DR. ROSS MICHAEL ONDERSMA MD
NPI 1841403110
Radiology - Diagnostic Radiology in Lynnwood, WA

NPI Status: Active since May 07, 2007

Contact Information

19020 33RD AVE W STE 210
LYNNWOOD, WA
ZIP 98036
Phone: (425) 563-1500
Fax: (425) 563-1501

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  • Individual
  • Male
  • Years of Experience 20
  • Radiology
  • Diagnostic Radiology
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled
  • Medicare Quality Reporting

About ROSS ONDERSMA

This page provides the complete NPI Profile along with additional information for Ross Ondersma, a provider established in Lynnwood, Washington with a medical specialization in Radiology, focusing in diagnostic radiology and more than 20 years of experience. The healthcare provider is registered in the NPI registry with number 1841403110 assigned on May 2007. The practitioner's primary taxonomy code is 2085R0202X with license number MD60292915 (WA). The provider is registered as an individual and his NPI record was last updated February 2026.

NPI
1841403110
Provider Name
DR. ROSS MICHAEL ONDERSMA MD
Gender
Male
Entity Type
Individual
Location Address
19020 33RD AVE W STE 210 LYNNWOOD, WA 98036
Location Phone
(425) 563-1500
Location Fax
(425) 563-1501
Mailing Address
19020 33RD AVE W STE 210 LYNNWOOD, WA 98036
Mailing Phone
(425) 563-1500
Mailing Fax
(425) 563-1501
Medical School Name
OTHER
Graduation Year
2006
Is Sole Proprietor?
No
Enumeration Date
05-07-2007
Last Update Date
02-23-2026
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Location Map

Secondary Locations

  • 203 S Western Ave
    Tonasket, WA 98855
    (509) 486-2151
  • 939 Caroline St
    Port Angeles, WA 98362
    (360) 417-7735

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

Radiology Diagnostic Radiology

Taxonomy Code
2085R0202X
Type
Allopathic & Osteopathic Physicians
License No.
MD60292915
License State
WA
Taxonomy Description
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207U00000XAllopathic & Osteopathic Physicians

Nuclear Medicine

MD60292915 (WA)
22085R0202XAllopathic & Osteopathic Physicians

Radiology
Diagnostic Radiology

01066258A (IN)
32085R0202XAllopathic & Osteopathic Physicians

Radiology
Diagnostic Radiology

4301088540 (MI)

Insurance Plans Accepted

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

  • Bronze Exp Standardized - PPO
  • Bronze Value - PPO
  • Catastrophic HSA - PPO
  • Gold Standardized - PPO
  • Gold Value - PPO
  • Silver AH - PPO
  • Silver Standardized - PPO
  • Dental Gold - PPO
  • Dental Gold Plus Vision - PPO
  • Dental Pediatric - PPO
  • Blue Cross� Preferred HMO Bronze Extra - HMO
  • Blue Cross� Preferred HMO Bronze Saver HSA - HMO
  • Blue Cross� Preferred HMO Bronze Secure - HMO
  • Blue Cross� Preferred HMO Gold - HMO
  • Blue Cross� Preferred HMO Gold Extra - HMO
  • Blue Cross� Preferred HMO Silver - HMO
  • Blue Cross� Preferred HMO Silver Extra - HMO
  • Blue Cross� Preferred HMO Silver Saver - HMO
  • Blue Cross� Preferred HMO Value - HMO
  • Blue Cross� Select HMO Bronze Extra - HMO
  • Blue Cross� Premier PPO Bronze Extra - PPO
  • Blue Cross� Premier PPO Bronze Saver HSA - PPO
  • Blue Cross� Premier PPO Bronze Secure - PPO
  • Blue Cross� Premier PPO Gold - PPO
  • Blue Cross� Premier PPO Gold Extra - PPO
  • Blue Cross� Premier PPO Silver - PPO
  • Blue Cross� Premier PPO Silver Extra - PPO
  • Blue Cross� Premier PPO Silver Saver HSA - PPO
  • Blue Cross� Premier PPO Value - PPO
  • HA Bronze Exp Standardized - POS
  • HA Bronze National - POS
  • HA Gold Premier National - POS
  • HA Gold Standardized - POS
  • HA Platinum Premier National - POS
  • HA Platinum Standardized - POS
  • HA Silver AH - POS
  • HA Silver Standardized - POS
  • 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
  • Octave Bronze Exp Standardized - POS
  • Octave Bronze Value - POS
  • Octave Gold Classic National - POS
  • Octave Gold Standardized - POS
  • Octave Silver AH - POS
  • Octave Silver Standardized - POS
  • Premera Blue Cross Alaska One Gold - PPO
  • Premera Blue Cross Preferred Bronze 5800 HSA - PPO
  • Premera Blue Cross Preferred Bronze 6350 - PPO
  • Premera Blue Cross Preferred Gold 1500 - PPO
  • Premera Blue Cross Preferred Silver 4500 - PPO
  • Premera Blue Cross Standard Bronze II - PPO
  • Premera Blue Cross Standard Gold - PPO
  • Premera Blue Cross Standard Silver - PPO
  • Premera Blue Cross Family Dental - PPO
  • Premera Blue Cross Pediatric Dental - PPO

