What is Robert Isaak's specialty?

Robert Isaak (NPI 1619197464) is a Medicare-billing provider whose primary specialty is Radiation Oncology in Des Moines, IA.

Where does Robert Isaak practice?

Robert Isaak practices in Des Moines, IA, based on the location reported in the CMS Medicare provider datasets for NPI 1619197464.

How much does Medicare pay Robert Isaak?

Robert Isaak (NPI 1619197464) received approximately $128K in total Medicare Part B payments, serving 351 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1619197464

Robert IsaakM.D., PHARM.D.

Radiation OncologyDes Moines, IAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

941

Unique beneficiaries

—

Total services

1,915

Distinct HCPCS

Medicare payment

$123K

Peer benchmark

Total Medicare services vs. 42 Radiation Oncology providers in IA — above median (cohort median 1,772).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$441

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Tamsulosin Hcl31 claims

Memantine Hcl15 claims

QUALITY · MIPS · 2024

Final MIPS score

82.6

Quality

83.7

Cost

76.5

Improvement activities

40.0

Promoting interop.

78.0

Payment adjustment

0.32%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$228

Payment records

By payment type

Food and Beverage$228

Top paying entities

Food and Beverage$228

REFERRAL NETWORK

Where Robert Isaak'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). 29 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
CENTRAL IOWA HOSPITAL CORPORATION	292	3,382
Anne Varner Physician Assistant · Des Moines, IA	76	108
Arshin Sheybani Radiation Oncology · Des Moines, IA	42	562
CENTRAL IOWA HOSPITAL CORPORATION	37	274
Bradley King Diagnostic Radiology · Clive, IA	35	139
Matthew Hill Medical Oncology · Des Moines, IA	30	398
Robert Behrens Medical Oncology · Des Moines, IA	29	602
KELLER, PAUL	29	148
DREVYANKO, TIMOTHY	27	135
Daniel Buroker Medical Oncology · Ankeny, IA	26	752
Iowa Pathology Associates Pc Clinical Laboratory · Des Moines, IA	23	121
David Lacey Diagnostic Radiology · Clive, IA	22	220

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