NPPES file of Aug 9, 2026

Howard Wayne Fellows, M.D.

Hematology & Oncology Physician · Downey, CA

Howard Wayne Fellows, M.D. is a hematology & oncology physician with a practice address in Downey, California, and NPI 1659365526, issued on Sep 7, 2005. Check the license (California G88376, 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
1659365526
Name
Howard Wayne Fellows
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License numbers
G88376 CA
39213 IA
Self-reported in NPPES; status is on the state search
Practice location
11480 Brookshire Ave Ste 309, Downey, CA 90241
Phone
(562) 869-1201
Enumerated
Sep 7, 2005
Record last updated
Jul 21, 2022
Fax
(562) 869-1281
Medicaid ID
1659365526 IA
Medicare enrollment
Enrolled (PECOS I20050524000720); 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 11480 Brookshire Ave Ste 309

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

  1. Soo Chung, M.D.Hematology & Oncology Physician1245293729
  2. Andrea CuadrasAcute Care Nurse Practitioner1750984746
  3. Haydee Gonzalez Hidalgo, MDHematology & Oncology Physician1912071481
  4. Balaganesh Gopurala, MDHematology & Oncology Physician1316967854
  5. Amitabha Mazumder, M.D.Hematology & Oncology Physician1881682318
  6. Natasha Salazar, PA-CPhysician Assistant1215401674

Verify Howard Wayne Fellows in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G88376
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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23% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

671 Medicare Part D claims for 161 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 59 claims were for opioids.

  1. Howard Fellows671
  2. Specialty average877

Most prescribed

  1. Anastrozole33 claims
  2. Hydroxyurea30 claims
  3. Acyclovir29 claims
  4. Potassium Chloride27 claims
  5. Lonsurf26 claims
  6. Tamoxifen Citrate24 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.

Industry payments in 2024: $70.82

2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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. Howard Fellows$70.82
  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. Bay Area Hospital DistrictCoos Bay, OR
  2. Dignity HealthRedding, CA

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

Howard Wayne Fellows among 1,583 hematology & oncology physician records in California

Howard Wayne Fellows, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 92% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated1988 · median 2003 among the 1,124 with a school on file
  • Record last updated2022 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

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

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Richy Agajanian, M.D.Downey, CA 902411922116664
  2. Nelly Awkar Lazo, M.DDowney, CA 902411326351537
  3. Chaiyaporn Boonchalermvichian, MDDowney, CA 902411801046867
  4. Brian Chun Fang Cheng, M.D.Downey, CA 902411215315940
  5. Soo Chung, M.D.Downey, CA 902411245293729
  6. Anthony Giorgio, MDDowney, CA 902411801902721
  7. Haydee Gonzalez Hidalgo, MDDowney, CA 902411912071481
  8. Balaganesh Gopurala, MDDowney, CA 902411316967854

Common questions

What is Howard Wayne Fellows, M.D.'s NPI number?

Howard Wayne Fellows, M.D.'s National Provider Identifier (NPI) is 1659365526, issued on Sep 7, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Howard Wayne Fellows, M.D. located?

The NPPES record lists a practice address at 11480 Brookshire Ave Ste 309, Downey, CA, 90241. Phone: (562) 869-1201. Providers update this record themselves, so call before visiting.

How can I verify Howard Wayne Fellows, M.D.'s license?

NPPES lists California license number G88376, 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 Howard Wayne Fellows, M.D. prescribe under Medicare Part D?

In 2024, Howard Wayne Fellows, M.D. had 671 Medicare Part D claims for 161 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.