GRACE CHANG
NPI 1508144783
Internal Medicine - Hematology & Oncology in Santa Monica, CA

Q: What is Grace Chang's NPI number?

The NPI number for Grace Chang is 1508144783. It was assigned to this individual provider in the NPPES registry on July 22, 2011.

Q: What is Grace Chang'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 Grace Chang was last updated on May 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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 July 22, 2011PECOS EnrolledAccepts Medicare Assignment

2021 SANTA MONICA BLVD STE 560W, SANTA MONICA, CA 90404(310) 453-5654(310) 453-6885 Get Directions Write a Review

NPPES record last updated: May 27, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 27, 2025, Nov 30, 2021, Mar 30, 2021 and 3 more (6 updates tracked since 2019).

On this page

About Grace Chang NPPES

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

GRACE CHANG (NPI 1508144783) is an individual hematology & oncology provider in Santa Monica, California, licensed in California (A123034) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS and is a graduate of New York Medical College (2011).

NPPES Registry Identity

NPI1508144783

Entity TypeIndividualFemale

Primary Taxonomy207RH0003X

Provider Legal NameGRACE CHANG

Location Address2021 SANTA MONICA BLVD STE 560WSanta Monica, CA 90404-2208

Mailing Address1000 W Carson St # 400Torrance, CA 90502-2004

Phone(310) 453-5654

Fax(310) 453-6885

Sole ProprietorNo

Medical School CMSNew York Medical CollegeGraduated 2011

Enumeration DateJuly 22, 2011

Last NPPES UpdateMay 27, 20256 updates tracked since enumeration

NPPES CertifiedJanuary 10, 2024

✔ NPI 1508144783 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 · A123034

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.

2021 SANTA MONICA BLVD STE 560W, Santa Monica, CA 90404

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Grace Chang 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 ID3173802600

PECOS Enrollment IDI20171106003115

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.

Medicare Billing Reassignment

Medicare enrollment records show Grace Chang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group

6.0 mi

Health Maintenance Organization

6041 CADILLAC AVE
Los Angeles, CA 90034

Reassigned Medicare billing, California enrollment
13,921 clinicians in this Medicare group

NPI 1043242563 (323) 857-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 16

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, 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.

3,900 services24 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.

215 services171 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.

199 services68 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.

193 services81 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.

145 services74 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.

127 services37 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.

121 services42 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.

107 services43 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.

97 services11 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.

91 services16 patients

Injection, zoledronic acid, 1 mg J3489

Zoledronic acid is a medication given via injection to strengthen bones. It's often used in patients with osteoporosis or certain types of cancer. The injection helps reduce the risk of fractures and other bone complications.

75 services15 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.

61 services32 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.

32 services32 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

26 services21 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.

20 services19 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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90404 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

$187.60 typical visit price

range $62.96 – $187.60

Typical copayment $46.90 (range $15.74 – $46.90)

Most-billed visit code 99205

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

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.

Referred Medical Equipment & Supplies CMS DME claims 2

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

Injection, immune globulin (hizentra), 100 mg J1559

Treatment-Injections and Infusions (nononcologic) · category RI008N

1 supplier13 claims5,200 services$9.55 avg. paid by Medicare

Supplies for external non-insulin drug infusion pump, syringe type cartridge, sterile, each K0552

DME-Other DME · category DE000N

1 supplier12 claims48 services$2.37 avg. paid by Medicare

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

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 Grace Chang's NPI number?

The NPI number for Grace Chang is 1508144783. It was assigned to this individual provider in the NPPES registry on July 22, 2011.

Where is Grace Chang located?

Grace Chang practices at 2021 Santa Monica Blvd Ste 560W, Santa Monica, CA 90404. The listed phone number is (310) 453-5654.

What is Grace Chang's specialty?

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

Is Grace Chang enrolled in Medicare?

Yes. Grace Chang 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.

Which organization bills Medicare for Grace Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Grace Chang reassigns Medicare benefits to Southern California Permanente Medical Group (Los Angeles, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Grace Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Grace Chang was last updated on May 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.