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
2022790MEDICAID (05)WA 

Medicare Participation & PECOS Enrollment Status

Ross Ondersma 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.

Ross Ondersma 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: 8123279486

    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: I20121114000090, I20250522001275

    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.

Ct scan head or brain without contrast

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

This service was performed 61 times for 61 patients

Ct scan of abdomen and pelvis with contrast

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.

This service was performed 118 times for 118 patients

Ct scan of abdomen and pelvis with contrast

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.

This service was performed 38 times for 38 patients

Ct scan of abdomen and pelvis without contrast

A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.

This service was performed 42 times for 42 patients

Ct scan of blood vessels of chest with contrast

A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.

This service was performed 38 times for 38 patients

Ct scan of chest with contrast

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.

This service was performed 71 times for 71 patients

Ct scan of chest with contrast

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.

This service was performed 43 times for 43 patients

Ct scan of chest without contrast

A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.

This service was performed 60 times for 60 patients

Ct scan of chest without contrast

A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.

This service was performed 49 times for 49 patients

Ct scan of upper spine without contrast

A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.

This service was performed 28 times for 28 patients

Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries

Fluorodeoxyglucose F-18 FDG is a radioactive drug used in PET scans. It helps doctors see how your tissues and organs are functioning. The drug is given in a specific dose, up to 45 millicuries, depending on your body size and the type of scan.

This service was performed 97 times for 89 patients

Injection of radioactive material for x-ray identification of lymph node

This procedure involves injecting a safe radioactive substance into your body. It travels to your lymph nodes, making them visible on X-ray images. This helps in identifying any abnormal nodes for further examination. It's a standard part of many diagnostic processes.

This service was performed 28 times for 28 patients

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml

Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.

This service was performed 1,160 times for 11 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

This service was performed 154 times for 154 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

This service was performed 15 times for 15 patients

Nuclear medicine studies of kidney, blood flow, and function

Nuclear medicine studies of the kidney, blood flow, and function involve using small amounts of radioactive materials to create images of your kidneys. This helps in assessing their structure and working condition, aiding in early diagnosis and treatment planning.

This service was performed 38 times for 37 patients

Nuclear medicine study from skull base to mid-thigh with ct scan

A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.

This service was performed 463 times for 427 patients

Nuclear medicine study from skull base to mid-thigh with ct scan

A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.

This service was performed 232 times for 220 patients

Nuclear medicine study of bone and/or joint whole body

A nuclear medicine study of bone and/or joint whole body involves injecting a small amount of radioactive material into your body. This material travels to your bones and emits energy. A special camera captures this energy, creating images of your bones to help identify any abnormalities.

This service was performed 295 times for 285 patients

Nuclear medicine study of bone and/or joint whole body

A nuclear medicine study of bone and/or joint whole body involves injecting a small amount of radioactive material into your body. This material travels to your bones and emits energy. A special camera captures this energy, creating images of your bones to help identify any abnormalities.

This service was performed 18 times for 17 patients

Nuclear medicine study of bone taken at different times

A nuclear medicine bone study involves injecting a small amount of radioactive material into your body. This material collects in the bones and is detected by a special camera to create images. These images are taken at different times to track changes and help diagnose bone conditions.

This service was performed 52 times for 52 patients

Nuclear medicine study of brain with metabolic evaluation

A nuclear medicine study of the brain with metabolic evaluation involves using a safe radioactive substance and special imaging to assess brain function. It helps identify changes in brain metabolism that can indicate certain disorders.

This service was performed 11 times for 11 patients

Nuclear medicine study of kidney, blood flow, and function

A nuclear medicine study of the kidney is a diagnostic procedure. A small amount of radioactive material is injected into your body to highlight kidney function and blood flow. Images are then taken to assess how well your kidneys are working.

