What is Roger Guillemette's specialty?

Roger Guillemette (NPI 1417981333) is a Medicare-billing provider whose primary specialty is Internal Medicine in Saint Louis, MO.

Where does Roger Guillemette practice?

Roger Guillemette practices in Saint Louis, MO, based on the location reported in the CMS Medicare provider datasets for NPI 1417981333.

How much does Medicare pay Roger Guillemette?

Roger Guillemette (NPI 1417981333) received approximately $103K in total Medicare Part B payments, serving 368 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1417981333

Roger GuillemetteM.D.

Internal MedicineSaint Louis, MOI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,332

Unique beneficiaries

—

Total services

1,806

Distinct HCPCS

Medicare payment

$102K

Peer benchmark

Total Medicare services vs. 1,563 Internal Medicine providers in MO — top quintile (cohort median 658).

PRESCRIBING · PART D · 2024

Total Rx claims

12,261

Beneficiaries

—

Total drug cost

$615K

Distinct drugs

150

Brand share

16.6%

Top prescribed drugs

Atorvastatin Calcium759 claims

Metoprolol Succinate566 claims

Irbesartan540 claims

Hydrochlorothiazide531 claims

Levothyroxine Sodium500 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$14

Payment records

By payment type

Food and Beverage$14

Top paying entities

Food and Beverage$14

REFERRAL NETWORK

Where Roger Guillemette'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). 8 inbound referrers · 20 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Peter Holtz Diagnostic Radiology · Chesterfield, MO	33	208
Debbie Bennett Diagnostic Radiology · Saint Louis, MO	27	104
NPI 1336241017	26	72
Kelby Napier Diagnostic Radiology · Saint Louis, MO	20	57
Thomas Spiro Internal Medicine · Saint Louis, MO	17	82
Phillip Apprill Cardiology · Saint Louis, MO	14	112
Pathgroup Labs, Llc Clinical Laboratory · Nashville, TN	11	25
Bingzhong Chen Neurology · Washington, MO	11	57

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
SSM HEALTH CARE ST. LOUIS	309	2,126
Laboratory Corporation Of America Holdings Clinical Laboratory · Dublin, OH	93	301
Labone Llc Clinical Laboratory · Lenexa, KS	76	209
Roy Auer Diagnostic Radiology · Saint Louis, MO	31	119
MISSOURI BAPTIST MEDICAL CENTER	24	47
NPI 1336241017	23	65
Peter Holtz Diagnostic Radiology · Chesterfield, MO	23	148
Thomas Spiro Internal Medicine · Saint Louis, MO	17	82
Mark Friedman Cardiology · Saint Louis, MO	16	64
Mary Lowdermilk Diagnostic Radiology · Saint Louis, MO	16	35
Madhu Kancherla Cardiology · Saint Louis, MO	16	100
BARNES JEWISH HOSPITAL	15	51

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