What is James Lengemann's specialty?

James Lengemann (NPI 1447247572) is a Medicare-billing provider whose primary specialty is Internal Medicine in Naperville, IL.

Where does James Lengemann practice?

James Lengemann practices in Naperville, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1447247572.

How much does Medicare pay James Lengemann?

James Lengemann (NPI 1447247572) received approximately $65K in total Medicare Part B payments, serving 188 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1447247572

James LengemannMD

Internal MedicineNaperville, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

459

Unique beneficiaries

—

Total services

710

Distinct HCPCS

Medicare payment

$61K

Peer benchmark

Total Medicare services vs. 3,790 Internal Medicine providers in IL — above median (cohort median 760).

PRESCRIBING · PART D · 2024

Total Rx claims

1,893

Beneficiaries

—

Total drug cost

$128K

Distinct drugs

Brand share

8.0%

Top prescribed drugs

Atorvastatin Calcium224 claims

Amlodipine Besylate199 claims

Losartan Potassium159 claims

Levothyroxine Sodium123 claims

Metoprolol Succinate102 claims

QUALITY · MIPS · 2024

Final MIPS score

84.9

Quality

75.9

Cost

74.6

Improvement activities

40.0

Promoting interop.

99.0

Payment adjustment

0.42%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$17

Payment records

By payment type

Food and Beverage$17

Top paying entities

Food and Beverage$17

REFERRAL NETWORK

Where James Lengemann'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). 9 inbound referrers · 22 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
EDWARD HOSPITAL	219	1,367
Christina Bartz Physician Assistant · Naperville, IL	24	75
RESIDENTIAL HOME HEALTH ILLINOIS, LLC	16	44
Paul Backas Diagnostic Radiology · Naperville, IL	16	78
Alan Nazerian Diagnostic Radiology · Oak Brook, IL	16	38
Mark Ottolin Internal Medicine · Naperville, IL	14	38
SHERMAN, LEONARD	12	26
Todd Singer Diagnostic Radiology · Naperville, IL	11	31
Amaar Malik Diagnostic Radiology · Naperville, IL	11	25

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
EDWARD HOSPITAL	149	891
Sandra Davis Nurse Practitioner · Naperville, IL	57	176
Quest Diagnostics Llc Il Clinical Laboratory · Wood Dale, IL	30	76
Christina Bartz Physician Assistant · Naperville, IL	24	84
Tina Bhargava Internal Medicine · Naperville, IL	24	74
Michael Mitchell Diagnostic Radiology · Naperville, IL	21	53
Eve Mara Diagnostic Radiology · Naperville, IL	19	69
Mark Ottolin Internal Medicine · Naperville, IL	18	48
HAGGAR, ALLAN	18	39
Heidi Eklund Diagnostic Radiology · Naperville, IL	15	25
Darius Gilvydis Diagnostic Radiology · Naperville, IL	15	43
Ankur Vaghani Diagnostic Radiology · Naperville, IL	14	30

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