JAMES BENJAMIN CHEN M.D.
NPI 1104210152
Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery in Mission Viejo, CA

Active since March 26, 2015PECOS EnrolledAccepts Medicare Assignment
26401 CROWN VALLEY PKWY STE 101, MISSION VIEJO, CA 92691(949) 348-4000(949) 348-7466 Get Directions Write a Review

NPPES record last updated: September 13, 2022. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Sep 13, 2022, Jul 6, 2021, Apr 23, 2021 and 2 more (5 updates tracked since 2021).

  • Individual
  • Male
  • Years of Experience 12
  • Orthopaedic Surgery
  • Adult Reconstructive Orthopaedic Surgery
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About JAMES CHEN

This page provides the complete NPI Profile along with additional information for James Chen, a provider established in Mission Viejo, California with a medical specialization in Orthopaedic Surgery, focusing in adult reconstructive orthopaedic surgery and more than 12 years of experience. He graduated from University Of California, Geffen School Of Medicine in 2015. The healthcare provider is registered in the NPI registry with number 1104210152 assigned on March 2015. The practitioner's primary taxonomy code is 207XS0114X with license number A147355 (CA). The provider is registered as an individual and his NPI record was last updated 4 years ago.

NPI
1104210152
Provider Name
JAMES BENJAMIN CHEN M.D.
Gender
Male
Entity Type
Individual
Location Address
26401 CROWN VALLEY PKWY STE 101 MISSION VIEJO, CA 92691
Location Phone
(949) 348-4000
Location Fax
(949) 348-7466
Mailing Address
26401 CROWN VALLEY PKWY STE 101 MISSION VIEJO, CA 92691
Mailing Phone
(949) 348-4000
Mailing Fax
(949) 348-7466
Medical School Name
UNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduation Year
2015
Is Sole Proprietor?
No
Enumeration Date
03-26-2015
Last Update Date
09-13-2022
Code Navigator

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

Orthopaedic Surgery Adult Reconstructive Orthopaedic Surgery

Taxonomy Code
207XS0114X
Type
Allopathic & Osteopathic Physicians
License No.
A147355
License State
CA
Taxonomy Description
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, adult reconstructive orthopaedic surgeons deal with reconstructive procedures such as joint arthroplasty (i.e., hip and knee), osteotomy, arthroscopy, soft-tissue reconstruction, and a variety of other adult reconstructive surgical procedures.

Medicare Participation & PECOS Enrollment Status

James Chen 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.

James Chen 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: 1254683550

    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: I20210315002225

    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.

Aspiration and/or injection of fluid from large joint

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

This service was performed 204 times for 150 patients

Aspiration and/or injection of fluid large joint using ultrasound guidance

This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.

This service was performed 126 times for 69 patients

Computer-assisted surgery for muscle and bone procedure

Computer-assisted surgery for muscle and bone procedures involves using a computer to aid in planning and performing surgery. This technology helps increase precision, reduce invasiveness, and improve outcomes. It's commonly used in orthopedic surgeries like joint replacements.

This service was performed 34 times for 32 patients

Computer-assisted, fluoroscopic image-guided musculoskeletal surgical navigational orthopedic operation

This is a high-tech procedure where a computer aids in navigating surgical instruments, using real-time images. It enhances precision during orthopedic operations, helping to protect surrounding tissues and improve outcomes. It's like GPS for surgery!

This service was performed 64 times for 61 patients

Emergency department visit with moderate level of medical decision making

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

This service was performed 25 times for 25 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

This service was performed 37 times for 37 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 249 times for 181 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more

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 551 times for 360 patients

Hyaluronan or derivative, trivisc, for intra-articular injection, 1 mg

Trivisc is a treatment involving injections of a substance called hyaluronan into your joint, typically the knee. This substance is similar to a natural fluid in your joints that helps cushion and lubricate them. Trivisc can help reduce pain and improve joint movement.

This service was performed 3,150 times for 30 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

This service was performed 17 times for 17 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

This service was performed 1,101 times for 160 patients

Mri scan of leg joint without contrast

An MRI scan of your leg joint is a non-invasive procedure that uses magnetic fields and radio waves to create detailed images of the structures within your leg. This helps doctors diagnose or monitor conditions without using contrast dye.

This service was performed 42 times for 37 patients

Mri scan of lower spinal canal without contrast

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

This service was performed 15 times for 15 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more

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 193 times for 193 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

This service was performed 98 times for 91 patients

Principal care management services for a single high-risk disease, first 30 minutes provided personally by qualified health care professional, per calendar month.

Principal Care Management (PCM) services are health care services focused on managing a single high-risk disease. A qualified health professional will personally provide these services for the first 30 minutes each month. This could include monitoring your condition, coordinating your care, and making necessary adjustments to your treatment plan.

