What is John Caster's specialty?

John Caster (NPI 1902849854) is a Medicare-billing provider whose primary specialty is Internal Medicine in Springfield, MO.

Where does John Caster practice?

John Caster practices in Springfield, MO, based on the location reported in the CMS Medicare provider datasets for NPI 1902849854.

How much does Medicare pay John Caster?

John Caster (NPI 1902849854) received approximately $142K in total Medicare Part B payments, serving 344 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1902849854

John CasterMD

PRACTICEFERRELL DUNCAN CLINIC, INCSee all providers at this practice →

Internal MedicineSpringfield, MOI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

3,384

Unique beneficiaries

—

Total services

4,863

Distinct HCPCS

Medicare payment

$137K

Peer benchmark

Total Medicare services vs. 1,563 Internal Medicine providers in MO — top quintile (cohort median 658).

PRESCRIBING · PART D · 2024

Total Rx claims

10,741

Beneficiaries

—

Total drug cost

$799K

Distinct drugs

149

Brand share

20.3%

Top prescribed drugs

Atorvastatin Calcium591 claims

Amlodipine Besylate524 claims

Levothyroxine Sodium495 claims

Lisinopril487 claims

Omeprazole365 claims

QUALITY · MIPS · 2024

Final MIPS score

82.3

Quality

64.7

Cost

76.1

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.30%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$1K

Payment records

By payment type

Food and Beverage$1K

Top paying entities

Food and Beverage$1K

REFERRAL NETWORK

Where John Caster'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). 19 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
LESTER E COX MEDICAL CENTERS	242	1,011
FANCHER, MICHAEL	38	98
Mark Anderson Interventional Cardiology · Springfield, MO	33	143
Mark Barrett Diagnostic Radiology · Springfield, MO	29	47
Danny Penick Interventional Cardiology · Springfield, MO	27	111
ROBERTS, TRACY	23	39
HAWKINS, CALVIN	22	63
Christine Wester Diagnostic Radiology · Springfield, MO	20	64
Anthony Divito Diagnostic Radiology · Springfield, MO	17	31
Bradley Wiley Internal Medicine · Springfield, MO	15	101
James Rice Cardiology · Springfield, MO	15	99
LESTER E COX MEDICAL CENTERS	14	41

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