What is John Riel's specialty?

John Riel (NPI 1447213251) is a Medicare-billing provider whose primary specialty is Emergency Medicine in Newport Beach, CA.

Where does John Riel practice?

John Riel practices in Newport Beach, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1447213251.

How much does Medicare pay John Riel?

John Riel (NPI 1447213251) received approximately $71K in total Medicare Part B payments, serving 410 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1447213251

John RielM.D.

Emergency MedicineNewport Beach, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

559

Unique beneficiaries

—

Total services

572

Distinct HCPCS

Medicare payment

$65K

Peer benchmark

Total Medicare services vs. 5,287 Emergency Medicine providers in CA — above median (cohort median 355).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$662

Distinct drugs

Brand share

41.9%

Top prescribed drugs

Ondansetron19 claims

Hydrocodone/Acetaminophen17 claims

Oxycodone Hcl14 claims

Doxycycline Monohydrate13 claims

Cefdinir12 claims

QUALITY · MIPS · 2024

Final MIPS score

100.0

Quality

96.4

Cost

73.6

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

1.05%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where John Riel'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). 32 inbound referrers · 107 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	80	193
Scott Williams Diagnostic Radiology · Stanford, CA	60	93
Winston Whitney Diagnostic Radiology · Newport Beach, CA	60	92
John Lieu Diagnostic Radiology · Palo Alto, CA	49	82
William Vandalsem Diagnostic Radiology · Newport Beach, CA	48	85
Shaya Ghazinoor Diagnostic Radiology · Newport Beach, CA	40	80
Karence Chan Diagnostic Radiology · Newport Beach, CA	38	51
Frederick Birnberg Diagnostic Radiology · Newport Beach, CA	36	57
Peter Giuliano Diagnostic Radiology · Newport Beach, CA	36	50
Michael Roossin Diagnostic Radiology · Newport Beach, AR	35	54
January Lopez Diagnostic Radiology · Pasadena, CA	26	39
Marnie Kremer Prill Diagnostic Radiology · Newport Beach, CA	26	39

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
HOAG MEMORIAL HOSPITAL PRESBYTERIAN	653	1,559
Falck Mobile Health Corp Ambulance Service Provider · Orange, CA	128	327
Mark Chen Diagnostic Radiology · Newport Beach, CA	98	158
City Of Newport Beach Ambulance Service Provider · Newport Beach, CA	92	161
Roger Thomas Diagnostic Radiology · Newport Beach, CA	85	131
Jinsoo Keyoung Diagnostic Radiology · Stanford, CA	78	139
LIM, JOHN	69	112
City Of Huntington Beach Ambulance Service Provider · Huntington Beach, CA	69	117
CALIFORNIA LABORATORY SCIENCES LLC	69	170
Humberto Wong Diagnostic Radiology · Stanford, CA	65	117
Unilab Corporation Clinical Laboratory · West Hills, CA	65	159
Miles Chang Diagnostic Radiology · Newport Beach, CA	62	92

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