What is Anna Chang's specialty?

Anna Chang (NPI 1568402931) is a Medicare-billing provider whose primary specialty is Endocrinology in Concord, CA.

Where does Anna Chang practice?

Anna Chang practices in Concord, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1568402931.

How much does Medicare pay Anna Chang?

Anna Chang (NPI 1568402931) received approximately $197K in total Medicare Part B payments, serving 671 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1568402931

Anna ChangM.D.

PRACTICEJOHN MUIR PHYSICIAN NETWORKSee all providers at this practice →

EndocrinologyConcord, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,137

Unique beneficiaries

—

Total services

4,475

Distinct HCPCS

Medicare payment

$158K

Peer benchmark

Total Medicare services vs. 633 Endocrinology providers in CA — top quintile (cohort median 1,164).

PRESCRIBING · PART D · 2024

Total Rx claims

2,686

Beneficiaries

—

Total drug cost

$1.3M

Distinct drugs

Brand share

49.4%

Top prescribed drugs

Levothyroxine Sodium426 claims

Metformin Hcl239 claims

Empagliflozin215 claims

Semaglutide185 claims

Tirzepatide126 claims

QUALITY · MIPS · 2024

Final MIPS score

90.3

Quality

89.5

Cost

74.3

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.64%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$447

Payment records

By payment type

Food and Beverage$447

Top paying entities

Food and Beverage$447

REFERRAL NETWORK

Where Anna 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). 2 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Colleen Kenney Podiatry · Concord, CA	15	25
Lindsay Chong Endocrinology · Concord, CA	15	32

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