Sandy Chang

  • Loma Linda, CA
  • Infectious disease specialist
NPI1629465737PAC ID3173875457
Medicare services, 2024
172
Medicare patients, 2024
107
Part D claims, 2024
165
Publications
2
MIPS score, 2024
89
Practice address
11234 Anderson St, Loma Linda, CA 92354
Practice phone
Call (909) 558-4000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Loma Linda University Medical Center

Hospital · Loma Linda, California

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Sandy Chang is an infectious disease specialist in Loma Linda, California

Sandy Chang practices at Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church.

Sandy Chang's NPI, 1629465737, was assigned on April 16, 2015. Sandy Chang graduated from University of Illinois College of Medicine - Chicago in 2015. Sandy Chang holds California license A146846.

NPI and contact details
Medicare PAC ID
3173875457
NPI enumeration date
April 16, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(909) 558-4000
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Female
Estimated age
37
Medical school graduation
2015

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Sandy Chang practices at Loma Linda University Medical Center in Loma Linda, California

Sandy Chang's primary practice is Loma Linda University Medical Center, at 11234 Anderson St, Loma Linda, CA 92354 in San Bernardino County. The practice phone is (909) 558-4000.

Source: Dmand AI Affiliation Data

Sandy Chang is affiliated with 1 site of care and 1 medical group

Sandy Chang's primary practice is Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG).

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Sandy Chang's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Sandy Chang practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Loma Linda University Medical CenterAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dmand AI maps EHR vendors, IT decision makers and buying committees across Seventh-day Adventist Church and 6.2K+ hospitals, with verified contacts in the same login.

Sandy Chang is one of 1,054 infectious disease specialists in California

Infectious disease is Sandy Chang's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Sandy Chang is board certified in infectious disease by the American Board of Internal Medicine. Sandy Chang is licensed in California.

Specialties and state licenses

  • Infectious disease, CaliforniaPrimaryLicense A146846 · 2017 to 2027 · taxonomy 207RI0200X

Infectious disease specialists near Sandy Chang

Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Sandy Chang billed Medicare for 172 services in 2024

CMS data shows 172 Medicare services from Sandy Chang across 5 procedure codes in 2024, for 107 Medicare patients. Medicare paid $19,452 for them.

Medicare services, 2024172
Medicare patients107
Paid by Medicare$19,452
Procedure codes5

Sandy Chang's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2532024: 17232%

Where Sandy Chang's Medicare services took place, 2024

  • In an office5230%
  • In a facility12070%

Sandy Chang compared with the California median for infectious disease specialists, 2024

  • Sandy Chang
  • California median
Medicare services
172vs 42960% below
Medicare patients
107vs 18041% below
Part D claims
82vs 11931% below

Medians across 930 infectious disease specialists in California with Dmand AI profiles that report each measure.

Sandy Chang's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Sandy Chang

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Sandy Chang treated 107 Medicare patients in 2024, average age 62

CMS counts 107 Medicare patients who saw Sandy Chang in 2024. The largest group is under 65, with 54 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 77% are also on Medicaid. Their average risk score is 4.97, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Sandy Chang's median patient age at 58, with 51% women.

Medicare patients, 2024107
Average age62
Average risk score4.97
Also on Medicaid77%

Sandy Chang's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Sandy Chang's Medicare patients by sex, 2024

  • Women4845%
  • Men5955%

Chronic conditions among Sandy Chang's Medicare patients, 2024

  1. Chronic kidney disease75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Diabetes68%
  5. Heart failure55%
  6. Arthritis47%
  7. Ischemic heart disease41%
  8. Mood disorders36%

Share of Medicare patients with each condition. A patient can have several.

Sandy Chang's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 58

Patient panel by sex, all payers

  • Women51%
  • Men49%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Sandy Chang wrote 165 Medicare Part D claims in 2024

In 2024, Sandy Chang wrote 165 Medicare Part D claims for 28 patients. 68% of them were for generic drugs. CMS names the drug for 82 of them, across 6 drugs with 11 or more claims each, at $57,928 in total drug cost. In 2023, CMS named 90 claims across 6 drugs.

