What is Ernie Riffer's specialty?

Ernie Riffer (NPI 1134284268) is a Medicare-billing provider whose primary specialty is Internal Medicine in Phoenix, AZ.

Where does Ernie Riffer practice?

Ernie Riffer practices in Phoenix, AZ, based on the location reported in the CMS Medicare provider datasets for NPI 1134284268.

How much does Medicare pay Ernie Riffer?

Ernie Riffer (NPI 1134284268) received approximately $79K in total Medicare Part B payments, serving 345 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1134284268

Ernie RifferMD

Internal MedicinePhoenix, AZI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

669

Unique beneficiaries

—

Total services

843

Distinct HCPCS

Medicare payment

$71K

Peer benchmark

Total Medicare services vs. 1,880 Internal Medicine providers in AZ — above median (cohort median 646).

PRESCRIBING · PART D · 2024

Total Rx claims

8,068

Beneficiaries

—

Total drug cost

$588K

Distinct drugs

135

Brand share

18.8%

Top prescribed drugs

Atorvastatin Calcium630 claims

Levothyroxine Sodium450 claims

Amlodipine Besylate323 claims

Lisinopril273 claims

Tamsulosin Hcl268 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$124

Payment records

By payment type

Food and Beverage$124

Top paying entities

Food and Beverage$124

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 030024

Hospital

REFERRAL NETWORK

Where Ernie Riffer'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). 0 inbound referrers · 9 outbound destinations.

Receives referrals from

Inbound — who sends patients here

No inbound pairs above the suppression threshold.

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Sonora Quest Laboratories Llc Clinical Laboratory · Phoenix, AZ	223	736
Laboratory Corporation Of America Clinical Laboratory · Phoenix, AZ	16	49
Jeremy Van Buren Ophthalmology · Phoenix, AZ	16	46
SMI IMAGING LLC	15	31
HONORHEALTH	13	24
BANNER - UNIVERSITY MEDICAL CENTER PHOENIX	12	19
HONORHEALTH	11	21
ARIZONA CARDIAC SONOGRAPHERS LLC	11	14
Richard Heuser Interventional Cardiology · Phoenix, AZ	11	13

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