What is William Shaffer's specialty?

William Shaffer (NPI 1073548459) is a Medicare-billing provider whose primary specialty is Internal Medicine in Bloomington, MN.

Where does William Shaffer practice?

William Shaffer practices in Bloomington, MN, based on the location reported in the CMS Medicare provider datasets for NPI 1073548459.

How much does Medicare pay William Shaffer?

William Shaffer (NPI 1073548459) received approximately $22K in total Medicare Part B payments, serving 147 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1073548459

William ShafferMD

PRACTICEALLINA HEALTH SYSTEMSee all providers at this practice →

Internal MedicineBloomington, MNI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

671

Unique beneficiaries

—

Total services

716

Distinct HCPCS

Medicare payment

$16K

Peer benchmark

Total Medicare services vs. 1,849 Internal Medicine providers in MN — top quintile (cohort median 405).

PRESCRIBING · PART D · 2024

Total Rx claims

3,685

Beneficiaries

—

Total drug cost

$261K

Distinct drugs

Brand share

18.6%

Top prescribed drugs

Atorvastatin Calcium402 claims

Amlodipine Besylate219 claims

Metoprolol Succinate167 claims

Levothyroxine Sodium163 claims

Omeprazole161 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where William Shaffer'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). 3 inbound referrers · 12 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
KIMPELL, RANDY	16	45
PLUNKETT, MICHAEL	16	58
Harry Fernandes Internal Medicine · Bloomington, MN	12	58

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
ALLINA HEALTH SYSTEM	132	784
ALLINA HEALTH SYSTEM	45	183
PLUNKETT, MICHAEL	34	104
KIMPELL, RANDY	17	53
Harry Fernandes Internal Medicine · Bloomington, MN	17	72
Tilok Ghose Orthopedic Surgery · Bloomington, MN	17	108
Kent Bratten Internal Medicine · Bloomington, MN	17	39
ALLINA HEALTH SYSTEM	16	71
THORNE, IRVING	13	100
Timothy Eggimann Optometry · Coon Rapids, MN	12	44
FAIRVIEW HEALTH SERVICES	11	69
WYMORE, PAMELA	11	36

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