What is Cathy Riker's specialty?

Cathy Riker (NPI 1255448189) is a Medicare-billing provider whose primary specialty is Rheumatology in Menlo Park, CA.

Where does Cathy Riker practice?

Cathy Riker practices in Menlo Park, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1255448189.

How much does Medicare pay Cathy Riker?

Cathy Riker (NPI 1255448189) received approximately $109K in total Medicare Part B payments, serving 186 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1255448189

Cathy RikerMD

RheumatologyMenlo Park, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

372

Unique beneficiaries

—

Total services

804

Distinct HCPCS

Medicare payment

$99K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

982

Beneficiaries

—

Total drug cost

$1.7M

Distinct drugs

Brand share

30.1%

Top prescribed drugs

Prednisone203 claims

Hydroxychloroquine Sulfate172 claims

Methotrexate Sodium98 claims

Allopurinol76 claims

Alendronate Sodium41 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$110

Payment records

By payment type

Food and Beverage$110

Top paying entities

Food and Beverage$110

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 050441

Hospital

REFERRAL NETWORK

Where Cathy Riker'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). 8 inbound referrers · 20 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Roberta Wong Diagnostic Radiology · Menlo Park, CA	60	213
WEXLER, LEWIS	41	179
Donna Lee Ophthalmology · Menlo Park, CA	27	60
SELLING, JOHN	21	107
Paul Yun Otolaryngology · Menlo Park, CA	15	47
TRAVER-SELLING, KELLY	14	44
CRESCENDO BIOSCIENCE, INC	13	19
Kathryn Stevens Diagnostic Radiology · Stanford, CA	11	25

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
STANFORD HEALTH CARE	189	1,735
Roberta Wong Diagnostic Radiology · Menlo Park, CA	52	134
Jeffrey Guardino Cardiology · Menlo Park, CA	25	68
Seema Sinha Cardiology · Menlo Park, CA	22	107
Donna Lee Ophthalmology · Menlo Park, CA	22	64
Peter Sklarin Internal Medicine · Menlo Park, CA	20	57
TRAVER-SELLING, KELLY	19	68
SELLING, JOHN	18	107
Unilab Corporation Clinical Laboratory · San Jose, CA	18	68
CRESCENDO BIOSCIENCE, INC	16	36
WEXLER, LEWIS	15	27
Joellen Vanzander Dermatology · Menlo Park, CA	13	32

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