MERRILL K SHUM M.D.
NPI 1982819702
Internal Medicine - Hematology & Oncology in Whittier, CA

Q: What is Merrill Shum's NPI number?

The NPI number for Merrill Shum is 1982819702. It was assigned to this individual provider in the NPPES registry on May 14, 2007.

Q: What is Merrill Shum'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 Merrill Shum was last updated on August 19, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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 May 14, 2007PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

8135 PAINTER AVE, SUITE 103, WHITTIER, CA 90602(562) 698-6888(562) 698-5855 Get Directions Write a Review

NPPES record last updated: August 19, 2019. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 19, 2019, Nov 19, 2018 (2 updates tracked since 2018).

On this page

About Merrill K Shum M.d. NPPES

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

MERRILL K SHUM M.D. (NPI 1982819702) is an individual hematology & oncology provider in Whittier, California, licensed in California (A98845) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in Tucson, and is a graduate of Other (2000).

NPPES Registry Identity

NPI1982819702

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameMERRILL K SHUMCredential: M.D.

Location Address8135 PAINTER AVE, SUITE 103Whittier, CA 90602-3158

Mailing Address18000 Studebaker Rd Ste 800Cerritos, CA 90703-2671 · (562) 735-3226 · Fax (562) 869-1281

Phone(562) 698-6888

Fax(562) 698-5855

Sole ProprietorNo

Medical School CMSOtherGraduated 2000

Enumeration DateMay 14, 2007

Last NPPES UpdateAugust 19, 20192 updates tracked since enumeration

✔ NPI 1982819702 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

Licenses✔ Licensed in CA · A98845✔ Licensed in PA · MD428611

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.

8135 PAINTER AVE, Whittier, CA 90602

Open in Google Maps ↗

Secondary Practice Location 1

Location 11701 W Saint Marys Rd Ste 100Tucson, AZ 85745-2621 · Phone (520) 276-2270 · Fax (520) 585-5827

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

Merrill K Shum 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 ID3274634878

PECOS Enrollment IDI20111220000216

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 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.

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.

9,030 services41 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.

4,380 services11 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.

3,545 services245 patients

Injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units Q5106

Epoetin alfa-epbx (Retacrit) is a biosimilar injection used for non-ESRD (End-Stage Renal Disease). It helps your body make more red blood cells, increasing your energy and well-being. It's usually given under the skin or into a vein by a healthcare professional.

3,340 services18 patients

Injection, heparin sodium, (heparin lock flush), per 10 units J1642

Heparin sodium injection, often referred to as a heparin lock flush, is a procedure used to prevent blood clots in the veins. It involves injecting a small amount of heparin, a blood-thinning medication, into an intravenous (IV) line to keep it open and prevent blockages.

2,550 services16 patients

Injection, ferric derisomaltose, 10 mg J1437

Ferric derisomaltose is an iron replacement product. It's given as an injection to treat iron deficiency anemia, a condition where the body lacks enough iron. The injection helps increase iron in your body to healthy levels.

2,500 services19 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.

2,308 services17 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.

975 services229 patients

Injection, ondansetron hydrochloride, per 1 mg J2405

Ondansetron hydrochloride is a medication given via injection to help prevent nausea and vomiting, often due to chemotherapy or surgery. It works by blocking certain chemicals in the body that trigger these symptoms.

920 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.

643 services61 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.

603 services257 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.

425 services123 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.

422 services264 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.

277 services25 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.

216 services29 patients

Administration of chemotherapy into vein, each additional hour 96415

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. The drugs are administered into a vein, usually in the arm. Each additional hour of chemotherapy allows for more of the medication to enter your bloodstream to fight against the cancer cells.

138 services17 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.

98 services88 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.

97 services19 patients

Administration of additional new drug or substance into vein, 1 hour or less 96417

This procedure involves introducing a new drug or substance into your vein, typically via an IV drip. It lasts for an hour or less. This method allows the substance to quickly reach your bloodstream, ensuring rapid and effective treatment.

93 services16 patients

Unclassified drugs J3490

Unclassified drugs are medications that don't fit into an existing category or class due to their unique properties or uses. They may be used for various conditions and their effects may differ widely. Always ask your healthcare provider for more information about these drugs.

90 services16 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.

87 services31 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.

85 services25 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.

81 services81 patients

Infusion, normal saline solution , 1000 cc J7030

An infusion of normal saline solution, 1000 cc, is a common medical procedure. It involves introducing a saltwater solution into your bloodstream via an intravenous (IV) line. This helps to hydrate your body, correct electrolyte imbalances, and deliver medications if needed.

60 services11 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

51 services11 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.

42 services11 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.

27 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90602 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.

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.

100/100

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

Scored as part of a group practice

Quality

Promoting Interoperability

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 4

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

Capecitabine, oral, 150 mg J8520

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier17 claims924 services$0.31 avg. paid by Medicare

Capecitabine, oral, 500 mg J8521

Treatment-Treatment - Miscellaneous · category RX029N

2 suppliers45 claims2,716 services$0.74 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511

Treatment-Chemotherapy · category RH012N

2 suppliers31 claims31 services$18.33 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512

Treatment-Chemotherapy · category RH012N

1 supplier28 claims31 services$12.24 avg. paid by Medicare

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

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.

YULIANA TORRES

Specialist/Technologist (Speech-Language Assistant)

8135 PAINTER AVE
WHITTIER, CA 90602

Los Angeles County (562) 698-6600

YADIRA MARLENE MARTINEZ SLPA

Specialist/Technologist (Speech-Language Assistant)

8135 PAINTER AVE, SUITE 200
WHITTIER, CA 90602

Los Angeles County (562) 698-6600

EVANGELOS ROSSOPOULOS D.D.S.

Dentist (Prosthodontics)

8135 PAINTER AVE
WHITTIER, CA 90602

Los Angeles County (562) 907-4522

SHERIF ARMANIOUS

Student in an Organized Health Care Education/Training Program

8135 PAINTER AVE, SUITE 201
WHITTIER, CA 90602

Los Angeles County (562) 698-6600

THE ONCOLOGY INSTITUTE CA, A PROFESSIONAL CORPORATION

Internal Medicine (Hematology & Oncology)

8135 PAINTER AVE, SUITE 103
WHITTIER, CA 90602

Los Angeles County (562) 698-6888

CRYSTAL CONTRERAS

Specialist/Technologist (Speech-Language Assistant)

8135 PAINTER AVE, SUITE #201
WHITTIER, CA 90602

Los Angeles County (562) 698-6600

MEGAN NOEL KILE OT

Occupational Therapist

8135 PAINTER AVE, SUITE200
WHITTIER, CA 90602

Los Angeles County (562) 698-6600

MRS. SARAH ARVISO M.A., CCC-SLP

Speech-Language Pathologist

8135 PAINTER AVE, SUITE 200
WHITTIER, CA 90602

Los Angeles County (562) 698-6600

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 Merrill Shum's NPI number?

The NPI number for Merrill Shum is 1982819702. It was assigned to this individual provider in the NPPES registry on May 14, 2007.

Where is Merrill Shum located?

Merrill Shum practices at 8135 Painter Ave Suite 103, Whittier, CA 90602. The listed phone number is (562) 698-6888.

What is Merrill Shum's specialty?

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

Is Merrill Shum enrolled in Medicare?

Yes. Merrill Shum 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 Merrill Shum was last updated on August 19, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.