JINSUN CHOI M.D.
NPI 1538310131
Internal Medicine - Endocrinology, Diabetes & Metabolism in North Tustin, CA
NPI Status: Active since October 01, 2008
Contact Information
12231 NEWPORT AVE
NORTH TUSTIN, CA
ZIP 92705
Phone: (949) 441-2164
Fax: (949) 441-2184
- Individual
- Female
- Internal Medicine
- Endocrinology, Diabetes & Metabolism
- PECOS Enrolled
- Opted-Out Medicare
About JINSUN CHOI
This page provides the complete NPI Profile along with additional information for Jinsun Choi, an internist established in North Tustin, California with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism . The healthcare provider is registered in the NPI registry with number 1538310131 assigned on October 2008. The practitioner's primary taxonomy code is 207RE0101X with license number A110962 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1538310131
- Provider Name
- JINSUN CHOI M.D.
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 12231 NEWPORT AVE NORTH TUSTIN, CA 92705
- Location Phone
- (949) 441-2164
- Location Fax
- (949) 441-2184
- Mailing Address
- 12231 NEWPORT AVE NORTH TUSTIN, CA 92705
- Mailing Phone
- (949) 441-2164
- Mailing Fax
- (949) 441-2184
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-01-2008
- Last Update Date
- 08-29-2025
- Code Navigator
An internist like Jinsun Choi 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.
The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Jinsun Choi opted out of Medicare effective on 05-12-2025 until 05-12-2027. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare but is permitted to order and refer services to other healthcare providers.
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 Endocrinology, Diabetes & Metabolism
- Taxonomy Code
- 207RE0101X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A110962
- License State
- CA
- Taxonomy Description
- An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Medicare Participation & PECOS Enrollment Status
Jinsun Choi 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
Opted-Out of Medicare? Yes
Opt-Out Effective Date: 05-12-2025
Opt-Out End Date: 05-12-2027
Eligible to Order and Refer? Yes
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
Provider Referred Orders for Durable Medical Equipment, Devices & Supplies
The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.
Durable Medical Equipment
DME-Other DME (DE017N)
Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips (HCPCS:A4253)
31 DME suppliers used 96 Medicare Claims 279 Services Paid
DME-Medical/Surgical Supplies (DA000N)
Lancets, per box of 100 (HCPCS:A4259)
14 DME suppliers used 30 Medicare Claims 37 Services Paid
DME-Other DME (DE017N)
External ambulatory infusion pump, insulin (HCPCS:E0784)
3 DME suppliers used 17 Medicare Claims 17 Services Paid
DME-Other DME (DE017N)
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service (HCPCS:K0553)
11 DME suppliers used 169 Medicare Claims 169 Services Paid
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.
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report
Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Established patient office or other outpatient visit, 40-54 minutes
Hemoglobin a1c level, by device for home use
Injection of drug or substance under skin or into muscle
Injection, denosumab, 1 mg
Telephone medical discussion with physician, 21-30 minutes
This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.
This service was performed 50 times for 21 patientsThis 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 18 times for 17 patientsThis 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 494 times for 279 patientsThis 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 32 times for 24 patientsA Hemoglobin A1c device for home use allows you to check your average blood sugar levels over the past 3 months. It's a simple, painless test that provides immediate results, helping you manage your diabetes more effectively.
This service was performed 24 times for 22 patientsThis procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
This service was performed 79 times for 36 patientsDenosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
This service was performed 3,120 times for 31 patientsThis service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
This service was performed 51 times for 35 patientsPhysician Visit Costs
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 92705 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $142.39
- Minimum New Patient Price $62.96
- Maximum New Patient Price $187.6
- Average New Patient Copayment $35.59
- Minimum New Patient Copayment $15.74
- Maximum New Patient Copayment $46.9
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $109.96
- Minimum Established Patient Price $20.84
- Maximum Established Patient Price $153.61
- Average Established Patient Copayment $27.49
- Minimum Established Patient Copayment $5.21
- Maximum Established Patient Copayment $38.4
* 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.
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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 1538310131, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 59 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 5 providers are registered at the same or a nearby location.
NORTH TUSTIN, CA 92705
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1538310131, enumerated as an "individual" on October 01, 2008.
The provider is located at 12231 NEWPORT AVE NORTH TUSTIN, CA 92705 and the phone number is (949) 441-2164.
Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.