DR. GIGI QIQI CHEN M.D.
NPI 1821073636
Internal Medicine - Hematology & Oncology in Pleasant Hill, CA

Q: What is Gigi Chen's NPI number?

The NPI number for Gigi Chen is 1821073636. It was assigned to this individual provider in the NPPES registry on December 14, 2005. The provider is also known as Dr. Gigi Chen M.D..

Q: What is Gigi Chen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Gigi Chen was last updated on August 2, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since December 14, 2005PECOS EnrolledAccepts Medicare Assignment

85.73/100

CMS Quality Rating

400 TAYLOR BLVD, SUITE 202, PLEASANT HILL, CA 94523(925) 677-5041(925) 677-5025 Get Directions Write a Review

NPPES record last updated: August 2, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Aug 2, 2021, Jan 8, 2019 (2 updates tracked since 2019).

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About Dr. Gigi Qiqi Chen M.d. NPPES

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

DR. GIGI QIQI CHEN M.D. (NPI 1821073636) is an individual hematology & oncology provider in Pleasant Hill, California, licensed in California (A84387) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS and is a graduate of Other (2002).

NPPES Registry Identity

NPI1821073636

Entity TypeIndividualFemale

Primary Taxonomy207RH0003X

Provider Legal NameDR. GIGI QIQI CHENCredential: M.D.

Location Address400 TAYLOR BLVD, SUITE 202Pleasant Hill, CA 94523-2147

Mailing Address1450 Treat Blvd # 300Walnut Creek, CA 94597-2168 · (925) 952-2828

Phone(925) 677-5041

Fax(925) 677-5025

Sole ProprietorNo

Medical School CMSOtherGraduated 2002

Enumeration DateDecember 14, 2005

Last NPPES UpdateAugust 2, 20212 updates tracked since enumeration

NPPES CertifiedAugust 2, 2021

✔ NPI 1821073636 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in CA · A84387

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

400 TAYLOR BLVD, Pleasant Hill, CA 94523

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Other Names 1

Other Name (5)Dr. Gigi Chen M.d.

Other Identifiers 1

OtherP00746202Railroad Medicare

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gigi Qiqi Chen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8527090612

PECOS Enrollment IDI20050909000476

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 29

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.

Injection, pembrolizumab, 1 mg J9271

Pembrolizumab is a medication given via injection to help your body's immune system fight certain types of cancer. It's typically administered in a hospital or clinic by a healthcare professional.

6,400 services11 patients

Injection, fosaprepitant, 1 mg J1453

Fosaprepitant is an anti-nausea medication given via injection. It's often used to prevent nausea and vomiting caused by chemotherapy. This injection blocks signals to the brain that trigger these symptoms, helping you feel better.

4,500 services12 patients

Injection, denosumab, 1 mg J0897

Denosumab 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.

4,080 services40 patients

Injection, epoetin alfa, (for non-esrd use), 1000 units J0885

Epoetin alfa is a medication injected to help your body produce more red blood cells, improving energy levels and reducing tiredness. It's often used for patients with certain types of anemia. Each injection contains 1000 units of the medicine.

3,640 services23 patients

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.

1,012 services533 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.

489 services162 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

469 services20 patients

Injection, palonosetron hcl, 25 mcg J2469

Palonosetron HCL is an injection used to prevent nausea and vomiting caused by chemotherapy. It works by blocking a natural substance (serotonin) in the body that can cause vomiting. This helps improve your comfort during cancer treatment.

400 services17 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.

246 services119 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

233 services119 patients

Injection of drug or substance under skin or into muscle 96372

This 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.

203 services75 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.

190 services98 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

187 services78 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

105 services40 patients

Injection of additional new drug or substance into vein 96375

This procedure involves introducing a new medication or substance into your bloodstream via a vein. It's typically done using a small needle. The substance can help treat various conditions or assist in diagnostic procedures. It's generally safe and monitored by professionals.

92 services25 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

88 services53 patients

Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less 96367

This procedure involves injecting fluids or medication directly into your vein. It's used for treatment, prevention, or diagnosis. An additional sequential infusion may be given within an hour if needed. This helps to ensure the medicine is distributed effectively in your body.

82 services25 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.

67 services54 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

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.

48 services48 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.

48 services48 patients

Lactate dehydrogenase (enzyme) level 83615

A Lactate Dehydrogenase level test measures the amount of this enzyme in your body. It's often done when tissue damage is suspected, as high levels can indicate issues like heart disease, lung disease, liver disease, or blood disorders. This test helps in diagnosing and monitoring these conditions.

36 services28 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

35 services19 patients

Injection, diphenhydramine hcl, up to 50 mg J1200

Diphenhydramine HCL injection is a medicine given to alleviate symptoms of allergies, colds, or hay fever. It can also help with motion sickness and certain symptoms of Parkinson's disease. Up to 50 mg may be administered depending on your condition.

34 services15 patients

Ferritin (blood protein) level 82728

A Ferritin level test measures the amount of ferritin, a protein that stores iron, in your blood. It helps determine how much iron your body is storing. If levels are low, it may indicate iron deficiency, while high levels could signify conditions like iron overload.

