What is Charles Weidmann's specialty?

Charles Weidmann (NPI 1851372288) is a Medicare-billing provider whose primary specialty is Rheumatology in Van Nuys, CA.

Where does Charles Weidmann practice?

Charles Weidmann practices in Van Nuys, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1851372288.

How much does Medicare pay Charles Weidmann?

Charles Weidmann (NPI 1851372288) received approximately $1.1M in total Medicare Part B payments, serving 271 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1851372288

Charles WeidmannM.D.

PRACTICEWEST COAST RHEUMATOLOGY ASSOCIATESSee all providers at this practice →

RheumatologyVan Nuys, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

6,998

Unique beneficiaries

—

Total services

45,977

Distinct HCPCS

Medicare payment

$983K

Peer benchmark

Total Medicare services vs. 530 Rheumatology providers in CA — top quintile (cohort median 1,833).

PRESCRIBING · PART D · 2024

Total Rx claims

1,565

Beneficiaries

—

Total drug cost

$1.7M

Distinct drugs

Brand share

51.4%

Top prescribed drugs

Hydrocodone/Acetaminophen160 claims

Denosumab132 claims

Abatacept/Maltose121 claims

Gabapentin106 claims

Methotrexate Sodium103 claims

QUALITY · MIPS · 2024

Final MIPS score

99.1

Quality

94.0

Cost

35.6

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

1.01%

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 Charles Weidmann'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). 15 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	120	450
RHEUMATOLOGY DIAGNOSTICS LABORATORY INC	42	93
John Crues Diagnostic Radiology · Los Angeles, CA	31	155
DIGNITY COMMUNITY CARE	24	58
Vijay Mandyam Podiatry · Lancaster, CA	23	88
ALONSO, LAZARO	22	83
Kevin Rice Diagnostic Radiology · Cape Girardeau, MO	21	77
Munaf Shamji Cardiology · Van Nuys, CA	19	41
PROVIDENCE HEALTH SYSTEM - SOUTHERN CALIFORNIA	18	56
City Of Los Angeles Ambulance Service Provider · Los Angeles, CA	18	26
PROVIDENCE HEALTH SYSTEM - SOUTHERN CALIFORNIA	16	45
Ashwin Prabhu Diagnostic Radiology · Los Angeles, CA	15	71

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