DR. CURTIS W SIU MD
NPI 1386613081
Internal Medicine in Laguna Hills, CA

Q: What is Curtis Siu's NPI number?

The NPI number for Curtis Siu is 1386613081. It was assigned to this individual provider in the NPPES registry on March 15, 2006.

Q: What is Curtis Siu's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Curtis Siu was last updated on April 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 15, 2006

74.59/100

CMS Quality Rating

23521 PASEO DE VALENCIA STE 108, LAGUNA HILLS, CA 92653(949) 872-5227(949) 588-2167 Get Directions Write a Review

NPPES record last updated: April 29, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 29, 2026, Nov 29, 2025, Sep 4, 2025 (3 updates tracked since 2025).

On this page

About Dr. Curtis W Siu Md NPPES

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

DR. CURTIS W SIU MD (NPI 1386613081) is an individual internal medicine provider in Laguna Hills, California, licensed in California (A74829) and active in the NPI registry since March 2006. He is a graduate of University Of California, San Diego School Of Medicine (1999).

NPPES Registry Identity

NPI1386613081

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. CURTIS W SIUCredential: MD

Location Address23521 PASEO DE VALENCIA STE 108Laguna Hills, CA 92653-3137

Mailing Address23521 Paseo De Valencia Ste 108Laguna Hills, CA 92653-3137 · (949) 872-5227

Phone(949) 872-5227

Fax(949) 588-2167

Sole ProprietorNo

Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 1999

Enumeration DateMarch 15, 2006

Last NPPES UpdateApril 29, 20263 updates tracked since enumeration

NPPES CertifiedApril 29, 2026

✔ NPI 1386613081 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A74829

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

23521 PASEO DE VALENCIA STE 108, Laguna Hills, CA 92653

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Curtis W Siu Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4981657475

PECOS Enrollment IDI20050224000422

Areas of Expertise CMS Part B claims 27

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

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.

546 services199 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

157 services157 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

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.

145 services144 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

142 services137 patients

Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes G0446

This is a yearly, personal consultation focused on behaviors affecting heart health. It lasts 15 minutes and may cover topics like diet, exercise, and stress management. It's about learning healthy habits to protect your heart.

132 services132 patients

Annual alcohol misuse screening, 5 to 15 minutes G0442

An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.

131 services131 patients

Annual depression screening, 5 to 15 minutes G0444

An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.

130 services130 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

108 services102 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

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.

58 services50 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

53 services51 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

44 services44 patients

Blood test, lipids (cholesterol and triglycerides) 80061

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

40 services40 patients

Ldl cholesterol level 83721

The LDL cholesterol level is a test that measures the amount of low-density lipoprotein (LDL) in your blood. LDL is often referred to as 'bad cholesterol' because high levels can lead to heart disease. Regular testing helps monitor and manage your heart health.

35 services35 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

32 services32 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

32 services31 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

29 services29 patients

Blood test, thyroid stimulating hormone (tsh) 84443

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

21 services21 patients

Thyroxine (thyroid chemical), free 84439

The Thyroxine (thyroid chemical), free test is a blood test that measures the level of free T4 in your body. T4 is a hormone produced by your thyroid gland and is essential for growth and metabolism. If your T4 levels are too high or too low, it could indicate a thyroid disorder.

20 services20 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

20 services20 patients

Face-to-face behavioral counseling for obesity, 15 minutes G0447

This is a 15-minute consultation where a healthcare professional discusses your eating habits, physical activity, and goals to help manage your weight. The aim is to provide personalized strategies to promote a healthier lifestyle and combat obesity.

18 services11 patients

Cyanocobalamin (vitamin b-12) level 82607

A Cyanocobalamin (Vitamin B-12) level test is a blood test that checks the amount of Vitamin B-12 in your body. This vitamin is vital for nerve function and the creation of red blood cells. Low or high levels could indicate a potential health issue.

17 services17 patients

Folic acid level, serum 82746

A Folic Acid Level, Serum test measures the amount of folic acid, a type of B vitamin, in your blood. This vitamin is important for cell growth and development. It's crucial for your body to function well. If your levels are low, it may indicate a deficiency, which can lead to health issues.

14 services14 patients

Telephone medical discussion with physician, 11-20 minutes 99442

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.

14 services12 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

13 services13 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

13 services13 patients

Parathormone (parathyroid hormone) level 83970

The Parathormone level test measures the amount of parathyroid hormone in your blood. This hormone controls calcium and phosphorus levels in the body, which are vital for bone health. Abnormal levels may indicate issues like kidney disease or parathyroid gland disorders.

13 services13 patients

Transitional care management services for problem of high complexity 99496

Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.

13 services12 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

74.59/100

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

Individually scored

Quality

82.89

Promoting Interoperability

Improvement Activities

Cost

34.9

Reported Quality Measures

Appropriate Treatment for Upper Respiratory Infection (URI)

100%64 patients5/55-star benchmark: 100%

Breast Cancer Screening

48%96 patients3/55-star benchmark: 93%

Closing the Referral Loop: Receipt of Specialist Report

3%172 patients1/55-star benchmark: 87%

Colorectal Cancer Screening

70%191 patients4/55-star benchmark: 88%

Controlling High Blood Pressure

86%171 patients4/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

72%1,950 patients3/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

0%520 patients1/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

54%581 patients3/55-star benchmark: 98%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

7%446 patients1/55-star benchmark: 97%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

35%436 patients3/55-star benchmark: 61%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients screened: 90% · 555 patients

88%555 patients

Provide Patients Electronic Access to Their Health Information

94%314 patients4/55-star benchmark: 100%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 3% · 529 patients

Patients totalRate: 8% · 529 patients

6%529 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HOWARD COHEN D.O. C.M.D., INC.

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