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Dr. Annie Chan, MD
NPI1346420221PAC ID2365593928
- Medicare services, 2020
- 28
- Part D claims, 2024
- 87
- Publications
- 12
- Clinical trials
- 1
- Industry payments
- $611
- Practice address
- 710 Lawrence Expy, Santa Clara, CA 95051
- Practice phone
- Call (408) 851-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Santa Clara, California
Find Dr. Chan's professional email, personal email and mobile number
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Dr. Annie Chan is an ophthalmologist in Santa Clara, California
Dr. Chan practices at Permanente Medical Group Inc in Santa Clara, California.
Dr. Chan's NPI, 1346420221, was assigned on November 8, 2007. Dr. Chan graduated from Tufts University School Of Medicine in 2005. Dr. Chan holds California license A96575.
NPI and contact details
- NPI
- 1346420221NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365593928
- NPI enumeration date
- November 8, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (408) 851-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Annie Chan practices at Permanente Medical Group Inc in Santa Clara, California
Dr. Chan's primary practice is Permanente Medical Group Inc, at 710 Lawrence Expy, Santa Clara, CA 95051 in Santa Clara County. The practice phone is (408) 851-1000.
- Permanente Medical Group Inc710 Lawrence Expy, Santa Clara, CA 95051 · Santa Clara CountyPhone(408) 851-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Annie Chan is affiliated with 3 sites of care and 3 medical groups
Dr. Chan's primary practice is Permanente Medical Group Inc in Santa Clara, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Chan to 2 more group practices and clinics and 2 medical groups, each named with a free account.
Permanente Medical Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Annie Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Annie Chan is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Chan is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Chan is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Clinical focus
Dmand AI lists age-related macular degeneration among the conditions Dr. Chan treats.
Ophthalmologists near Dr. Chan
Counts of ophthalmologists 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
Dr. Annie Chan billed Medicare for 28 services in 2020
CMS data shows 28 Medicare services from Dr. Chan across 1 procedure code in 2020. Medicare paid $2,304 for them. Every service was in an office.
Medicare services, 202028
Paid by Medicare$2,304
Procedure codes1
Dr. Chan's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Surgery
- 2019: 02020: 28
- Tests and treatments
- 2019: 282020: 0100%
Dr. Chan compared with the California median for ophthalmologists, 2020
- Dr. Chan
- California median
- Medicare services
- 28vs 1,07997% below
- Part D claims
- 39vs 61894% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Chan's most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Chan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chan and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Annie Chan's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Chan's median patient age at 69, with 50% women.
Dr. Chan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women50%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Annie Chan wrote 87 Medicare Part D claims in 2024
In 2024, Dr. Chan wrote 87 Medicare Part D claims for 33 patients. 77% of them were for generic drugs. CMS names the drug for 39 of them, across 3 drugs with 11 or more claims each, at $1,342 in total drug cost. In 2023, CMS named 42 claims across 3 drugs.
Part D claims, 202487
Drugs named by CMS3
Total drug cost$1,342
Part D patients33
Dr. Chan's Part D claims by kind of drug, 2024
- Generic67 claims77%
- Brand-name20 claims23%
Dr. Chan'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 422024: 397%
Drugs named by CMS: 3 in 2024, 3 in 2023.
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
How Dr. Annie Chan takes part in Medicare
Dr. Chan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Annie Chan has 12 publications on record
Dmand AI links 12 papers to Dr. Chan, published from 2010 to 2013. 2011 was the busiest year, with 3. The most frequent topics are Visual Acuity, Fundus Oculi and Keratomileusis, Laser In Situ. Dr. Chan has published most often in Clin Ophthalmol. Dr. Chan's most frequent co-authors are Mark Blumenkranz, MD, Theodore Leng, MD and Darius Mohammad Moshfeghi, MD.