This service was performed 12 times for 12 patients

Nuclear medicine study of liver and bile duct system

A nuclear medicine study of the liver and bile duct system involves the use of a small amount of radioactive material to create detailed images. This helps doctors examine the liver's function and structure, and detect any abnormalities in the bile ducts.

This service was performed 52 times for 52 patients

Nuclear medicine study of liver and bile duct system with use of drugs

A nuclear medicine study of the liver and bile duct system involves injecting a safe, radioactive substance into the body. This substance helps create images of these areas on a special camera. It's often combined with drug use to improve image clarity and aid in diagnosing various conditions.

This service was performed 47 times for 47 patients

Nuclear medicine study of lung ventilation and circulation

A nuclear medicine lung ventilation and circulation study uses a safe radioactive material to create images of air and blood flow in your lungs. It helps identify issues like blood clots or lung diseases. You inhale or receive an injection of this material, and a special camera captures the images.

This service was performed 73 times for 73 patients

Nuclear medicine study of lymphatic system

A nuclear medicine study of the lymphatic system involves injecting a safe, radioactive substance into your body. This substance travels through your lymphatic system and helps create images on a special camera. These images can help doctors diagnose conditions related to your immune system.

This service was performed 30 times for 30 patients

Nuclear medicine study of parathyroid with spect

A nuclear medicine study of the parathyroid with SPECT is a diagnostic test that uses a small amount of radioactive material and a special camera to create images of your parathyroid glands. This test helps identify any abnormalities, aiding in accurate diagnosis and treatment.

This service was performed 16 times for 16 patients

Nuclear medicine study of parathyroid with spect

A nuclear medicine study of the parathyroid with SPECT is a diagnostic test that uses a small amount of radioactive material and a special camera to create images of your parathyroid glands. This test helps identify any abnormalities, aiding in accurate diagnosis and treatment.

This service was performed 13 times for 13 patients

Nuclear medicine study of parathyroid with spect and ct scan

A nuclear medicine study of the parathyroid with SPECT and CT scan is a diagnostic procedure. It uses a safe radioactive substance and imaging techniques to create detailed pictures of your parathyroid glands. These images help identify any abnormalities or diseases.

This service was performed 21 times for 21 patients

Nuclear medicine study of stomach to assess emptying

A nuclear medicine study of the stomach assesses how quickly food leaves the stomach. A safe, radioactive substance is added to a meal. The radiation emitted is tracked, creating images that show the food's progress through the stomach. It's non-invasive and painless.

This service was performed 42 times for 42 patients

Nuclear medicine study of stomach to assess emptying

A nuclear medicine study of the stomach assesses how quickly food leaves the stomach. A safe, radioactive substance is added to a meal. The radiation emitted is tracked, creating images that show the food's progress through the stomach. It's non-invasive and painless.

This service was performed 12 times for 12 patients

Nuclear medicine study of thyroid and thyroid function

A nuclear medicine study of the thyroid involves using a small amount of radioactive material to evaluate thyroid function. It helps identify issues such as overactive or underactive thyroid. The procedure is safe and provides valuable information about your thyroid health.

This service was performed 15 times for 15 patients

Nuclear medicine study to assess blood loss

A nuclear medicine study is a type of imaging test. It uses a small amount of radioactive material to help identify blood loss. This material is injected into your body and detected by a special camera, providing images of your internal structures.

This service was performed 27 times for 27 patients

Nuclear medicine study whole body with ct scan

A Nuclear Medicine Study with a CT Scan is a diagnostic procedure. It uses a small amount of radioactive substance and a CT scan to create detailed images of your body. These images help doctors diagnose, monitor, and treat various conditions.

This service was performed 53 times for 51 patients

Nuclear medicine study whole body with ct scan

A Nuclear Medicine Study with a CT Scan is a diagnostic procedure. It uses a small amount of radioactive substance and a CT scan to create detailed images of your body. These images help doctors diagnose, monitor, and treat various conditions.

This service was performed 38 times for 36 patients

Nuclear medicine study, 1 area with spect

A nuclear medicine study with SPECT involves a safe, small amount of radioactive substance to help visualize body organs. SPECT, or Single Photon Emission Computed Tomography, creates detailed 3D images. This helps doctors diagnose and monitor conditions in a specific body area.

