What is Catherine Diamond's specialty?

Catherine Diamond (NPI 1649350786) is a Medicare-billing provider whose primary specialty is Internal Medicine in Orange, CA.

Where does Catherine Diamond practice?

Catherine Diamond practices in Orange, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1649350786.

How much does Medicare pay Catherine Diamond?

Catherine Diamond (NPI 1649350786) received approximately $37K in total Medicare Part B payments, serving 189 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1649350786

Catherine DiamondMD

Internal MedicineOrange, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

253

Unique beneficiaries

—

Total services

442

Distinct HCPCS

Medicare payment

$33K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — below median (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

4,769

Beneficiaries

—

Total drug cost

$5.3M

Distinct drugs

115

Brand share

46.6%

Top prescribed drugs

Bictegrav/Emtricit/Tenofov Ala549 claims

Atorvastatin Calcium285 claims

Gabapentin135 claims

Darunavir/Cob/Emtri/Tenof Alaf133 claims

Amlodipine Besylate131 claims

QUALITY · MIPS · 2024

Final MIPS score

100.0

Quality

83.7

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

1.05%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Catherine Diamond'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). 6 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Byron J Allen Internal Medicine · Orange, CA	30	149
Hiroshi Yoshioka Diagnostic Radiology · Boston, MA	19	60
Marisa Tseng Diagnostic Radiology · Duarte, CA	17	79
Unilab Corporation Clinical Laboratory · West Hills, CA	16	66
Mayil Krishnam Diagnostic Radiology · Stanford, CA	12	31
Teferi Mitiku Internal Medicine · Orange, CA	11	63

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