What is Ahmed Abou-Zamzam's specialty?

Ahmed Abou-Zamzam (NPI 1558306795) is a Medicare-billing provider whose primary specialty is Vascular Surgery in Loma Linda, CA.

Where does Ahmed Abou-Zamzam practice?

Ahmed Abou-Zamzam practices in Loma Linda, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1558306795.

How much does Medicare pay Ahmed Abou-Zamzam?

Ahmed Abou-Zamzam (NPI 1558306795) received approximately $95K in total Medicare Part B payments, serving 700 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1558306795

Ahmed Abou-ZamzamM.D.

PRACTICEFACULTY PHYSICIANS AND SURGEONS OF LLUSMSee all providers at this practice →

Vascular SurgeryLoma Linda, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

921

Unique beneficiaries

—

Total services

1,076

Distinct HCPCS

Medicare payment

$52K

Peer benchmark

Total Medicare services vs. 399 Vascular Surgery providers in CA — above median (cohort median 763).

PRESCRIBING · PART D · 2024

Total Rx claims

147

Beneficiaries

—

Total drug cost

$21K

Distinct drugs

Brand share

38.1%

Top prescribed drugs

Cilostazol62 claims

Clopidogrel Bisulfate38 claims

Atorvastatin Calcium29 claims

Apixaban18 claims

QUALITY · MIPS · 2024

Final MIPS score

88.9

Quality

72.1

Cost

77.4

Improvement activities

40.0

Promoting interop.

80.0

Payment adjustment

0.58%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$739

Payment records

By payment type

Food and Beverage$739

Top paying entities

Food and Beverage$739

REFERRAL NETWORK

Where Ahmed Abou-Zamzam'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). 25 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
SEVENTH-DAY ADVENTISTS LOMA LINDA UNIVERSITY MEDICAL CENTER	329	1,090
Sheela Patel Vascular Surgery · San Francisco, CA	53	145
KILLEEN, J.	47	136
Shannon Kirk Diagnostic Radiology · Loma Linda, CA	44	91
Unilab Corporation Clinical Laboratory · West Hills, CA	42	116
Samuel Randolph Diagnostic Radiology · Loma Linda, CA	41	69
Kendra Fisher Diagnostic Radiology · Loma Linda, CA	30	60
Erica Kinne Diagnostic Radiology · Loma Linda, CA	24	37
Padmini Varadarajan Cardiology · Redlands, CA	23	34
Nirav Mamdani Cardiology · Loma Linda, CA	23	41
Daniel Kido Diagnostic Radiology · Loma Linda, CA	21	33
Alexander Chien Diagnostic Radiology · Pomona, CA	21	43

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