Sandy Chang
Infectious Disease Physician · Loma Linda, CA
Sandy Chang is an infectious disease physician with a practice address in Loma Linda, California, and NPI 1629465737, issued on Apr 16, 2015. Check the license (California A146846, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sandy Chang
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A146846 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11234 Anderson Street, Loma Linda, CA 92354
- Phone
- (310) 825-7375
- Enumerated
- Apr 16, 2015
- Record last updated
- Mar 6, 2024
- Medicare enrollment
- Enrolled (PECOS I20200526001216); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 11234 Anderson Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Adel Alset, MDStudent in an Organized Health Care Education/Training Program1184476970
- Ronald Anthony, NPFamily Nurse Practitioner1902363112
- Rahma Arafa, MDStudent in an Organized Health Care Education/Training Program1992400550
- Alanna Asgeirsson, MDStudent in an Organized Health Care Education/Training Program1306535372
Verify Sandy Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A146846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average infectious disease physician in 2024
165 Medicare Part D claims for 28 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Ceftazidime16 claims
- Fluconazole15 claims
- Biktarvy14 claims
- Sulfamethoxazole-Trimethoprim14 claims
- Methenamine Hippurate12 claims
- Rifampin11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Faculty Physicians And Surgeons OF LlusmLoma Linda, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sandy Chang among 1,119 infectious disease physician records in California
Sandy Chang is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 82% of them.
- NPI issued2015 · 82% of these records are older, 14% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2015 · median 2003 among the 735 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Loma Linda → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Jonathan Arcobello, M.D.Loma Linda, CA 923541396131983
- Ingrid Blomquist, M.D.Loma Linda, CA 923541285651646
- Kristin Carr, MDLoma Linda, CA 923541750768362
- James Couperus, M.D.Loma Linda, CA 923541801813977
- Richelle Guerrero-Wooley, M.DLoma Linda, CA 923541104255348
- Eugene Liu, MDLoma Linda, CA 923541700049376
- Jorge Robledo, MDLoma Linda, CA 923541467913640
- Daniel Rogstad, MDLoma Linda, CA 923541134358252
Common questions
What is Sandy Chang's NPI number?
Sandy Chang's National Provider Identifier (NPI) is 1629465737, issued on Apr 16, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Sandy Chang located?
The NPPES record lists a practice address at 11234 Anderson Street, Loma Linda, CA, 92354. Phone: (310) 825-7375. Providers update this record themselves, so call before visiting.
How can I verify Sandy Chang's license?
NPPES lists California license number A146846, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sandy Chang prescribe under Medicare Part D?
In 2024, Sandy Chang had 165 Medicare Part D claims for 28 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Sandy Chang's MIPS final score?
The 2023 MIPS final score is 85.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.