Doctor profile · Federal record

Dr. Jana Portnow, MD

Medical Oncology Physician (CMS: Medical Oncology) · Internal Medicine Physician · Duarte, CA

  • NPI 1679680458
  • Accepts Medicare
  • MIPS 91.9 / 100 · 2023
  • 32 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1500 Duarte RD
Duarte, CA 910103012
(626) 471-9200
fax (626) 301-8233
Mailing address
Po Box 512185
Los Angeles, CA 900510185

Credentials & registration

NPPES · NUCC
NPI registered
August 2006 — 20 yrs on file
Profile last updated
November 27, 2023
Year of graduation
1994 — 32 yrs since
Specialty taxonomy
207RX0202X — NUCC code
State license (1)
California #A80221
Medicaid
CA #00A802210

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1679680458. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
191
Distinct HCPCS
4
Medicare allowed
$27,457
HCPCS Description Services Patients Avg allowed
99215 Established patient office or other outpatient visit, 40-54 minutes 87 42 $151
99214 Established patient office or other outpatient visit, 30-39 minutes 56 41 $103
99205 New patient office or other outpatient visit, 60-74 minutes 33 33 $190
99215 Established patient office or other outpatient visit, 40-54 minutes 15 11 $151

In context: peer comparison

Among 16 peers in this city , average services per provider: 239. This provider delivers 0.8× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
80
Patients
27
Total drug cost
$2,988
Drug Type Claims Patients Total cost
Ondansetron Hcl Generic 21 16 $221
Anastrozole Generic 20 0 $354
Levetiracetam Generic 20 0 $1,797
Dexamethasone Generic 19 11 $617

Frequently asked questions

Auto-generated from federal data
What is Dr. Jana Portnow's medical specialty?
Dr. Jana Portnow practices Medical Oncology Physician in Duarte, CA.
Where does Dr. Jana Portnow practice?
Dr. Jana Portnow practices at 1500 Duarte RD, Duarte, CA 910103012. Office phone: 6264719200.
What is Dr. Jana Portnow's NPI?
Dr. Jana Portnow's National Provider Identifier (NPI) is 1679680458, issued by NPPES.
Does Dr. Jana Portnow accept Medicare assignment?
Yes. Dr. Jana Portnow accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jana Portnow commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.