Dr. Hang T. Ly, MD
- Part D claims, 2024
- 1,590
- Industry payments
- $301
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 2
- 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. Ly's professional email, personal email and mobile number
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Dr. Hang T. Ly is an ophthalmologist in Santa Clara, California
Dr. Ly practices at Permanente Medical Group Inc in Santa Clara, California.
Dr. Ly's NPI, 1265519102, was assigned on October 31, 2006. Dr. Ly graduated from University of Maryland School of Medicine - Baltimore in 1997. Dr. Ly holds California license A73970.
- NPI
- 1265519102NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486836897
- NPI enumeration date
- October 31, 2006
- 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
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hang T. Ly practices at Permanente Medical Group Inc in Santa Clara, California
Dr. Ly'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. Hang T. Ly is affiliated with 2 sites of care and 1 medical group
Dr. Ly'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. Ly to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Hang T. Ly's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ly practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Hang T. Ly is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Ly's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Ly is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Ly's licenses on file in 3 states: California, New York and Pennsylvania.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- New York license
- Pennsylvania license
Clinical focus
Dmand AI lists cataract surgery with lens implant and glaucoma among the conditions Dr. Ly treats.
Ophthalmologists near Dr. Ly
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. Hang T. Ly's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Ly's median patient age at 73, with 60% women.
Dr. Ly's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women60%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. Hang T. Ly wrote 1,590 Medicare Part D claims in 2024
In 2024, Dr. Ly wrote 1,590 Medicare Part D claims for 430 patients. 82% of them were for generic drugs. CMS names the drug for 1,513 of them, across 14 drugs with 11 or more claims each, at $59,598 in total drug cost. In 2023, CMS named 1,576 claims across 15 drugs.
Dr. Ly's Part D claims by kind of drug, 2024
- Generic1,297 claims82%
- Brand-name293 claims18%
Dr. Ly'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.
Drug classes CMS tracks in Dr. Ly's Part D claims, 2024
- Antibiotics1%12 of 1,590 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,5762024: 1,5134%
Drugs named by CMS: 14 in 2024, 15 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. Hang T. Ly takes part in Medicare
Dr. Ly accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Hang T. Ly received $301 in industry payments from 2016 to 2021
CMS Open Payments shows 3 general payments to Dr. Ly from 3 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Surgical Vision, Inc. paid the most, $192.
General payments to Dr. Ly by program year, 2016 to 2021
Companies that paid Dr. Ly the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Hang T. Ly has 1 award and honors on record
Dmand AI lists 1 award for Dr. Ly, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Ly
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Hang T. Ly graduated from University of Maryland School of Medicine - Baltimore
Dr. Ly graduated from University of Maryland School of Medicine - Baltimore in 1997.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Hang T. Ly accepts plans from 2 insurance carriers
Dr. Ly is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Ly accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Hang T. Ly'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 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Hang T. Ly
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. Hang T. Ly's NPI number?
Dr. Hang T. Ly's NPI number is 1265519102. It was assigned on October 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Hang T. Ly?
Dr. Hang T. Ly is an ophthalmologist in Santa Clara, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Hang T. Ly practice?
Dr. Ly practices at 710 Lawrence Expy, Santa Clara, CA 95051. Dr. Ly's primary practice is Permanente Medical Group Inc in Santa Clara, California. Dmand AI also links Dr. Ly to 1 group practice or clinic.
What is Dr. Hang T. Ly's office phone number?
The practice phone on file for Dr. Ly is (408) 851-1000.
What is Dr. Hang T. Ly's medical license number?
Dr. Ly holds California license A73970, one of the licenses on file in 3 states.
Which states has Dr. Hang T. Ly been licensed in?
Dmand AI has state licenses on file for Dr. Ly in California (2001 to 2026), New York (2001 to 2004) and Pennsylvania (1998 to 1999).
What medical group is Dr. Hang T. Ly part of?
Dr. Ly is linked to The Permanente Medical Group, Inc.
Does Dr. Hang T. Ly accept Medicare?
Yes. CMS lists Dr. Ly as accepting Medicare assignment.
Is Dr. Hang T. Ly board certified?
Yes. Dr. Ly is board certified in ophthalmology by the American Board of Ophthalmology.
Where did Dr. Hang T. Ly go to medical school?
Dr. Ly graduated from University of Maryland School of Medicine - Baltimore in 1997.
Show 4 more questionsShow fewer questions
What drugs does Dr. Hang T. Ly prescribe most?
In 2024 Medicare Part D data, Dr. Ly's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Brimonidine Tartrate.
Has Dr. Hang T. Ly received payments from drug or device companies?
CMS Open Payments shows $301 in general payments to Dr. Ly from 3 companies from 2016 to 2021. The largest total came from Johnson & Johnson Surgical Vision, Inc.
How long has Dr. Hang T. Ly been practicing?
Dr. Ly graduated from medical school in 1997, 29 years ago.
What insurance does Dr. Hang T. Ly accept?
Dr. Ly is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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