What is William Macdonald's specialty?

William Macdonald (NPI 1679512149) is a Medicare-billing provider whose primary specialty is Pathology in Whittier, CA.

Where does William Macdonald practice?

William Macdonald practices in Whittier, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1679512149.

How much does Medicare pay William Macdonald?

William Macdonald (NPI 1679512149) received approximately $63K in total Medicare Part B payments, serving 706 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1679512149

William MacdonaldM.D.

PRACTICEDR RITA KAR INCSee all providers at this practice →

PathologyWhittier, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,311

Unique beneficiaries

—

Total services

2,270

Distinct HCPCS

Medicare payment

$62K

Peer benchmark

Total Medicare services vs. 1,209 Pathology providers in CA — above median (cohort median 1,423).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where William Macdonald'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). 69 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PIH HEALTH WHITTIER HOSPITAL	660	1,214
Unilab Corporation Clinical Laboratory · West Hills, CA	161	298
Neal Shindel Gastroenterology · Whittier, CA	102	265
Zareh Ounjian Diagnostic Radiology · Whittier, CA	85	127
Nanette Kovash Diagnostic Radiology · Sacramento, CA	77	122
Robert Kleinman Diagnostic Radiology · Whittier, CA	75	110
Sudhaker Nayak Cardiology · Whittier, CA	69	120
Shang Wu Gastroenterology · Hacienda Heights, CA	65	203
Christina Lee Diagnostic Radiology · Whittier, CA	65	94
Alireza Jafari Cardiology · Whittier, CA	61	85
Paresh Patel Internal Medicine · Whittier, CA	58	75
Daniel Saket Diagnostic Radiology · Whittier, CA	57	93

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