What is Natalia Chavez Stewart's specialty?

Natalia Chavez Stewart (NPI 1235278250) is a Medicare-billing provider whose primary specialty is Rheumatology in Riverside, CA.

Where does Natalia Chavez Stewart practice?

Natalia Chavez Stewart practices in Riverside, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1235278250.

How much does Medicare pay Natalia Chavez Stewart?

Natalia Chavez Stewart (NPI 1235278250) received approximately $240K in total Medicare Part B payments, serving 196 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1235278250

Natalia Chavez StewartM.D.

RheumatologyRiverside, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

599

Unique beneficiaries

—

Total services

3,407

Distinct HCPCS

Medicare payment

$103K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

2,387

Beneficiaries

—

Total drug cost

$2.4M

Distinct drugs

Brand share

27.3%

Top prescribed drugs

Hydroxychloroquine Sulfate449 claims

Methotrexate Sodium250 claims

Gabapentin227 claims

Upadacitinib141 claims

Diclofenac Sodium117 claims

QUALITY · MIPS · 2024

Final MIPS score

65.0

Quality

66.5

Cost

78.7

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

-1.20%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$4K

Payment records

180

By payment type

Food and Beverage$4K

Top paying entities

Food and Beverage$4K

REFERRAL NETWORK

Where Natalia Chavez Stewart'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). 5 inbound referrers · 4 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PRESBYTERIAN HEALTHCARE SERVICES	115	714
PRESBYTERIAN HEALTHCARE SERVICES	89	237
RHEUMATOLOGY DIAGNOSTICS LABORATORY INC	39	289
Unilab Corporation Clinical Laboratory · West Hills, CA	31	220
SENAATI, SASSAN	15	167

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
PRESBYTERIAN HEALTHCARE SERVICES	53	305
Unilab Corporation Clinical Laboratory · West Hills, CA	35	328
PRESBYTERIAN HEALTHCARE SERVICES	22	57
Al Franco Rheumatology · Riverside, CA	12	163

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