Dr. David Gu, MD
- Part D claims, 2024
- 174
- Publications
- 7
- Hospital affiliations
- 2
- Industry payments
- $1,087
- Medical group
- 1
- Practice address
- 975 Sereno Dr, Vallejo, CA 94589
- Practice phone
- Call (707) 651-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gu's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. David Gu is an ophthalmologist in Vallejo, California
Dr. Gu practices at Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente.
Dr. Gu's NPI, 1730634908, was assigned on August 17, 2016. Dr. Gu graduated from Feinberg School of Medicine in 2020. Dr. Gu holds California license A195736.
- NPI
- 1730634908NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375966435
- NPI enumeration date
- August 17, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 651-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Gu practices at Vallejo Medical Center in Vallejo, California
Dr. Gu's primary practice is Vallejo Medical Center, at 975 Sereno Dr, Vallejo, CA 94589 in Solano County. The practice phone is (707) 651-1000.
- Vallejo Medical Center975 Sereno Dr, Vallejo, CA 94589 · Solano CountyPhone(707) 651-1000
Source: Dmand AI Affiliation Data
Dr. David Gu is affiliated with 4 sites of care and 1 medical group
Dr. Gu's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. Dr. Gu is also affiliated with Vacaville Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Gu to 1 more home health agency and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Gu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gu practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vallejo Medical Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Gu is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Gu's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dmand AI has Dr. Gu's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Illinois license
Ophthalmologists near Dr. Gu
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. David Gu's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Gu's median patient age at 64, with 63% women.
Dr. Gu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women63%
- Men36%
Source: Dmand AI Patient Panel Data
Dr. David Gu wrote 174 Medicare Part D claims in 2024
In 2024, Dr. Gu wrote 174 Medicare Part D claims for 109 patients. 89% of them were for generic drugs. CMS names the drug for 105 of them, across 3 drugs with 11 or more claims each, at $1,685 in total drug cost. In 2023, CMS named 16 claims across 1 drug.
Dr. Gu's Part D claims by kind of drug, 2024
- Generic155 claims89%
- Brand-name19 claims11%
Dr. Gu'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: 162024: 105556%
Drugs named by CMS: 3 in 2024, 1 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. David Gu takes part in Medicare
Dr. Gu 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. David Gu has 7 publications on record
Dmand AI links 7 papers to Dr. Gu, published from 2018 to 2024. 2020 was the busiest year, with 3. Dr. Gu has published most often in Am J Ophthalmol Case Rep. Dr. Gu's most frequent co-authors are Surendra Basti, MD, Paul J. Bryar, MD and Robson Capasso, MD.
Dr. Gu's papers by year, 2018 to 2024
Dr. Gu's most frequent co-authors
Recent publications by Dr. Gu
Echocardiography
Ophthalmic Epidemiol
See who Dr. Gu researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gu 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. David Gu received $1,087 in industry payments from 2020 to 2024
CMS Open Payments shows 12 general payments to Dr. Gu from 4 drug and device companies from 2020 to 2024. Food and beverage make up the largest share, 91% of the total. Alcon Laboratories Inc paid the most, $466.
General payments to Dr. Gu by program year, 2020 to 2024
General payments to Dr. Gu by kind, 2020 to 2024
- Food and beverage$98791%
- Education$1009%
Companies that paid Dr. Gu the most, 2020 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Gu graduated from Feinberg School of Medicine
Dr. Gu graduated from Feinberg School of Medicine in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. David Gu accepts plans from 2 insurance carriers
Dr. Gu 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. Gu accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. David Gu'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. David Gu
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. David Gu's NPI number?
Dr. David Gu's NPI number is 1730634908. It was assigned on August 17, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. David Gu?
Dr. David Gu is an ophthalmologist in Vallejo, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. David Gu practice?
Dr. Gu practices at 975 Sereno Dr, Vallejo, CA 94589. Dr. Gu's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. Dmand AI also links Dr. Gu to 1 home health agency and 1 hospice.
What is Dr. David Gu's office phone number?
The practice phone on file for Dr. Gu is (707) 651-1000.
What is Dr. David Gu's medical license number?
Dr. Gu holds California license A195736, one of the licenses on file in 2 states.
Which states has Dr. David Gu been licensed in?
Dmand AI has state licenses on file for Dr. Gu in California (2024 to 2026) and Illinois (2020 to 2024).
Which hospitals is Dr. David Gu affiliated with?
Dr. Gu practices at Vallejo Medical Center in Vallejo, California. Dr. Gu is also affiliated with Vacaville Medical Center.
What medical group is Dr. David Gu part of?
Dr. Gu is linked to The Permanente Medical Group, Inc.
Does Dr. David Gu accept Medicare?
Yes. CMS lists Dr. Gu as accepting Medicare assignment.
Where did Dr. David Gu go to medical school?
Dr. Gu graduated from Feinberg School of Medicine in 2020.
Show 6 more questionsShow fewer questions
What drugs does Dr. David Gu prescribe most?
In 2024 Medicare Part D data, Dr. Gu's most prescribed drugs by claims were Erythromycin, Latanoprost and Prednisolone Acetate.
Has Dr. David Gu received payments from drug or device companies?
CMS Open Payments shows $1,087 in general payments to Dr. Gu from 4 companies from 2020 to 2024. The largest total came from Alcon Laboratories Inc.
How long has Dr. David Gu been practicing?
Dr. Gu graduated from medical school in 2020, 6 years ago.
Does Dr. David Gu do research?
Dmand AI links 7 publications to Dr. Gu, published from 2018 to 2024.
Who does Dr. David Gu publish with?
Dr. Gu's most frequent co-authors are Surendra Basti, MD (1 shared paper), Paul J. Bryar, MD (1 shared paper) and Robson Capasso, MD (1 shared paper).
What insurance does Dr. David Gu accept?
Dr. Gu 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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