This service was performed 35 times for 31 patients

Nuclear medicine study, 1 area with spect

A nuclear medicine study with SPECT involves a safe, small amount of radioactive substance to help visualize body organs. SPECT, or Single Photon Emission Computed Tomography, creates detailed 3D images. This helps doctors diagnose and monitor conditions in a specific body area.

This service was performed 18 times for 18 patients

Nuclear medicine study, 1 area with spect and concurrent ct scan

A nuclear medicine study with SPECT and concurrent CT scan is a special imaging test. It uses a small amount of radioactive substance and advanced imaging techniques to create detailed pictures of your internal body structures. It aids in diagnosing and tracking the progress of treatment for various diseases.

This service was performed 61 times for 61 patients

Piflufolastat f-18, diagnostic, 1 millicurie

Piflufolastat F-18 is a radioactive diagnostic agent used in PET scans. It helps visualize certain cells in your body, aiding doctors in diagnosing specific conditions. This service involves injecting 1 millicurie of the agent into your body.

This service was performed 102 times for 11 patients

Ultrasound study of arm or leg veins with compression and maneuvers

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

This service was performed 12 times for 12 patients

X-ray of abdomen, 1 view

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.

This service was performed 23 times for 23 patients

X-ray of chest, 1 view

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

This service was performed 243 times for 239 patients

X-ray of chest, 2 views

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

This service was performed 56 times for 56 patients

X-ray of chest, 2 views

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

This service was performed 21 times for 21 patients

X-ray of foot, minimum of 3 views

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

This service was performed 16 times for 16 patients

X-ray of hip, 2-3 views

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

This service was performed 18 times for 17 patients

X-ray of knee, 4 or more views

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

This service was performed 14 times for 12 patients

X-ray of lower and sacral spine, 2-3 views

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

This service was performed 12 times for 12 patients

X-ray of pelvis, 1-2 views

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

This service was performed 21 times for 21 patients

X-ray of shoulder, minimum of 2 views

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

This service was performed 20 times for 20 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $22.07 for a new patient copayment and $17.82 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 98036 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $88.29
  • Minimum New Patient Price $57.27
  • Maximum New Patient Price $172.8
  • Average New Patient Copayment $22.07
  • Minimum New Patient Copayment $14.31
  • Maximum New Patient Copayment $43.2

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $71.29
  • Minimum Established Patient Price $18.56
  • Maximum Established Patient Price $141.11
  • Average Established Patient Copayment $17.82
  • Minimum Established Patient Copayment $4.64
  • Maximum Established Patient Copayment $35.27

* 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.

Quality Reporting

The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.

Quality Measure Performance Number of Patients

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. Ross Ondersma is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
PROVIDENCE REGIONAL MEDICAL CENTER EVERETT1321 COLBY AVENUE
EVERETT, WA 98201
(425) 261-2000Acute Care Hospitals
SWEDISH EDMONDS HOSPITAL21601 76TH AVENUE WEST
EDMONDS, WA 98026
(425) 640-4000Acute Care Hospitals
SWEDISH MEDICAL CENTER747 BROADWAY
SEATTLE, WA 98122
(206) 386-6000Acute Care Hospitals
OLYMPIC MEDICAL CENTER939 CAROLINE ST
PORT ANGELES, WA 98362
(360) 417-7000Acute Care 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 1841403110, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 8 + 1 + 8 + 0 + 6 + 1 + 2 + 24 = 60

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

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

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1841403110.

Other Providers at the Same Location


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

Radiology (Body Imaging)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Neuroradiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Nurse Practitioner (Acute Care)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Vascular & Interventional Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Vascular & Interventional Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Physician Assistant (Medical)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036
Radiology (Diagnostic Radiology)
19020 33RD AVE W STE 210
LYNNWOOD, WA 98036

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1841403110, enumerated as an "individual" on May 07, 2007.

The provider is located at 19020 33RD AVE W STE 210 LYNNWOOD, WA 98036 and the phone number is (425) 563-1500.

Radiology with taxonomy code 2085R0202X and a focus in Diagnostic Radiology.

The provider might be accepting Accepts: Arkansas Blue Cross and Blue Shield, Blue Care. Please consult your insurance carrier or call the provider to verify.

Ross Ondersma is affiliated with: PROVIDENCE REGIONAL MEDICAL CENTER EVERETT, SWEDISH EDMONDS HOSPITAL, SWEDISH MEDICAL CENTER and OLYMPIC MEDICAL CENTER.