What is Donald Grenz's specialty?

Donald Grenz (NPI 1699720995) is a Medicare-billing provider whose primary specialty is Internal Medicine in Bismarck, ND.

Where does Donald Grenz practice?

Donald Grenz practices in Bismarck, ND, based on the location reported in the CMS Medicare provider datasets for NPI 1699720995.

How much does Medicare pay Donald Grenz?

Donald Grenz (NPI 1699720995) received approximately $240K in total Medicare Part B payments, serving 593 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1699720995

Donald GrenzMD

PRACTICEEVOLVE DERMATOLOGYSee all providers at this practice →

Internal MedicineBismarck, NDI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,211

Unique beneficiaries

—

Total services

5,535

Distinct HCPCS

Medicare payment

$235K

Peer benchmark

Total Medicare services vs. 128 Internal Medicine providers in ND — top quintile (cohort median 774).

PRESCRIBING · PART D · 2024

Total Rx claims

14,543

Beneficiaries

—

Total drug cost

$1.2M

Distinct drugs

143

Brand share

22.7%

Top prescribed drugs

Amlodipine Besylate1,021 claims

Rosuvastatin Calcium868 claims

Atorvastatin Calcium658 claims

Omeprazole493 claims

Losartan Potassium492 claims

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 Donald Grenz'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). 32 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ST. ALEXIUS MEDICAL CENTER	264	1,370
Andrew Wilder Diagnostic Radiology · Bismarck, ND	125	351
Jessica Ruhland Diagnostic Radiology · Asheville, NC	99	321
Douglas Moen Family Practice · Bismarck, ND	45	118
DIEDE, STANLEY	41	186
RUNCK, DENNIS	27	87
Michael Schirado Diagnostic Radiology · Roseville, MN	23	50
SANATHANAMURTHY, MYLAPANAHALLI	23	118
Robert Tanous Internal Medicine · Bismarck, ND	20	75
ROLLER, BENEDICT	20	56
ST. ALEXIUS MEDICAL CENTER	19	46
Christian Sorensen Internal Medicine · Fargo, ND	19	64

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