Doctor profile · Federal record

Dr. Howard Fellows, M.D.

Hematology & Oncology Physician (CMS: Medical Oncology) · Specialist · Downey, CA

  • NPI 1659365526
  • Accepts Medicare
  • 38 yrs in practice
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
11480 Brookshire Ave Ste 309
Downey, CA 902415025
(562) 869-1201
fax (562) 869-1281

Credentials & registration

NPPES · NUCC
NPI registered
September 2005 — 21 yrs on file
Profile last updated
July 21, 2022
Year of graduation
1988 — 38 yrs since
Specialty taxonomy
207RH0003X — NUCC code
State licenses (2)
California #G88376 · Iowa #39213
Medicaid
IA #1659365526

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1659365526. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
598
Distinct HCPCS
4
Medicare allowed
$68,682
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 374 235 $97
99215 Established patient office or other outpatient visit, 40-54 minutes 183 86 $143
99204 New patient office or other outpatient visit, 45-59 minutes 25 25 $133
99205 New patient office or other outpatient visit, 60-74 minutes 16 16 $172

In context: peer comparison

Among 5 peers in Downey Hematology & Oncology Physician, average services per provider: 137. This provider delivers 4.4× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$71
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
AstraZeneca Pharmaceuticals Lp 1 $55.97
Celgene Corporation 1 $14.85

By nature of payment

Education
$56
Food and Beverage
$15

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
569
Patients
171
Total drug cost
$619,046
Drug Type Claims Patients Total cost
Acyclovir Generic 59 13 $1,144
Anastrozole Generic 53 17 $787
Prednisone Generic 53 14 $338
Potassium Chloride Generic 48 11 $1,123
Hydroxyurea Generic 42 14 $1,557
Prochlorperazine Maleate Generic 42 27 $631
Tamoxifen Citrate Generic 38 14 $1,605
Dexamethasone Generic 37 21 $579
Gabapentin Generic 35 0 $337
Exemestane Generic 31 0 $7,134

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Howard Fellows's medical specialty?
Dr. Howard Fellows practices Hematology & Oncology Physician in Downey, CA.
Where does Dr. Howard Fellows practice?
Dr. Howard Fellows practices at 11480 Brookshire Ave Ste 309, Downey, CA 902415025. Office phone: 5628691201.
What is Dr. Howard Fellows's NPI?
Dr. Howard Fellows's National Provider Identifier (NPI) is 1659365526, issued by NPPES.
Does Dr. Howard Fellows accept Medicare assignment?
Yes. Dr. Howard Fellows accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Howard Fellows commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.