS Quality Performance

The provider participated in CMS Quality Payment Program under the Merit-based Incentive Payment System (MIPS) and has an overall final score of 97.83, based on four performance areas: quality, improvement activities, promoting interoperability, and cost. The purpose of this information is to help people with Medicare make informed decisions and incentivize doctors and clinicians to maximize performance.

The Merit-based Incentive Payment System (MIPS) is a way providers could use to participate in CMS Quality Payment Program (QPP). The MIPS program affects clinician reimbursement for Part B covered professional services and also rewards them for improving the quality of patient care and outcomes.

  • Final Score: 97.83 out of 100

    The MIPS program evaluates providers across multiple categories with a specific weight for each category resulting a in a MIPS final score that ranges from 0 to 100 points. The MIPS Final Score determines whether providers receive a negative, neutral or positive MIPS payment adjustment.

  • Quality Score: 80.97

    The Quality category assesses providers performance on clinical practices and patient outcomes under the traditional MIPS program. The quality measures help identify the quality of healthcare processes, outcomes, and patient experiences. The Quality measure category compromises 40% providers final MPIS scores.

    There are six collection types for MIPS quality measures: Electronic Clinical Quality Measures (eCQMs), MIPS Clinical Quality Measures (CQMs), Qualified Clinical Data Registry (QCDR) Measures, Medicare Part B claims measures, CMS Web Interface measures and The Consumer Assessment of Healthcare Providers and Systems (CAHPS) for MIPS Survey.

  • Promoting Interoperability Score: 100

    The Interoperability category measures the providers ability to use technology to exchange and make use of healthcare information in a way that is less burdensome and improves outcomes. The Interoperability measure category compromises 25% providers final MPIS scores.

    The MIPS Interoperability measure focuses on the use of certified electronic health record technology (CEHRT) to improve patient access health information, the exchange of information between clinicians and pharmacies and the systematic collection, analysis, and interpretation of healthcare data.

  • Improvement Activities Score: 40

    The Improvement Activities performance category evaluates the providers participation in clinical activities that support the improvement of clinical practice, care delivery, and outcomes. Providers have the option to choose 2 to 4 activities from an inventory of over 100 improvement activities. Providers typically choose the activities that best fit their needs. The improvement activities measure category compromises 15% providers final MPIS scores.

    The Improvement measures aim to better patient engagement, patient safety and other areas of patient care. The Improvement Activities category compromises 15% of providers final MPIS scores.

  • Cost Score: N/A

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

  • Cost Score: N/A

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Elliot Joo is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
PROVIDENCE ST VINCENT MEDICAL CENTER9205 SW BARNES ROAD
PORTLAND, OR 97225
(503) 216-2213Acute Care Hospitals
PROVIDENCE PORTLAND MEDICAL CENTER4805 NE GLISAN STREET
PORTLAND, OR 97213
(503) 215-1111Acute Care Hospitals
PROVIDENCE SEASIDE HOSPITAL725 S WAHANNA ROAD
SEASIDE, OR 97138
(503) 717-7000Critical Access Hospitals

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1033322128, we treat the final digit (8) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 8).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
3
Doubled → 6
Pos 4
3
Unchanged
Pos 5
3
Doubled → 6
Pos 6
2
Unchanged
Pos 7
2
Doubled → 4
Pos 8
1
Unchanged
Pos 9
2
Doubled → 4
Check
8
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 3 → 6 3 → 6 2 → 4 2 → 4

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 0 + 6 + 3 + 6 + 2 + 4 + 1 + 4 + 24 = 52

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 52 is 60. The difference is the calculated check digit.

60 - 52 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1033322128.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Nurse Anesthetist, Certified Registered
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Nurse Anesthetist, Certified Registered
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Dietitian, Registered
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Physician Assistant
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Physician Assistant
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Dietitian, Registered
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Physician Assistant (Medical)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Nurse Practitioner (Acute Care)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Student in an Organized Health Care Education/Training Program
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Dietitian, Registered
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225
Internal Medicine (Gastroenterology)
9701 SW BARNES RD STE 300
PORTLAND, OR 97225

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1033322128, enumerated as an "individual" on May 07, 2007.

The provider is located at 9701 SW BARNES RD STE 300 PORTLAND, OR 97225 and the phone number is (503) 297-8081.

Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.

The provider might be accepting Accepts: BridgeSpan Health Company, Moda Health Plan, Inc.,. Please consult your insurance carrier or call the provider to verify.

Elliot Joo is affiliated with: PROVIDENCE ST VINCENT MEDICAL CENTER, PROVIDENCE PORTLAND MEDICAL CENTER and PROVIDENCE SEASIDE HOSPITAL.