Papers12
Years published2010 to 2013
Dr. Chan's papers by year, 2010 to 2013
Topics Dr. Chan writes about most
- Visual Acuity
- Fundus Oculi
- Keratomileusis, Laser In Situ
- Lasers, Excimer
- Myopia
- Vitrectomy
- Vitreous Body
Dr. Chan's most frequent co-authors
- Mark Blumenkranz, MD4 shared papers
- Theodore Leng, MD3 shared papers
- Darius Mohammad Moshfeghi, MD3 shared papers
Recent publications by Dr. Chan
Ophthalmology
AstigmatismGlareKeratomileusis, Laser In Situ
See who Dr. Chan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chan works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Annie Chan has worked on 1 clinical trial
Dmand AI links Dr. Chan to 1 clinical trial. Conditions studied include Retinopathy of Prematurity and Infant, Premature, Diseases.
Conditions in Dr. Chan's trials
- Retinopathy of Prematurity
- Infant, Premature, Diseases
Investigators on the most trials with Dr. Chan
Recent clinical trials with Dr. Chan
A Scan Ultrasonography in the Evaluation of Retinopathy of Prematurity (opens in a new tab)
Terminated
Retinopathy of PrematurityInfant, Premature, Diseases
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Annie Chan received $611 in industry payments from 2016 to 2025
CMS Open Payments shows 9 general payments to Dr. Chan from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. TissueTech, Inc. paid the most, $268.
General payments to Dr. Chan by program year, 2016 to 2025
Companies that paid Dr. Chan the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Annie Chan graduated from Tufts University School Of Medicine
Dr. Chan graduated from Tufts University School Of Medicine in 2005.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Annie Chan accepts plans from 3 insurance carriers
Dr. Chan is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Kaiser Permanente and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Chan accepts, by number of carriers
- HMO2
- POS2
- EPO1
- Medicare1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Annie Chan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Annie Chan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Annie Chan's NPI number?
Dr. Annie Chan's NPI number is 1346420221. It was assigned on November 8, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Annie Chan?
Dr. Annie Chan is an ophthalmologist in Santa Clara, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Annie Chan practice?
Dr. Chan practices at 710 Lawrence Expy, Santa Clara, CA 95051. Dr. Chan's primary practice is Permanente Medical Group Inc in Santa Clara, California. Dmand AI also links Dr. Chan to 2 group practices and clinics and 2 medical groups.
What is Dr. Annie Chan's office phone number?
The practice phone on file for Dr. Chan is (408) 851-1000.
What is Dr. Annie Chan's medical license number?
Dr. Chan holds California license A96575.
What medical group is Dr. Annie Chan part of?
Dr. Chan is linked to The Permanente Medical Group, Inc. Dmand AI links Dr. Chan to 2 more medical groups.
Does Dr. Annie Chan accept Medicare?
Yes. CMS data shows Dr. Chan billed Medicare for 28 services in 2020, and Dr. Chan accepts Medicare assignment.
Is Dr. Annie Chan board certified?
Yes. Dr. Chan is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Annie Chan bill to Medicare?
In 2020, Dr. Chan's most billed Medicare services were surgery: eye (67028).
Where did Dr. Annie Chan go to medical school?
Dr. Chan graduated from Tufts University School Of Medicine in 2005.
Show 6 more questionsShow fewer questions
What drugs does Dr. Annie Chan prescribe most?
In 2024 Medicare Part D data, Dr. Chan's most prescribed drugs by claims were Prednisolone Acetate, Latanoprost and Diclofenac Sodium.
Has Dr. Annie Chan received payments from drug or device companies?
CMS Open Payments shows $611 in general payments to Dr. Chan from 5 companies from 2016 to 2025. The largest total came from TissueTech, Inc.
How long has Dr. Annie Chan been practicing?
Dr. Chan graduated from medical school in 2005, 21 years ago.
Does Dr. Annie Chan do research?
Dmand AI links 12 publications to Dr. Chan, published from 2010 to 2013. Dr. Chan has worked on 1 clinical trial.
Who does Dr. Annie Chan publish with?
Dr. Chan's most frequent co-authors are Mark Blumenkranz, MD (4 shared papers), Theodore Leng, MD (3 shared papers) and Darius Mohammad Moshfeghi, MD (3 shared papers).
What insurance does Dr. Annie Chan accept?
Dr. Chan is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Kaiser Permanente and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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