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 1265448930

Charles ZenzenMD

OphthalmologyGrand Blanc, MII
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
QUALITY · MIPS · 2024
Final MIPS score
93.6
Quality
100.0
Cost
78.7
Improvement activities
40.0
Promoting interop.
100.0
Payment adjustment
0.78%
Individual
PRESCRIBING · PART D · 2024
Total Rx claims
2,902
Beneficiaries
—
Total drug cost
$139K
Distinct drugs
16
Brand share
20.0%
Top prescribed drugs
Latanoprost1,033 claims
Ketorolac Tromethamine355 claims
Moxifloxacin Hcl351 claims
Prednisolone Acetate344 claims
Brimonidine Tartrate313 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$96
Payment records
4
By payment type
Food and Beverage$96
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
1,381
Unique beneficiaries
—
Total services
1,683
Distinct HCPCS
16
Medicare payment
$132K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 608 Ophthalmology providers in MI — above median (cohort median 1,582).
REFERRAL NETWORK

Where Charles Zenzen'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). 28 inbound referrers · 82 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
WEST BRANCH REGIONAL MEDICAL CENTER159503
QUEST DIAGNOSTICS INCORPORATED MI109257
BEASLEY, MICHAEL35139
MCLAREN PRIMARY CARE3053
Sayyid Raza
Internal Medicine · Bay City, MI
2871
Valluru Reddy
Internal Medicine · Bay City, MI
2873
James Finch
Diagnostic Radiology · Bay City, MI
2760
STERLING AREA HEALTH CENTER2440
Glenn Kershen
Urology · Saginaw, MI
1944
Kelly Bulow
Optometry · West Branch, MI
1935
MUNSON HEALTHCARE GRAYLING1831
Theodore Bash
Family Practice · West Branch, MI
1878
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
MCLAREN BAY REGION3351,259
WEST BRANCH REGIONAL MEDICAL CENTER174957
QUEST DIAGNOSTICS INCORPORATED MI106220
REGENTS OF THE UNIVERSITY OF MICHIGAN84128
EVON-GABOURIE, GERALYN52251
Matthew Waack
Diagnostic Radiology · Grand Rapids, MI
50123
MCLAREN PRIMARY CARE3862
Mark Sierra
Cardiology · West Branch, MI
3273
BEASLEY, MICHAEL30107
Jere Getzinger
Certified Registered Nurse Anesthetist (CRNA) · West Branch, MI
30136
COVENANT MEDICAL CENTER, INC.2957
Leslie Norris
Ophthalmology · Bay City, MI
2936
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.