This service was performed 95 times for 88 patients

Replacement of knee joint, both sides of knee

A bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.

This service was performed 60 times for 55 patients

Replacement of thigh bone and hip joint with prosthesis

This procedure, known as hip arthroplasty, involves replacing your damaged thigh bone and hip joint with artificial parts, called a prosthesis. It helps relieve pain, improve mobility, and enhance your quality of life.

This service was performed 50 times for 49 patients

Telephone medical discussion with physician, 11-20 minutes

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

This service was performed 14 times for 14 patients

X-ray of ankle, minimum of 3 views

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

This service was performed 24 times for 12 patients

X-ray of both hips, minimum of 5 views

An X-ray of both hips with a minimum of 5 views is a non-invasive imaging test. It uses a small amount of radiation to produce images of the hip joints from different angles. This aids in diagnosing conditions such as fractures, arthritis, or other hip abnormalities.

This service was performed 26 times for 26 patients

X-ray of hip, 1 view

An X-ray of the hip, 1 view, is a quick, painless test where a small amount of radiation is used to produce images of the hip joint. This helps in diagnosing conditions like arthritis or fractures. You'll be positioned so that the X-ray machine can capture the best image of your hip.

This service was performed 152 times for 84 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 163 times for 143 patients

X-ray of knee, 3 views

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

This service was performed 306 times for 192 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 327 times for 240 patients

X-ray of lower and sacral spine, minimum of 4 views

An X-ray of the lower and sacral spine involves capturing images of your lower back and tailbone area. It helps in identifying issues like fractures, arthritis, or other abnormalities. At least four different angles or 'views' are taken to get a comprehensive picture.

This service was performed 23 times for 22 patients

X-ray of lower leg, 2 views

An X-ray of the lower leg, 2 views, is a quick, painless test that produces images of the bones in your lower leg. It helps to identify fractures, infections, or diseases. Two different angles are used to provide a comprehensive view of the leg's structure.

This service was performed 14 times for 11 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 30 times for 29 patients

X-ray of pelvis, minimum of 3 views

An X-ray of the pelvis with a minimum of 3 views is a diagnostic procedure that uses radiation to create images of your lower body area. This helps in detecting issues like fractures, arthritis, or other abnormalities. It's quick, non-invasive, and typically painless.

This service was performed 25 times for 25 patients

X-ray of shoulder blade

An X-ray of the shoulder blade is a quick, painless test that produces images of the bones in your shoulder area. It helps identify fractures, infections, or other abnormalities. You'll need to stay still while a machine sends a small amount of radiation through your shoulder to capture the image.

This service was performed 41 times for 30 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 41 times for 30 patients

X-ray of thigh bone, minimum 2 views

An X-ray of the thigh bone is a non-invasive imaging test. It involves passing a small amount of radiation through the thigh to produce images of the bone structure. At least two different angles are captured for a comprehensive view. This helps detect fractures, infections, or other abnormalities.

This service was performed 37 times for 20 patients

X-ray of wrist, minimum of 3 views

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

This service was performed 24 times for 14 patients

Reviews for JAMES BENJAMIN CHEN M.D.

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

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 1104210152, we treat the final digit (2) 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 38. The final step is to find the difference between that total and the next multiple of ten (40 - 38 = 2).

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
1
Unchanged
Pos 3
0
Doubled → 0
Pos 4
4
Unchanged
Pos 5
2
Doubled → 4
Pos 6
1
Unchanged
Pos 7
0
Doubled → 0
Pos 8
1
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
2
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 0 → 0 2 → 4 0 → 0 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 0 + 4 + 4 + 1 + 0 + 1 + 1 + 0 + 24 = 38

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

The next multiple of ten after 38 is 40. The difference is the calculated check digit.

40 - 38 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1104210152.

Other Providers at the Same Location


The following 10 providers are registered at the same or a nearby location.

Physical Medicine & Rehabilitation
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691
Orthopaedic Surgery
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691
Orthopaedic Surgery (Hand Surgery)
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691
Orthopaedic Surgery
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691
Physician Assistant
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691
Orthopaedic Surgery
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691
Orthopaedic Surgery
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691
Physical Medicine & Rehabilitation (Sports Medicine)
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691
Physician Assistant
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691
Physician Assistant
26401 CROWN VALLEY PKWY STE 101
MISSION VIEJO, CA 92691

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1104210152, enumerated as an "individual" on March 26, 2015.

The provider is located at 26401 CROWN VALLEY PKWY STE 101 MISSION VIEJO, CA 92691 and the phone number is (949) 348-4000.

Orthopaedic Surgery with taxonomy code 207XS0114X and a focus in Adult Reconstructive Orthopaedic Surgery.