What is Daniel Ahn's specialty?

Daniel Ahn (NPI 1932416781) is a Medicare-billing provider whose primary specialty is Ophthalmology in Sonoma, CA.

Where does Daniel Ahn practice?

Daniel Ahn practices in Sonoma, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1932416781.

How much does Medicare pay Daniel Ahn?

Daniel Ahn (NPI 1932416781) received approximately $371K in total Medicare Part B payments, serving 934 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1932416781

Daniel AhnD.O.

PRACTICETHOMAS M. DIXON, M.D.See all providers at this practice →

OphthalmologySonoma, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

3,644

Unique beneficiaries

—

Total services

4,289

Distinct HCPCS

Medicare payment

$352K

Peer benchmark

Total Medicare services vs. 2,144 Ophthalmology providers in CA — above median (cohort median 1,859).

PRESCRIBING · PART D · 2024

Total Rx claims

3,888

Beneficiaries

—

Total drug cost

$574K

Distinct drugs

Brand share

28.2%

Top prescribed drugs

Prednisolone Acetate914 claims

Latanoprost618 claims

Ketorolac Tromethamine487 claims

Ofloxacin478 claims

Lifitegrast268 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

Education$18

Top paying entities

Food and Beverage$2K

Education$18

REFERRAL NETWORK

Where Daniel Ahn'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). 29 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
NORCAL HEALTHCONNECT LLC	85	228
ST. JOSEPH HEALTH NORTHERN CALIFORNIA, LLC	76	132
NORTH SONOMA COUNTY HEALTH CARE DISTRICT	69	160
North Bay Eye Associates A Medical Corporation Ambulatory Surgical Center · Santa Rosa, CA	51	81
James Price Internal Medicine · Sonoma, CA	40	113
William Demartini Diagnostic Radiology · Greenbrae, CA	36	54
Brian Sebastian Internal Medicine · Sonoma, CA	34	84
Robert Wirth Diagnostic Radiology · Novato, CA	22	35
S Campbell Internal Medicine · Sonoma, CA	20	62
Roger Weeks Ophthalmology · Petaluma, CA	17	26
MARGUGLIO, PAUL	17	38
NPI 1316037856	16	24

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