What is Mark Berntsen's specialty?

Mark Berntsen (NPI 1730166687) is a Medicare-billing provider whose primary specialty is Internal Medicine in Greeley, CO.

Where does Mark Berntsen practice?

Mark Berntsen practices in Greeley, CO, based on the location reported in the CMS Medicare provider datasets for NPI 1730166687.

How much does Medicare pay Mark Berntsen?

Mark Berntsen (NPI 1730166687) received approximately $114K in total Medicare Part B payments, serving 820 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1730166687

Mark BerntsenMD

PRACTICEGREELEY MEDICAL CLINICSee all providers at this practice →

Internal MedicineGreeley, COI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,087

Unique beneficiaries

—

Total services

2,668

Distinct HCPCS

Medicare payment

$110K

Peer benchmark

Total Medicare services vs. 1,144 Internal Medicine providers in CO — top quintile (cohort median 528).

PRESCRIBING · PART D · 2024

Total Rx claims

24,903

Beneficiaries

—

Total drug cost

$2.1M

Distinct drugs

203

Brand share

17.4%

Top prescribed drugs

Levothyroxine Sodium1,362 claims

Amlodipine Besylate1,252 claims

Atorvastatin Calcium1,221 claims

Lisinopril1,107 claims

Losartan Potassium1,089 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Mark Berntsen'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). 79 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Horizon Laboratory Llc Clinical Laboratory · Loveland, CO	90	311
Samuel Fuller Diagnostic Radiology · Greeley, CO	73	189
Lin-Wang Dong Cardiology · Greeley, CO	70	225
Jeremy Mccue Diagnostic Radiology · Green Bay, WI	61	158
Daniel Zenk Internal Medicine · Greeley, CO	56	128
CREWS, MICHAEL	53	117
Jaime Contreras Diagnostic Radiology · Austin, TX	51	106
Stanley Weinstein Diagnostic Radiology · Fort Collins, CO	47	87
Kevin Limbaugh Diagnostic Radiology · Fort Collins, CO	47	123
Andrew Mills Diagnostic Radiology · Fort Collins, CO	46	116
NPI 1003869934	46	69
WELD LTC INVESTORS LLC	44	185

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