Angela An-Chi Chang, M.D.
Otolaryngology Physician · La Jolla, CA
Angela An-Chi Chang, M.D. is an otolaryngology physician with a practice address in La Jolla, California, and NPI 1730382318, issued on Jun 8, 2007. Check the license (California A100380, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Angela An-Chi Chang
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- A100380 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9834 Genesee Ave, La Jolla, CA 92037
- Phone
- (858) 909-0770
- Enumerated
- Jun 8, 2007
- Record last updated
- Oct 13, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (858) 909-0880
- Medicare enrollment
- Enrolled (PECOS I20110809000124); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
Also registered at 9834 Genesee Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Timothy Bilash, M.D., M.S.Obstetrics & Gynecology Physician1437189545
- Joseph Blatt, MDClinical Cardiac Electrophysiology Physician1235242165
- Mark Boiskin, M.D.Nephrology Physician1437154143
- Douglas Bolitho, M.D.Plastic Surgery Physician1740488196
Verify Angela An-Chi Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A100380Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average otolaryngology physician in 2024
694 Medicare Part D claims for 276 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims. 36 claims were for opioids.
Most prescribed
- Ipratropium Bromide247 claims
- Fluticasone Propionate98 claims
- Azelastine Hcl74 claims
- Fluocinolone Acetonide Oil36 claims
- Hydrocodone-Acetaminophen36 claims
- Amoxicillin-Clavulanate Potass34 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 MIPS final score for 2023 (Medicare payment program): 79.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $154.48
1 payment: food and beverage; the largest payer was Acera Surgical, Inc. The 6,429 providers of this specialty with any payment received $1,922.50 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.
Angela An-Chi Chang among 1,212 otolaryngology physician records in California
Angela An-Chi Chang, M.D. is one of 1,212 otolaryngology physician records with a practice address in California. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 42% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2005 · median 2004 among the 818 with a school on file
- Record last updated2011 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in California
There are 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in La Jolla → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Thomas Arnell, MDLa Jolla, CA 920371649807397
- Anna Bareiss, MDLa Jolla, CA 920371508398629
- Christopher Bergeron, M.D.La Jolla, CA 920371508851775
- Ryan Crane, M.D.La Jolla, CA 920371174963532
- Brendan Gaylis, M.D.La Jolla, CA 920371184654642
- Mahmood Mahdavi, M.D.La Jolla, CA 920371033140934
- Carolyn Montes, MDLa Jolla, CA 920371215499769
- Christine Morton, MDLa Jolla, CA 920371851589410
Common questions
What is Angela An-Chi Chang, M.D.'s NPI number?
Angela An-Chi Chang, M.D.'s National Provider Identifier (NPI) is 1730382318, issued on Jun 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Angela An-Chi Chang, M.D. located?
The NPPES record lists a practice address at 9834 Genesee Ave, La Jolla, CA, 92037. Phone: (858) 909-0770. Providers update this record themselves, so call before visiting.
How can I verify Angela An-Chi Chang, M.D.'s license?
NPPES lists California license number A100380, 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 Angela An-Chi Chang, M.D. prescribe under Medicare Part D?
In 2024, Angela An-Chi Chang, M.D. had 694 Medicare Part D claims for 276 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Angela An-Chi Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.4 of 100. 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.