What is Nerissa Ko's specialty?

Nerissa Ko (NPI 1821029059) is a Medicare-billing provider whose primary specialty is Neurology in San Francisco, CA.

Where does Nerissa Ko practice?

Nerissa Ko practices in San Francisco, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1821029059.

How much does Medicare pay Nerissa Ko?

Nerissa Ko (NPI 1821029059) received approximately $44K in total Medicare Part B payments, serving 357 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1821029059

Nerissa KoM.D.

NeurologySan Francisco, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

389

Unique beneficiaries

—

Total services

492

Distinct HCPCS

Medicare payment

$37K

Peer benchmark

Total Medicare services vs. 1,670 Neurology providers in CA — below median (cohort median 581).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

99.0

Quality

95.0

Cost

80.6

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

1.01%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Nerissa Ko'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). 13 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Gordon Fung Cardiology · San Francisco, CA	68	350
City & County Of San Francisco Ambulance Service Provider · San Francisco, CA	33	109
Karl Meisel Neurology · Fort Myers, FL	21	193
American Medical Response West Ambulance Service Provider · San Francisco, CA	18	47
Michael Conte Vascular Surgery · San Francisco, CA	16	25
Charles Eichler Vascular Surgery · San Francisco, CA	16	35
Derek Sun Diagnostic Radiology · San Francisco, CA	14	39
Cynthia Chin Diagnostic Radiology · San Francisco, CA	13	69
Leo Sugrue Diagnostic Radiology · San Francisco, CA	13	52
Michael Lawton Neurosurgery · Phoenix, AZ	12	70
Christine Glastonbury Diagnostic Radiology · San Francisco, CA	12	44
KILLEBREW, ELLEN	11	45

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