PROVIDER PROFILE · NPI 1962411272

Mark ByrneM.D.

PRACTICEBRENNAN MEDICAL GROUPSee all providers at this practice →

CardiologyWatsonville, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

5,413

Unique beneficiaries

—

Total services

11,712

Distinct HCPCS

Medicare payment

$801K

Peer benchmark

Total Medicare services vs. 1,869 Cardiology providers in CA — top quintile (cohort median 2,371).

PRESCRIBING · PART D · 2024

Total Rx claims

8,250

Beneficiaries

—

Total drug cost

$1.1M

Distinct drugs

115

Brand share

20.0%

Top prescribed drugs

Carvedilol541 claims

Losartan Potassium512 claims

Atorvastatin Calcium477 claims

Rosuvastatin Calcium358 claims

Irbesartan324 claims

QUALITY · MIPS · 2024

Final MIPS score

89.3

Quality

71.4

Cost

77.1

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.60%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$1K

Payment records

By payment type

Food and Beverage$1K

REFERRAL NETWORK

Where Mark Byrne'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). 29 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Francis Bayaca Family Practice · Watsonville, CA	329	1,495
NPI 1225047558	310	1,878
Annette Rasi Diagnostic Radiology · Salinas, CA	73	217
Jennifer Lin Diagnostic Radiology · Santa Cruz, CA	49	145
Nicole Surdock Podiatry · Watsonville, CA	43	158
Roy Martinez Diagnostic Radiology · Santa Cruz, CA	41	99
Francisco Ravago Internal Medicine · Freedom, CA	38	120
Peter Markel Emergency Medicine · Watsonville, CA	37	162
DIGNITY HEALTH	34	139
SOUTH, DAVID	31	71
SCHMETZ, MARK	31	80
Camille Washowich Nurse Practitioner · Santa Cruz, CA	28	180

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