Irene Joan Chang, M.D.
Clinical Genetics (M.D.) Physician · San Francisco, CA
Irene Joan Chang, M.D. is a clinical genetics (m.d.) physician with a practice address in San Francisco, California, and NPI 1033539671, issued on Apr 22, 2014. Check the license (California A186751, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Irene Joan Chang
- Credential
- M.D.
- Primary taxonomy
- Clinical Genetics (M.D.) Physician 207SG0201X
- License numbers
- A186751 CA
60654898 WA
MD60654898 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1825 4TH St FL 6, San Francisco, CA 94143
- Phone
- (415) 476-2757
- Enumerated
- Apr 22, 2014
- Record last updated
- Aug 29, 2024
- Medicaid ID
- 1033539671 WA
- Medicare enrollment
- Enrolled (PECOS I20230831001013); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1825 4TH St FL 6
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shreya Agarwal, MDPediatric Hematology & Oncology Physician1841654944
- Hind Al Saif, MDClinical Genetics (M.D.) Physician1831403211
- Yu An, LCGCGenetic Counselor (M.S.)1972116937
- Austin Angelidakis, NPNurse Practitioner1326700287
- Karyn Austin, MD/PHDPediatric Cardiology Physician1639564370
- Serine Avagyan, MD, PHDPediatric Hematology & Oncology Physician1447540547
Verify Irene Joan Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A186751Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average clinical genetics (m.d.) physician in 2024
47 Medicare Part D claims, against an average of 59 among the 193 providers of this specialty who prescribed in Part D. Brand-name drugs were 85% of claims.
Most prescribed
- Dojolvi13 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): 74.5 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).
Industry payments in 2024: $38.00
1 payment: education; the largest payer was BioMarin Pharmaceutical Inc. The 306 providers of this specialty with any payment received $12,333.04 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Ucsf Pediatrics AssociatesSan Francisco, CA
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clinical Genetics (M.D.) Physician providers in California
There are 151 clinical genetics (m.d.) physician records in California.
Other clinical genetics (m.d.) physician records in California
- Sridevi Abboy, MDLos Angeles, CA1962688853
- Syed Ahmed, MDRiverside, CA1538217310
- Hind Al Saif, MDSan Francisco, CA1831403211
- Walla Al-Hertani, M.D.Orange, CA1104395656
- Alicia Aycinena, M.D.San Francisco, CA1548654908
- Ronald Bachman, MDOakland, CA1023197167
- James Bartley, MD, PH.D.Riverside, CA1184620411
- Daniah Beleford, MD, PHDSacramento, CA1841634805
- Joann Bergoffen, MDSan Jose, CA1861566465
- Sucheta Bhatt, M.D.Orange, CA1578606505
Common questions
What is Irene Joan Chang, M.D.'s NPI number?
Irene Joan Chang, M.D.'s National Provider Identifier (NPI) is 1033539671, issued on Apr 22, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Irene Joan Chang, M.D. located?
The NPPES record lists a practice address at 1825 4TH St FL 6, San Francisco, CA, 94143. Phone: (415) 476-2757. Providers update this record themselves, so call before visiting.
How can I verify Irene Joan Chang, M.D.'s license?
NPPES lists California license number A186751, 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 Irene Joan Chang, M.D. prescribe under Medicare Part D?
In 2024, Irene Joan Chang, M.D. had 47 Medicare Part D claims; the average among clinical genetics (m.d.) physician prescribers was 59. Part D covers Medicare prescriptions only.
What is Irene Joan Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.5 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.