MARILYN SANDRA NORTON MD
NPI 1417060054
Internal Medicine - Hematology & Oncology in Chula Vista, CA

Q: What is Marilyn Norton's NPI number?

The NPI number for Marilyn Norton is 1417060054. It was assigned to this individual provider in the NPPES registry on August 17, 2006. The provider is also known as Marilyn Sandra Ortuno MD.

Q: What is Marilyn Norton'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 Marilyn Norton was last updated on July 20, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 August 17, 2006PECOS EnrolledAccepts Medicare Assignment

0/100

CMS Quality Rating

769 MEDICAL CENTER CT, SUITE 202, CHULA VISTA, CA 91911(619) 482-8430(619) 482-8005 Get Directions Write a Review

NPPES record last updated: July 20, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Marilyn Sandra Norton Md NPPES

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

MARILYN SANDRA NORTON MD (NPI 1417060054) is an individual hematology & oncology provider in Chula Vista, California, licensed in California (G70444) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (1989).

NPPES Registry Identity

NPI1417060054

Entity TypeIndividualFemale

Primary Taxonomy207RH0003X

Provider Legal NameMARILYN SANDRA NORTONCredential: MD

Location Address769 MEDICAL CENTER CT, SUITE 202Chula Vista, CA 91911-6658

Mailing Address769 Medical Center Ct, Suite 202Chula Vista, CA 91911-6658 · (619) 482-8430 · Fax (619) 482-8005

Phone(619) 482-8430

Fax(619) 482-8005

Sole ProprietorNo

Medical School CMSLoma Linda University School Of MedicineGraduated 1989

Enumeration DateAugust 17, 2006

Last NPPES UpdateJuly 20, 2012

✔ NPI 1417060054 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 · G70444

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.

769 MEDICAL CENTER CT, Chula Vista, CA 91911

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Other Names 1

Former Name (1)Marilyn Sandra Ortuno Md

Other Identifiers 2

Medicare ID-Type UnspecifiedWG70444ACA

Medicare UPINH22668CA

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

Marilyn Sandra Norton Md 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 ID8729055967

PECOS Enrollment IDI20040916000267

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 Reassignments

Medicare enrollment records show Marilyn Norton reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Marilyn S. Norton M.D., Inc.

0.1 mi

Hematology & Oncology

769 MEDICAL CENTER CT STE 202
Chula Vista, CA 91911

Reassigned Medicare billing, California enrollment
2 clinicians in this Medicare group

NPI 1326124819 (619) 482-8430

Emergency And Acute Care Medical Corporation

15 mi

Emergency Medicine

7901 FROST ST
San Diego, CA 92123

Reassigned Medicare billing, California enrollment
1,437 clinicians in this Medicare group

NPI 1437103942 (858) 939-3400

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 30

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, ferric carboxymaltose, 1 mg J1439

Ferric carboxymaltose is an iron supplement injection. It's given when your body needs more iron than you can consume through diet, like in anemia. The injection is administered by a healthcare professional into a vein.

60,750 services37 patients

Injection, darbepoetin alfa, 1 microgram (non-esrd use) J0881

Darbepoetin alfa injection is a medication used to treat anemia (low red blood cell count) often caused by chronic kidney disease or chemotherapy. It works by stimulating your body to produce more red blood cells, helping to increase your energy and well-being.

50,700 services31 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.

11,940 services37 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.

9,600 services18 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.

1,989 services493 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.

1,861 services504 patients

Injection, granisetron hydrochloride, 100 mcg J1626

Granisetron hydrochloride is an anti-nausea medication given by injection. It helps prevent nausea and vomiting often caused by cancer treatments like chemotherapy. Its dosage is measured in micrograms (mcg).

1,710 services29 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.

1,088 services439 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.

696 services122 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.

428 services54 patients

Injection, carboplatin, 50 mg J9045

Carboplatin is a chemotherapy drug used to treat various types of cancer by slowing or stopping the growth of cancer cells. The 50 mg injection is administered into a vein by a healthcare professional. Side effects may occur.

383 services12 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.

350 services77 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.

339 services59 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.

234 services36 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.

224 services34 patients

Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle 96402

This procedure involves the injection of hormone-based anti-cancer drugs under the skin or into a muscle. These medications help to slow down or stop the growth of certain types of cancer cells. The process is usually quick and can be performed in a clinic or hospital.

188 services20 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.

181 services31 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.

150 services87 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.

