What is Donald Kastens's specialty?

Donald Kastens (NPI 1659349801) is a Medicare-billing provider whose primary specialty is Gastroenterology in Oklahoma City, OK.

Where does Donald Kastens practice?

Donald Kastens practices in Oklahoma City, OK, based on the location reported in the CMS Medicare provider datasets for NPI 1659349801.

How much does Medicare pay Donald Kastens?

Donald Kastens (NPI 1659349801) received approximately $33K in total Medicare Part B payments, serving 227 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1659349801

Donald KastensMD

GastroenterologyOklahoma City, OKI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

304

Unique beneficiaries

—

Total services

368

Distinct HCPCS

Medicare payment

$24K

Peer benchmark

Total Medicare services vs. 106 Gastroenterology providers in OK — bottom quintile (cohort median 983).

PRESCRIBING · PART D · 2024

Total Rx claims

153

Beneficiaries

—

Total drug cost

$4K

Distinct drugs

Brand share

53.6%

Top prescribed drugs

Peg3350/Sod Sulf,bicarb,cl/Kcl50 claims

Omeprazole46 claims

Peg3350/Sod Sulf,bicarb,cl/Kcl17 claims

Peg3350/Sod Sulf,bicarb,cl/Kcl15 claims

Lubiprostone13 claims

QUALITY · MIPS · 2024

Final MIPS score

77.3

Quality

53.7

Cost

70.5

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.10%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$177

Payment records

By payment type

Food and Beverage$177

Top paying entities

Food and Beverage$177

REFERRAL NETWORK

Where Donald Kastens'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). 17 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Dan Nguyen Diagnostic Radiology · Oklahoma City, OK	47	76
Robin Olander Diagnostic Radiology · Oklahoma City, OK	38	80
Theresa Thai Diagnostic Radiology · Oklahoma City, OK	31	56
Emergency Medical Services Authority Ambulance Service Provider · Oklahoma City, OK	29	56
Justin North Diagnostic Radiology · Oklahoma City, OK	26	40
William Tierney Gastroenterology · Oklahoma City, OK	21	32
Joseph Lambert Diagnostic Radiology · Paducah, KY	21	31
Suman Wasan Cardiology · Winston Salem, NC	20	34
Jamal Saadah Emergency Medicine · Houston, TX	19	32
OKLAHOMA HEART HOSPITAL, LLC	16	37
Jennifer Hinkle Diagnostic Radiology · Oklahoma City, OK	15	23
Javid Fazili Gastroenterology · Oklahoma City, OK	12	19

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