What is Karynne Duncan's specialty?

Karynne Duncan (NPI 1548235617) is a Medicare-billing provider whose primary specialty is Dermatology in Saint Helena, CA.

Where does Karynne Duncan practice?

Karynne Duncan practices in Saint Helena, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1548235617.

How much does Medicare pay Karynne Duncan?

Karynne Duncan (NPI 1548235617) received approximately $219K in total Medicare Part B payments, serving 589 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1548235617

Karynne DuncanM.D.

PRACTICEKARYNNE O. DUNCAN, M.D., INCSee all providers at this practice →

DermatologySaint Helena, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,972

Unique beneficiaries

—

Total services

4,243

Distinct HCPCS

Medicare payment

$213K

Peer benchmark

Total Medicare services vs. 1,546 Dermatology providers in CA — above median (cohort median 2,504).

PRESCRIBING · PART D · 2024

Total Rx claims

388

Beneficiaries

—

Total drug cost

$7K

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Ketoconazole66 claims

Minoxidil63 claims

Mupirocin61 claims

Doxycycline Hyclate43 claims

Hydrocortisone28 claims

QUALITY · MIPS · 2024

Final MIPS score

99.2

Quality

17.5

Cost

73.5

Improvement activities

40.0

Promoting interop.

99.0

Payment adjustment

1.02%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Karynne Duncan'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). 14 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
John Geisse Micrographic Dermatologic Surgery · Vallejo, CA	160	274
ST. JOSEPH HEALTH NORTHERN CALIFORNIA, LLC	46	90
William Duge Diagnostic Radiology · Saint Helena, CA	34	42
Barry Brown Family Practice · Saint Helena, CA	29	62
Jonathan Wheeler Family Practice · Saint Helena, CA	26	73
John Bosetti Ophthalmology · Napa, CA	25	44
Julie Perry Ophthalmology · Saint Helena, CA	22	27
David Racker Diagnostic Radiology · Saint Helena, CA	21	32
Geoffrey Horn Diagnostic Radiology · Saint Helena, CA	19	24
Stuart Bursten Internal Medicine · Vista, CA	17	50
WOOLLEY, JAMES	15	26
STAGG, PATRICIA	14	34

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