NPPES file of Aug 9, 2026

Kathleen N. Stutz, DO

Surgical Oncology Physician · Loma Linda, CA

Kathleen N. Stutz, DO is a surgical oncology physician with a practice address in Loma Linda, California, and NPI 1265939557, issued on Apr 12, 2018. Check the license (California 20A22435, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1265939557
Name
Kathleen N. Stutz
Credential
DO
Primary taxonomy
Surgical Oncology Physician 2086X0206X
License numbers
20A22435 CA
PG188381 OR
Self-reported in NPPES; status is on the state search
Practice location
11370 Anderson St Ste 2100, Loma Linda, CA 92354
Phone
(909) 558-2822
Enumerated
Apr 12, 2018
Record last updated
Jan 23, 2025
Medicare enrollment
Enrolled (PECOS I20241216003652); accepts Medicare assignment
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 11370 Anderson St Ste 2100

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

  1. Sherif Aly, M.D.Surgery Physician1679014849
  2. Colin Brown, M.D.Surgery Physician1780025114
  3. Jana Castillo, NPNurse Practitioner1093418287
  4. Baishakhi Choudhury, MDOtolaryngology Physician1316174733
  5. Christina ColosimoSurgical Critical Care Physician1730549684
  6. Quy Alan Dao, PAPhysician Assistant1770192536

Verify Kathleen N. Stutz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A22435
    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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83% fewer Medicare Part D claims than the average surgical oncology physician in 2024

15 Medicare Part D claims, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Kathleen Stutz15
  2. Specialty average87

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.

Industry payments in 2024: $358.05

3 payments; by number, the most common kind was food and beverage; the largest payer was Leica Microsystems Inc. The 1,132 providers of this specialty with any payment received $4,224.74 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kathleen Stutz$358.05
  2. Specialty average$4,224.74

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

Bills Medicare through one group practice

  1. Faculty Physicians And Surgeons OF LlusmLoma Linda, CA

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

Kathleen N. Stutz among 250 surgical oncology physician records in California

Kathleen N. Stutz, DO is one of 250 surgical oncology physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 93% of them.

  • NPI issued2018 · 93% of these records are older, 6% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2018 · median 2004 among the 184 with a school on file
  • Record last updated2025 · 44% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086X0206X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Oncology Physician providers in California

There are 250 surgical oncology physician records in California.

The 8 surgical oncology physician records with the nearest ZIP codes

  1. Fabrizio Luca, M.D.Loma Linda, CA 923541902355589
  2. Raja Narayan, MD MPHLoma Linda, CA 923541174910533
  3. Michael O'Leary, MDLoma Linda, CA 923541811244312
  4. Mark Reeves, M.D.Loma Linda, CA 923541467482554
  5. Aaron Saunders, M.D.Loma Linda, CA 923541811280241
  6. Naveenraj Solomon, MDLoma Linda, CA 923541780862177
  7. Laurel GuthrieLoma Linda, CA 923501104270008
  8. Rhami KhorfanLoma Linda, CA 923501144617002

Common questions

What is Kathleen N. Stutz, DO's NPI number?

Kathleen N. Stutz, DO's National Provider Identifier (NPI) is 1265939557, issued on Apr 12, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Kathleen N. Stutz, DO located?

The NPPES record lists a practice address at 11370 Anderson St Ste 2100, Loma Linda, CA, 92354. Phone: (909) 558-2822. Providers update this record themselves, so call before visiting.

How can I verify Kathleen N. Stutz, DO's license?

NPPES lists California license number 20A22435, 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 Kathleen N. Stutz, DO prescribe under Medicare Part D?

In 2024, Kathleen N. Stutz, DO had 15 Medicare Part D claims; the average among surgical oncology physician prescribers was 87. Part D covers Medicare prescriptions only.

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.