121 services23 patients

Injection of drug or substance into vein 96374

This procedure involves introducing a medication or substance directly into your vein using a syringe. It's a quick and efficient way to deliver treatment throughout your body. You might feel a small prick when the needle enters. It's generally safe and effective.

65 services29 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.

63 services16 patients

Infusion, normal saline solution, sterile (500 ml = 1 unit) J7040

An infusion of a normal saline solution is a common medical procedure. Sterile saline (salt water) is administered into your bloodstream via a drip. This helps to maintain fluid balance in your body, especially when you're unable to drink enough liquids.

52 services13 patients

Infusion into a vein for hydration, each additional hour 96361

This procedure involves delivering fluids directly into your vein to keep your body hydrated. It is typically done when oral hydration is insufficient. Each additional hour means more fluid is infused to ensure adequate hydration.

50 services17 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.

43 services43 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.

40 services40 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.

37 services37 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.

31 services15 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.

25 services11 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.

16 services15 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.

15 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91911 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

$184.71 typical visit price

range $62.10 – $184.71

Typical copayment $46.17 (range $15.52 – $46.17)

Most-billed visit code 99205

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

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.

0/100

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

Individually scored

Quality

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 9

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier16 claims16 services$13.97 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier16 claims16 services$59.28 avg. paid by Medicare

Capecitabine, oral, 150 mg J8520

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers15 claims472 services$0.34 avg. paid by Medicare

Capecitabine, oral, 500 mg J8521

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers33 claims1,712 services$0.72 avg. paid by Medicare

Temozolomide, oral, 5 mg J8700

Treatment-Treatment - Miscellaneous · category RX000N

2 suppliers11 claims1,510 services$0.29 avg. paid by Medicare

Breast prosthesis, mastectomy bra, without integrated breast prosthesis form, any size, any type L8000

DME-Orthotic Devices · category DF000N

3 suppliers25 claims63 services$40.37 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 9

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

RILEY NICOLE TOON PA-C

Physician Assistant

769 MEDICAL CENTER CT
CHULA VISTA, CA 91911

San Diego County (619) 482-8430

KENNETH BURTON JOHNSON MD

Internal Medicine (Hematology & Oncology)

769 MEDICAL CENTER CT, SUITE 202
CHULA VISTA, CA 91911

San Diego County (619) 482-8430

DR. RUBEN CARMONA MD

Radiology (Radiation Oncology)

769 MEDICAL CENTER CT
CHULA VISTA, CA 91911

San Diego County (619) 502-5851

MS. ANGIOLINA C. MOHI MSC,

Counselor (Mental Health)

769 MEDICAL CENTER CT
CHULA VISTA, CA 91911

San Diego County (619) 502-3204

DR. TRACY L. POLANCO M.D.

Family Medicine

769 MEDICAL CENTER CT, SUITE 303
CHULA VISTA, CA 91911

San Diego County (619) 591-9001

VALENTINA RUVALCABA FNP

Clinical Nurse Specialist (Oncology)

769 MEDICAL CENTER CT, STE 202
CHULA VISTA, CA 91911

San Diego County (619) 482-8430

JEANNETTE DEL VALLE MD, INC.

Internal Medicine

769 MEDICAL CENTER CT, SUITE 203
CHULA VISTA, CA 91911

San Diego County (619) 421-3313

DR. ANDREW R. BRUGGEMAN M.D.

Radiology (Radiation Oncology)

769 MEDICAL CENTER CT
CHULA VISTA, CA 91911

San Diego County (619) 502-5851

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 Marilyn Norton's NPI number?

The NPI number for Marilyn Norton is 1417060054. It was assigned to this individual provider in the NPPES registry on August 17, 2006. The provider is also known as Marilyn Sandra Ortuno MD.

Where is Marilyn Norton located?

Marilyn Norton practices at 769 Medical Center Ct Suite 202, Chula Vista, CA 91911. The listed phone number is (619) 482-8430.

What is Marilyn Norton's specialty?

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

Is Marilyn Norton enrolled in Medicare?

Yes. Marilyn Norton 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 organizations bill Medicare for Marilyn Norton's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marilyn Norton reassigns Medicare benefits to 2 organizations: Marilyn S. Norton M.D., Inc. (Chula Vista, CA) and Emergency And Acute Care Medical Corporation (San Diego, CA). Each 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 Marilyn Norton'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 Marilyn Norton was last updated on July 20, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.