What is Joanne Mortimer's specialty?

Joanne Mortimer (NPI 1558319038) is a Medicare-billing provider whose primary specialty is Medical Oncology in Duarte, CA.

Where does Joanne Mortimer practice?

Joanne Mortimer practices in Duarte, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1558319038.

How much does Medicare pay Joanne Mortimer?

Joanne Mortimer (NPI 1558319038) received approximately $69K in total Medicare Part B payments, serving 293 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1558319038

Joanne MortimerM.D.

PRACTICECITY OF HOPESee all providers at this practice →

Medical OncologyDuarte, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

379

Unique beneficiaries

—

Total services

754

Distinct HCPCS

Medicare payment

$66K

Peer benchmark

Total Medicare services vs. 268 Medical Oncology providers in CA — below median (cohort median 1,130).

PRESCRIBING · PART D · 2024

Total Rx claims

159

Beneficiaries

—

Total drug cost

$823K

Distinct drugs

Brand share

36.5%

Top prescribed drugs

Ribociclib Succinate44 claims

Anastrozole39 claims

Letrozole27 claims

Palbociclib14 claims

Zolpidem Tartrate13 claims

QUALITY · MIPS · 2024

Final MIPS score

92.8

Quality

78.5

Cost

70.4

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.75%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$25K

Payment records

By payment type

Consulting Fee$13K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$10K

Travel and Lodging$2K

Food and Beverage$469

Top paying entities

Consulting Fee$13K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$10K

Travel and Lodging$2K

Food and Beverage$469

REFERRAL NETWORK

Where Joanne Mortimer's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 10 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Jimmie Wong Diagnostic Radiology · Duarte, CA	26	62
Ko Yamada Cardiology · Los Angeles, CA	22	66
Unilab Corporation Clinical Laboratory · West Hills, CA	21	65
Julie Ressler Diagnostic Radiology · Duarte, CA	19	68
Nayana Vora Radiation Oncology · Duarte, CA	16	151
Maria Santander Hospitalist · Duarte, CA	16	75
ROTTER, ARNOLD	14	35
Courtney Vito General Surgery · Fullerton, CA	14	80
MARX, HOWARD	13	32
Alexander Jung Diagnostic Radiology · Duarte, CA	11	23

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events