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 1407869167

William MarkoffM.D.

PRACTICENORTHERN CALIFORNIA MEDICAL ASSOC INCSee all providers at this practice →
Family PracticeSanta Rosa, CAI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
1,859
Unique beneficiaries
—
Total services
2,991
Distinct HCPCS
13
Medicare payment
$211K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 8,228 Family Practice providers in CA — top quintile (cohort median 411).
PRESCRIBING · PART D · 2024
Total Rx claims
7,950
Beneficiaries
—
Total drug cost
$367K
Distinct drugs
111
Brand share
14.1%
Top prescribed drugs
Atorvastatin Calcium651 claims
Levothyroxine Sodium462 claims
Rosuvastatin Calcium348 claims
Amlodipine Besylate326 claims
Metformin Hcl322 claims
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$17
Payment records
1
By payment type
Education$17
REFERRAL NETWORK

Where William Markoff'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). 10 inbound referrers · 22 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
ST. JOSEPH HEALTH NORTHERN CALIFORNIA, LLC203501
James Trapnell
Family Practice · Santa Rosa, CA
5485
David Schmidt
Diagnostic Radiology · Santa Rosa, CA
3960
Steven Kim
Podiatry · Santa Rosa, CA
2036
John Mcgovern
Diagnostic Radiology · Santa Rosa, CA
2053
Jack Waxman
Rheumatology · Santa Rosa, CA
1724
NPI 12345678931417
SUTTER WEST BAY MEDICAL FOUNDATION13107
Shawn Daly
Diagnostic Radiology · Santa Rosa, CA
1318
BELOGORSKY, EUGENE1223
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
Laboratory Corporation Of America
Clinical Laboratory · San Diego, CA
159320
ST. JOSEPH HEALTH NORTHERN CALIFORNIA, LLC140312
James Trapnell
Family Practice · Santa Rosa, CA
4685
LOMAX, JEREMY SCOTT3558
Sarah Stassi
Diagnostic Radiology · Santa Rosa, CA
2953
WILLIAMS, MICHAEL2856
NPI 19221984722754
David Schmidt
Diagnostic Radiology · Santa Rosa, CA
2432
SUTTER BAY HOSPITALS2336
Sanjay Dhar
Cardiology · Santa Rosa, CA
2190
Anusuya Mokashi
Diagnostic Radiology · Santa Rosa, CA
2141
Steven Kim
Podiatry · Santa Rosa, CA
1845
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.