What is William Chapman's specialty?

William Chapman (NPI 1790703270) is a Medicare-billing provider whose primary specialty is General Surgery in Saint Louis, MO.

Where does William Chapman practice?

William Chapman practices in Saint Louis, MO, based on the location reported in the CMS Medicare provider datasets for NPI 1790703270.

How much does Medicare pay William Chapman?

William Chapman (NPI 1790703270) received approximately $90K in total Medicare Part B payments, serving 59 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1790703270

William ChapmanMD

General SurgerySaint Louis, MOI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$5K

Peer benchmark

Total Medicare services vs. 446 General Surgery providers in MO — below median (cohort median 268).

PRESCRIBING · PART D · 2024

Total Rx claims

1,169

Beneficiaries

—

Total drug cost

$108K

Distinct drugs

Brand share

34.0%

Top prescribed drugs

Sulfamethoxazole/Trimethoprim265 claims

Pantoprazole Sodium159 claims

Valganciclovir Hcl123 claims

Entecavir92 claims

Famotidine55 claims

QUALITY · MIPS · 2024

Final MIPS score

84.2

Quality

71.6

Cost

75.7

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.39%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$66

Payment records

By payment type

Food and Beverage$66

Top paying entities

Food and Beverage$66

REFERRAL NETWORK

Where William Chapman'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). 27 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Jeffrey Crippin Gastroenterology · Saint Louis, MO	47	263
Janice Semenkovich Diagnostic Radiology · Saint Louis, MO	28	97
Harvey Glazer Diagnostic Radiology · Saint Louis, MO	28	106
Sandor Kovacs Cardiology · Saint Louis, MO	28	90
Michaeline Wood Nurse Practitioner · Tampa, FL	27	71
Kathryn Fowler Diagnostic Radiology · San Diego, CA	25	68
David Gierada Diagnostic Radiology · Saint Louis, MO	24	86
Vincent Mellnick Diagnostic Radiology · Saint Louis, MO	23	57
Kevin Korenblat Gastroenterology · Saint Louis, MO	22	73
Cylen Javidan-Nejad Diagnostic Radiology · Saint Louis, MO	21	69
Nael Saad Diagnostic Radiology · Albany, NY	19	95
Sarah Matson Physician Assistant · Saint Louis, MO	18	106

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