Part D claims, 2024165
Drugs named by CMS6
Total drug cost$57,928
Part D patients28

Sandy Chang's Part D claims by kind of drug, 2024

  • Generic113 claims68%
  • Brand-name52 claims32%

Sandy Chang's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Sandy Chang's Part D claims, 2024

  • Antibiotics31%51 of 165 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 902024: 829%

Drugs named by CMS: 6 in 2024, 6 in 2023.

See all prescribing by Sandy Chang

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Sandy Chang scored 89 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Sandy Chang for performance year 2024, reported as part of a group. Sandy Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Sandy Chang as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Sandy Chang's MIPS scores, performance year 2024

  • 89of 100Final score
  • 72.1of 100Quality
  • 80of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 77of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Sandy Chang has 2 publications on record

Dmand AI links 2 papers to Sandy Chang.

Papers2

Recent publications by Sandy Chang

See all 2 publications and co-authors

See who Sandy Chang researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Sandy Chang works with, so you can find a warm path to the right infectious disease specialists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Sandy Chang received $20 in industry payments in 2022

CMS Open Payments shows 1 general payment to Sandy Chang from 1 drug or device company in 2022. Education make up the largest share, 100% of the total. Theratechnologies Inc. paid the most, $20.

Companies that paid Sandy Chang the most, 2022 to 2022

Share is of all general payments to this clinician.

See all payments to Sandy Chang

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sandy Chang graduated from University of Illinois College of Medicine - Chicago

Sandy Chang graduated from University of Illinois College of Medicine - Chicago in 2015.

  1. Medical schoolUniversity of Illinois College of Medicine - Chicago
  2. Board certified in infectious diseaseAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Sandy Chang accepts plans from 16 insurance carriers

Sandy Chang is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Molina
  • Regence Health Plans
  • +8 more carriersWith a free account

Plan types Sandy Chang accepts, by number of carriers

  1. Medicare9
  2. PPO9
  3. HMO7
  4. POS5
  5. EPO4
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Sandy Chang's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Sandy Chang

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Sandy Chang's NPI number?

Sandy Chang's NPI number is 1629465737. It was assigned on April 16, 2015, and it is active in the NPI Registry.

What does Sandy Chang specialize in?

Sandy Chang is an infectious disease specialist in Loma Linda, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).

Where does Sandy Chang practice?

Sandy Chang practices at 11234 Anderson St, Loma Linda, CA 92354. Sandy Chang's primary practice is Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church.

What is Sandy Chang's office phone number?

The practice phone on file for Sandy Chang is (909) 558-4000.

What is Sandy Chang's medical license number?

Sandy Chang holds California license A146846.

Which hospitals is Sandy Chang affiliated with?

Sandy Chang practices at Loma Linda University Medical Center in Loma Linda, California.

What medical group is Sandy Chang part of?

Sandy Chang is linked to Loma Linda University Faculty Medical Group (LLUFMG).

Does Sandy Chang accept Medicare?

Yes. CMS data shows Sandy Chang billed Medicare for 172 services in 2024, and Sandy Chang accepts Medicare assignment.

Does Sandy Chang offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Sandy Chang as offering telehealth services.

What is Sandy Chang's MIPS score?

Sandy Chang's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.

Show 9 more questionsShow fewer questions

How many Medicare patients does Sandy Chang see?

CMS counts 107 Medicare patients who saw Sandy Chang in 2024, with an average age of 62.

Is Sandy Chang board certified?

Yes. Sandy Chang is board certified in infectious disease by the American Board of Internal Medicine.

What services does Sandy Chang bill to Medicare?

In 2024, Sandy Chang's most billed Medicare services were hospital inpatient care (99223), hospital inpatient care (99233) and office visit, established patient (99214).

Where did Sandy Chang go to medical school?

Sandy Chang graduated from University of Illinois College of Medicine - Chicago in 2015.

What drugs does Sandy Chang prescribe most?

In 2024 Medicare Part D data, Sandy Chang's most prescribed drugs by claims were Ceftazidime, Fluconazole and Biktarvy.

Has Sandy Chang received payments from drug or device companies?

CMS Open Payments shows $20 in general payments to Sandy Chang from 1 company from 2022 to 2022. The largest total came from Theratechnologies Inc.

How long has Sandy Chang been practicing?

Sandy Chang graduated from medical school in 2015, 11 years ago.

Does Sandy Chang do research?

Dmand AI links 2 publications to Sandy Chang.

What insurance does Sandy Chang accept?

Sandy Chang is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

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