What is Calvin Ly's specialty?

Calvin Ly (NPI 1376761767) is a Medicare-billing provider whose primary specialty is Emergency Medicine in Hercules, CA.

Where does Calvin Ly practice?

Calvin Ly practices in Hercules, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1376761767.

How much does Medicare pay Calvin Ly?

Calvin Ly (NPI 1376761767) received approximately $371K in total Medicare Part B payments, serving 371 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1376761767

Calvin LyDO

Emergency MedicineHercules, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

800

Unique beneficiaries

—

Total services

4,357

Distinct HCPCS

Medicare payment

$370K

Peer benchmark

Total Medicare services vs. 5,287 Emergency Medicine providers in CA — top quintile (cohort median 355).

PRESCRIBING · PART D · 2024

Total Rx claims

13,013

Beneficiaries

—

Total drug cost

$1.7M

Distinct drugs

175

Brand share

26.0%

Top prescribed drugs

Atorvastatin Calcium628 claims

Amlodipine Besylate490 claims

Levothyroxine Sodium459 claims

Apixaban402 claims

Divalproex Sodium351 claims

QUALITY · MIPS · 2024

Final MIPS score

23.8

Quality

0.0

Cost

79.4

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

-6.14%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Calvin Ly'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). 1 inbound referrers · 9 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
City & County Of San Francisco Ambulance Service Provider · San Francisco, CA	28	115

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
SUTTER BAY HOSPITALS	62	144
SUTTER BAY HOSPITALS	38	107
OSHITA, ALLEN	16	26
CITY & COUNTY OF SAN FRANCISCO	16	77
John Bokelman Diagnostic Radiology · San Francisco, CA	13	28
Maya Meux Diagnostic Radiology · San Francisco, CA	12	17
SUTTER BAY HOSPITALS	11	28
Protransport 1 Ambulance Service Provider · Rohnert Park, CA	11	13
UNIVERSITY OF CALIFORNIA, SAN FRANCISCO	11	48

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