31 services23 patients

Immunologic analysis for detection of tumor antigen, quantitative; ca 125 86304

This test checks for CA 125, a protein often found in higher amounts in individuals with certain types of tumors. It involves analyzing a blood sample in a lab. It's a quantitative test, meaning it measures the level of CA 125 in your blood.

25 services13 patients

Irrigation of implanted venous access drug delivery device 96523

Irrigation of an implanted venous access drug delivery device is a procedure to clean or unblock the device. This device is implanted under your skin to allow easy, frequent, and long-term access to your veins for medication delivery. The process involves flushing the device with a sterile solution to ensure it works properly.

22 services18 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.

20 services12 patients

Uric acid level, blood 84550

A blood uric acid level test measures the amount of uric acid in your blood. Uric acid is a waste product that your body produces when it breaks down purines, substances found in your body and in certain foods. High levels may lead to gout or kidney stones.

19 services12 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

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.

17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94523 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$202.35 typical visit price

range $69.00 – $202.35

Typical copayment $50.58 (range $17.25 – $50.58)

Most-billed visit code 99205

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

85.73/100

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

Scored as part of a group practice

Quality

82.68

Promoting Interoperability

Improvement Activities

Cost

70.58

Reported Quality Measures

Appropriate Use of DXA Scans in Women Under 65 Years Who Do Not Meet the Risk Factor Profile for Osteoporotic Fracture

Lower rates are better for this measure.

7%42 patients

Breast Cancer Screening

82%367 patients4/55-star benchmark: 93%

Cervical Cancer Screening

60%267 patients3/55-star benchmark: 98%

Colorectal Cancer Screening

66%600 patients4/55-star benchmark: 88%

Controlling High Blood Pressure

81%420 patients4/55-star benchmark: 91%

Diabetes: Eye Exam

32%107 patients2/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

18%107 patients4/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

97%4,814 patients4/55-star benchmark: 100%

e-Prescribing

98%114 patients4/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

70%936 patients3/55-star benchmark: 100%

HIV Screening

34%512 patients3/55-star benchmark: 60%

Oncology: Medical and Radiation - Pain Intensity Quantified

94%1,093 patients4/55-star benchmark: 100%

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

50%1,254 patients3/55-star benchmark: 98%

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

84%1,033 patients4/55-star benchmark: 97%

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

Patients combinedPopulations: 92% · 861 patients

Patients screened: 93% · 861 patients

52%21 patients3/55-star benchmark: 100%

Provide Patients Electronic Access to Their Health Information

100%719 patients5/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

80%553 patients4/55-star benchmark: 91%

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.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Parenteral nutrition solution, not otherwise specified, 10 grams lipids B4185

Other-Enteral and Parenteral · category OB005N

1 supplier12 claims230 services$11.39 avg. paid by Medicare

Parenteral nutrition supply kit; premix, per day B4220

Other-Enteral and Parenteral · category OB005N

1 supplier12 claims84 services$8.12 avg. paid by Medicare

Parenteral nutrition administration kit, per day B4224

Other-Enteral and Parenteral · category OB005N

1 supplier12 claims84 services$25.35 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 20

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

JASMIN LILY ESHRAGH C.N.S.

Clinical Nurse Specialist (Oncology)

400 TAYLOR BLVD, SUITE 101
PLEASANT HILL, CA 94523

Contra Costa County (925) 825-8878

MATTHEW NELSON SIROTT M.D.

Internal Medicine (Hematology & Oncology)

400 TAYLOR BLVD, STE 202
PLEASANT HILL, CA 94523

Contra Costa County (925) 677-5041

DR. JONATHAN HARRIS HECHT M.D.

Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)

400 TAYLOR BLVD, SUITE 306
PLEASANT HILL, CA 94523

Contra Costa County (925) 691-9688

RUJUL RAKESHKUMAR DESAI MD

Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)

400 TAYLOR BLVD
PLEASANT HILL, CA 94523

Contra Costa County (718) 844-6551

CARDIOVASCULAR CONSULTANTS MEDICAL GROUP, INC.

Internal Medicine (Cardiovascular Disease)

400 TAYLOR BLVD, #101
PLEASANT HILL, CA 94523

Contra Costa County (925) 274-2860

DAVID BUFFUM R.N., N.P.

Nurse Practitioner (Gerontology)

400 TAYLOR BLVD, STE 202
PLEASANT HILL, CA 94523

Contra Costa County (925) 677-5041

DIABLO VALLEY CHILD NEUROLOGY INC

Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)

400 TAYLOR BLVD, SUITE 306
PLEASANT HILL, CA 94523

Contra Costa County (925) 691-9688

MS. DAWN MARIE SABORIT CPNP

Nurse Practitioner (Pediatrics)

400 TAYLOR BLVD, SUITE 306
PLEASANT HILL, CA 94523

Contra Costa County (925) 691-9688

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gigi Chen's NPI number?

The NPI number for Gigi Chen is 1821073636. It was assigned to this individual provider in the NPPES registry on December 14, 2005. The provider is also known as Dr. Gigi Chen M.D..

Where is Gigi Chen located?

Gigi Chen practices at 400 Taylor Blvd Suite 202, Pleasant Hill, CA 94523. The listed phone number is (925) 677-5041.

What is Gigi Chen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Gigi Chen enrolled in Medicare?

Yes. Gigi Chen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Gigi Chen was last updated on August 2, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.