What is Alan Chang's specialty?

Alan Chang (NPI 1699784934) is a Medicare-billing provider whose primary specialty is Internal Medicine in Escondido, CA.

Where does Alan Chang practice?

Alan Chang practices in Escondido, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1699784934.

How much does Medicare pay Alan Chang?

Alan Chang (NPI 1699784934) received approximately $107K in total Medicare Part B payments, serving 339 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1699784934

Alan ChangM.D.

Internal MedicineEscondido, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

591

Unique beneficiaries

—

Total services

919

Distinct HCPCS

Medicare payment

$101K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — top quintile (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

12,955

Beneficiaries

—

Total drug cost

$937K

Distinct drugs

188

Brand share

21.6%

Top prescribed drugs

Atorvastatin Calcium590 claims

Amlodipine Besylate578 claims

Levothyroxine Sodium524 claims

Rosuvastatin Calcium371 claims

Apixaban339 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$757

Payment records

By payment type

Food and Beverage$757

Top paying entities

Food and Beverage$757

REFERRAL NETWORK

Where Alan Chang'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). 16 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PALOMAR HEALTH	39	202
SHARP MEMORIAL HOSPITAL	34	82
SAN DIEGO MEDICAL SERVICES ENTERPRISE, LLC	26	115
Robert Lavigne Physician Assistant · San Diego, CA	19	45
FISCALE, LAUREN	18	30
PALOMAR HEALTH	17	94
POMERADO OPERATIONS, LLC	17	49
NPI 1245331230	15	45
Max Laufer Inc. Ambulance Service Provider · Lemon Grove, CA	15	133
Amir Hajimirsadeghi Podiatry · San Diego, CA	13	54
KOERNER-JORDAN, SARAH	13	95
Timothy Strouse Internal Medicine · Chula Vista, CA	12	15

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