What is Mark Sierra's specialty?

Mark Sierra (NPI 1639381593) is a Medicare-billing provider whose primary specialty is Cardiology in West Branch, MI.

Where does Mark Sierra practice?

Mark Sierra practices in West Branch, MI, based on the location reported in the CMS Medicare provider datasets for NPI 1639381593.

How much does Medicare pay Mark Sierra?

Mark Sierra (NPI 1639381593) received approximately $23K in total Medicare Part B payments, serving 598 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1639381593

Mark SierraMD

CardiologyWest Branch, MII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

810

Unique beneficiaries

—

Total services

852

Distinct HCPCS

Medicare payment

$22K

Peer benchmark

Total Medicare services vs. 628 Cardiology providers in MI — below median (cohort median 1,777).

PRESCRIBING · PART D · 2024

Total Rx claims

5,404

Beneficiaries

—

Total drug cost

$825K

Distinct drugs

Brand share

26.7%

Top prescribed drugs

Metoprolol Succinate594 claims

Isosorbide Mononitrate393 claims

Atorvastatin Calcium374 claims

Apixaban357 claims

Furosemide326 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$127

Payment records

By payment type

Food and Beverage$127

Top paying entities

Food and Beverage$127

REFERRAL NETWORK

Where Mark Sierra'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). 58 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
WEST BRANCH REGIONAL MEDICAL CENTER	846	4,165
David Ternes Cardiology · West Branch, MI	214	524
QUEST DIAGNOSTICS INCORPORATED MI	210	547
Theodore Bash Family Practice · West Branch, MI	137	616
MCLAREN PRIMARY CARE	135	353
BEASLEY, MICHAEL	128	455
WERTZ, THOMAS	94	286
Rasheed Siddiqui Internal Medicine · Standish, MI	92	216
Stephen Mattichak Cardiology · Midland, MI	65	161
Rajesh Mithalal Diagnostic Radiology · Grand Rapids, MI	65	141
Sharon Levandowski Hematology-Oncology · Midland, MI	63	676
Macksood Aftab Diagnostic Radiology · Saginaw, MI	58	101

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