PROVIDER PROFILE · NPI 1770562209

John MerwinMD

AnesthesiologySaint Louis, MOI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$6K

Peer benchmark

Total Medicare services vs. 757 Anesthesiology providers in MO — above median (cohort median 187).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

84.9

Quality

68.5

Cost

72.2

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.42%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where John Merwin'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). 6 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
LUCHTEFELD, GERALD	44	189
Tshiswaka Kayembe Internal Medicine · Saint Louis, MO	25	45
Kevin Hutcheson Certified Registered Nurse Anesthetist (CRNA) · Saint Louis, MO	13	19
Kulsoom Junaid Psychiatry · Saint Louis, MO	13	27
HANDOYO, FRANS	12	25
Kumaran Chinnappan General Surgery · Saint Louis, MO	11	43

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