What is William Bayer's specialty?

William Bayer (NPI 1528162898) is a Medicare-billing provider whose primary specialty is Endocrinology in Carol Stream, IL.

Where does William Bayer practice?

William Bayer practices in Carol Stream, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1528162898.

How much does Medicare pay William Bayer?

William Bayer (NPI 1528162898) received approximately $302K in total Medicare Part B payments, serving 575 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1528162898

William BayerMD

PRACTICEAUDIOLOGIC SERVICES, LTD.See all providers at this practice →

EndocrinologyCarol Stream, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,359

Unique beneficiaries

—

Total services

12,498

Distinct HCPCS

Medicare payment

$299K

Peer benchmark

Total Medicare services vs. 262 Endocrinology providers in IL — top quintile (cohort median 1,061).

PRESCRIBING · PART D · 2024

Total Rx claims

5,257

Beneficiaries

—

Total drug cost

$2.4M

Distinct drugs

Brand share

53.2%

Top prescribed drugs

Levothyroxine Sodium1,093 claims

Semaglutide565 claims

Levothyroxine Sodium372 claims

Metformin Hcl203 claims

Empagliflozin198 claims

QUALITY · MIPS · 2024

Final MIPS score

95.6

Quality

88.5

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.87%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$1K

Payment records

By payment type

Food and Beverage$1K

Top paying entities

Food and Beverage$1K

REFERRAL NETWORK

Where William Bayer'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
CENTRAL DUPAGE HOSPITAL ASSOCIATION	384	1,678
DELNOR COMMUNITY HOSPITAL	43	118
Joaquin Heng Internal Medicine · Carol Stream, IL	34	122
Robin Pastore Podiatry · Winfield, IL	30	74
John Treanor Diagnostic Radiology · Winfield, IL	28	67
Michael Tseng Diagnostic Radiology · Winfield, IL	28	80
Morlie Wang Diagnostic Radiology · Winfield, IL	23	48
EDWARD HOSPITAL	21	64
Robert Nierzwicki Cardiology · Winfield, IL	21	127
Robert Gross Diagnostic Radiology · Cincinnati, OH	20	46
Michael Nixon Diagnostic Radiology · Winfield, IL	20	102
Lee Campano Internal Medicine · Milford, MA	19	108

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