Aimee C. Chang, MD
Glaucoma Specialist (Ophthalmology) Physician · Freedom, CA
Aimee C. Chang, MD is a glaucoma specialist (ophthalmology) physician with a practice address in Freedom, California, and NPI 1730689340, issued on Feb 20, 2018. Check the license (California A165520, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aimee C. Chang
- Credential
- MD
- Primary taxonomy
- Glaucoma Specialist (Ophthalmology) Physician 207WX0009X
- License numbers
- A165520 CA
291480 MA
Self-reported in NPPES; status is on the state search - Practice location
- 160 Green Valley RD Ste 202, Freedom, CA 95019
- Phone
- (831) 728-2020
- Enumerated
- Feb 20, 2018
- Record last updated
- Jun 20, 2024
- Medicare enrollment
- Enrolled (PECOS I20230822002434); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest glaucoma specialist (ophthalmology) physician records → All 70 in California → Look up another NPI →
Verify Aimee C. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A165520Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average glaucoma specialist (ophthalmology) physician in 2024
2,403 Medicare Part D claims for 666 beneficiaries, against an average of 3,060 among the 430 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Latanoprost694 claims
- Dorzolamide-Timolol289 claims
- Timolol Maleate254 claims
- Prednisolone Acetate200 claims
- Brimonidine Tartrate180 claims
- Rocklatan86 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.
Industry payments in 2024: $883.53
26 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 391 providers of this specialty with any payment received $5,284.60 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 one group practice
- Spectrum Eye Physicians A Medical CorporationSanta Cruz, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aimee C. Chang among 70 glaucoma specialist (ophthalmology) physician records in California
Aimee C. Chang, MD is one of 70 glaucoma specialist (ophthalmology) physician records with a practice address in California. 97% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 70% of them.
- NPI issued2018 · 70% of these records are older, 26% newer
- In a Medicare fileYes · 97% of these records are
- In the CMS Doctors and Clinicians fileYes · 93% of these records are
- Graduated2018 · median 2013 among the 65 with a school on file
- Record last updated2024 · 30% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0009X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Glaucoma Specialist (Ophthalmology) Physician providers in California
There are 70 glaucoma specialist (ophthalmology) physician records in California.
All 70 in California → Every provider in Freedom → Glaucoma Specialist (Ophthalmology) Physician nationwide →
The 8 glaucoma specialist (ophthalmology) physician records with the nearest ZIP codes
- Felise May Barte, MDSanta Clara, CA 950511467658062
- Ricky Cui, MDSanta Clara, CA 950511821592049
- Jason Bacharach, MDPetaluma, CA 949541639160112
- Dipali Apte, MD, PHDSan Jose, CA 951281528145455
- Sina Vahedi, M.D.Stockton, CA 952071679005219
- Frank Cao, MDStockton, CA 952101366703969
- Han Kim, M.D.Stockton, CA 952101760821375
- Yue Zhao, M.D.Berkeley, CA 947041851753354
Common questions
What is Aimee C. Chang, MD's NPI number?
Aimee C. Chang, MD's National Provider Identifier (NPI) is 1730689340, issued on Feb 20, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Aimee C. Chang, MD located?
The NPPES record lists a practice address at 160 Green Valley RD Ste 202, Freedom, CA, 95019. Phone: (831) 728-2020. Providers update this record themselves, so call before visiting.
How can I verify Aimee C. Chang, MD's license?
NPPES lists California license number A165520, 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 Aimee C. Chang, MD prescribe under Medicare Part D?
In 2024, Aimee C. Chang, MD had 2,403 Medicare Part D claims for 666 beneficiaries; the average among glaucoma specialist (ophthalmology) physician prescribers was 3,060. Part D covers Medicare prescriptions only.
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.