What is Grant Peterson's specialty?

Grant Peterson (NPI 1881905370) is a Medicare-billing provider whose primary specialty is Internal Medicine in Ankeny, IA.

Where does Grant Peterson practice?

Grant Peterson practices in Ankeny, IA, based on the location reported in the CMS Medicare provider datasets for NPI 1881905370.

How much does Medicare pay Grant Peterson?

Grant Peterson (NPI 1881905370) received approximately $146K in total Medicare Part B payments, serving 383 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1881905370

Grant PetersonMD

Internal MedicineAnkeny, IAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,423

Unique beneficiaries

—

Total services

2,522

Distinct HCPCS

Medicare payment

$128K

Peer benchmark

Total Medicare services vs. 418 Internal Medicine providers in IA — top quintile (cohort median 722).

PRESCRIBING · PART D · 2024

Total Rx claims

6,859

Beneficiaries

—

Total drug cost

$694K

Distinct drugs

125

Brand share

22.2%

Top prescribed drugs

Atorvastatin Calcium496 claims

Amlodipine Besylate314 claims

Levothyroxine Sodium248 claims

Losartan Potassium226 claims

Tamsulosin Hcl188 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 Grant Peterson'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). 42 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
CENTRAL IOWA HOSPITAL CORPORATION	159	621
RIZZI, JOHN	42	108
James Jacobs Diagnostic Radiology · Clive, IA	39	94
Bradley King Diagnostic Radiology · Clive, IA	39	114
Andrew Stefani Internal Medicine · Des Moines, IA	33	129
NERHEIM, PAMELA	31	96
CENTRAL IOWA HOSPITAL CORPORATION	30	117
Craig Stark Cardiology · Des Moines, IA	28	61
Ryan Mertens Pulmonary Disease · West Des Moines, IA	27	112
KELLER, PAUL	27	57
Aaron Hurlbut Diagnostic Radiology · Clive, IA	26	61
Tyler Schwiesow Internal Medicine · Des Moines, IA	25	66

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