NPPES file of Aug 9, 2026

Marilyn Sandra Norton, MD

Hematology & Oncology Physician · Chula Vista, CA

Marilyn Sandra Norton, MD is a hematology & oncology physician with a practice address in Chula Vista, California, and NPI 1417060054, issued on Aug 17, 2006. Check the license (California G70444, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1417060054
Name
Marilyn Sandra Norton
Credential
MD
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
G70444 CA
Self-reported in NPPES; status is on the state search
Practice location
769 Medical Center CT, Chula Vista, CA 91911
Phone
(619) 482-8430
Enumerated
Aug 17, 2006
Record last updated
Jul 20, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(619) 482-8005
Medicare enrollment
Enrolled (PECOS I20040916000267); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 1989
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 769 Medical Center CT

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Andrew Bruggeman, M.D.Radiation Oncology Physician1790049591
  2. Ruben Carmona, MDRadiation Oncology Physician1275929242
  3. Kenneth Johnson, MDHematology & Oncology Physician1063527711
  4. Angiolina Mohi, MSC,Mental Health Counselor1467651547
  5. Tracy Polanco, M.D.Family Medicine Physician1538138631
  6. Valentina Ruvalcaba, FNPOncology Clinical Nurse Specialist1669830451

Verify Marilyn Sandra Norton in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G70444
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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67% more Medicare Part D claims than the average hematology & oncology physician in 2024

1,468 Medicare Part D claims for 228 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 42 claims were for opioids.

  1. Marilyn Norton1,468
  2. Specialty average877

Most prescribed

  1. Letrozole181 claims
  2. Lenalidomide69 claims
  3. Acyclovir68 claims
  4. Dexamethasone63 claims
  5. Ibrance47 claims
  6. Ondansetron Hcl47 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The MIPS final score for 2023 (Medicare payment program): 0 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $351.26

13 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marilyn Norton$351.26
  2. Specialty average$7,481.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Emergency And Acute Care Medical CorporationChula Vista, CA
  2. Marilyn S. Norton M.D., Inc.Chula Vista, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

Other hematology & oncology physician records in California

  1. Mark Abate, M.D.Santa Barbara, CA1588778674
  2. Iman Abdalla, MDLos Angeles, CA1730248311
  3. Haifaa Abdulhaq, MDFresno, CA1508024647
  4. Nihal Abdulla, MDLos Alamitos, CA1750585345
  5. Mehrad Abedi, M.D.Sacramento, CA1467459222
  6. Oyewale Abidoye, M.D.La Jolla, CA1790841815
  7. Mohammed Abu Zaanona, MDSanta Barbara, CA1922591197
  8. Mohamad Adada, M.D., PHDRoseville, CA1528590734
  9. Jesse Adams, MDSacramento, CA1851479554
  10. Thompson Adams, MDSanta Monica, CA1407880891

Common questions

What is Marilyn Sandra Norton, MD's NPI number?

Marilyn Sandra Norton, MD's National Provider Identifier (NPI) is 1417060054, issued on Aug 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Marilyn Sandra Norton, MD located?

The NPPES record lists a practice address at 769 Medical Center CT, Chula Vista, CA, 91911. Phone: (619) 482-8430. Providers update this record themselves, so call before visiting.

How can I verify Marilyn Sandra Norton, MD's license?

NPPES lists California license number G70444, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Marilyn Sandra Norton, MD prescribe under Medicare Part D?

In 2024, Marilyn Sandra Norton, MD had 1,468 Medicare Part D claims for 228 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

What is Marilyn Sandra Norton, MD's MIPS final score?

The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.