caretrace.iopowered by▸healthparse
SearchCohort Builder
Tools▾
KOL FinderTerritoriesDrug Compare
AI Query
Browse▾
By stateBy specialty
Pricing
SearchCohort BuilderToolsKOL FinderTerritoriesDrug CompareAI QueryBrowseBy stateBy specialtyPricing
PROVIDER PROFILE · NPI 1073549887

Nathan GrunwaldMD

Family PracticeMenasha, WII
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
FACILITY AFFILIATIONS

Hospital & Facility Affiliations (4)

CCN 527010
Home health agency
CCN 521504
Hospice
CCN 520045
Hospital
CCN 520160
Hospital
REFERRAL NETWORK

Where Nathan Grunwald'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). 1 inbound referrers · 4 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
ASCENSION NE WISCONSIN, INC1164
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
THEDACARE REGIONAL MEDICAL CENTER - APPLETON, INC.45423
THEDACARE REGIONAL MEDICAL CENTER-NEENAH, INC.42534
John Spencer
Family Practice · Menasha, WI
1493
David Anderla
Family Practice · Appleton, WI
1390
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.
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
845
Unique beneficiaries
—
Total services
1,235
Distinct HCPCS
19
Medicare payment
$43K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 2,096 Family Practice providers in WI — top quintile (cohort median 478).
PRESCRIBING · PART D · 2024
Total Rx claims
6,441
Beneficiaries
—
Total drug cost
$424K
Distinct drugs
90
Brand share
14.0%
Top prescribed drugs
Atorvastatin Calcium797 claims
Amlodipine Besylate501 claims
Losartan Potassium291 claims
Omeprazole245 claims
Metoprolol Succinate238 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.