Dr. David Bruce Mark, MD
- Medicare services, 2024
- 622
- Medicare patients, 2024
- 400
- Part D claims, 2024
- 456
- Publications
- 1
- Industry payments
- $623
- Practice address
- 1010 W Fremont Ave, Sunnyvale, CA 94087
- Practice phone
- Call (408) 739-6200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Silicon Valley Eye Physicians
Eye care practice · Sunnyvale, California
Find Dr. Mark'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 Bruce Mark is an ophthalmologist in Sunnyvale, California
Dr. Mark practices at Silicon Valley Eye Physicians in Sunnyvale, California.
Dr. Mark's NPI, 1912900218, was assigned on May 31, 2005. Dr. Mark graduated from Stanford University School Of Medicine in 1976. Dr. Mark holds California license G35305.
- NPI
- 1912900218NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840282539
- NPI enumeration date
- May 31, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (408) 739-6200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Bruce Mark practices at Silicon Valley Eye Physicians in Sunnyvale, California
Dr. Mark's primary practice is Silicon Valley Eye Physicians, at 1010 W Fremont Ave, Sunnyvale, CA 94087. The practice phone is (408) 739-6200.
- Silicon Valley Eye Physicians1010 W Fremont Ave, Sunnyvale, CA 94087Phone(408) 739-6200
Source: Dmand AI Affiliation Data
Dr. David Bruce Mark is affiliated with 3 sites of care and 3 medical groups
Dr. Mark's primary practice is Silicon Valley Eye Physicians in Sunnyvale, California. Dmand AI also links Dr. Mark to 3 medical groups and 2 group practices and clinics, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David Bruce Mark's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mark practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Silicon Valley Eye Physicians | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Bruce Mark is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Mark's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Mark is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Mark is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, conjunctivitis, dry eye, eye infection or inflammation, eyelid inflammation and glaucoma among the conditions Dr. Mark treats.
Ophthalmologists near Dr. Mark
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 Bruce Mark billed Medicare for 622 services in 2024
CMS data shows 622 Medicare services from Dr. Mark across 8 procedure codes in 2024, for 400 Medicare patients. Medicare paid $58,056 for them.
Dr. Mark's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 7042024: 54423%
- Office and hospital visits
- 2023: 182024: 66267%
- Surgery
- 2023: 212024: 1243%
Where Dr. Mark's Medicare services took place, 2024
- In an office61098%
- In a facility122%
Dr. Mark compared with the California median for ophthalmologists, 2024
- Dr. Mark
- California median
- Medicare services
- 622vs 1,07942% below
- Medicare patients
- 400vs 421Close to median
- Part D claims
- 380vs 61839% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Mark's most billed Medicare procedure codes, 2024
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. Mark?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mark and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Bruce Mark treated 400 Medicare patients in 2024, average age 79
CMS counts 400 Medicare patients who saw Dr. Mark in 2024. The largest group is 75 to 84, with 171 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.01, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mark's median patient age at 77, with 54% women.
Dr. Mark's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Mark's Medicare patients by sex, 2024
- Women24561%
- Men15539%
Chronic conditions among Dr. Mark's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis33%
- Osteoporosis27%
- Ischemic heart disease26%
- Diabetes25%
- Cancer19%
- Chronic kidney disease17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mark's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Bruce Mark wrote 456 Medicare Part D claims in 2024
In 2024, Dr. Mark wrote 456 Medicare Part D claims for 129 patients. 51% of them were for generic drugs. CMS names the drug for 380 of them, across 8 drugs with 11 or more claims each, at $8,633 in total drug cost. In 2023, CMS named 346 claims across 7 drugs.
Dr. Mark's Part D claims by kind of drug, 2024
- Generic232 claims51%
- Brand-name224 claims49%
Dr. Mark'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: 3462024: 38010%
Drugs named by CMS: 8 in 2024, 7 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
Dr. David Bruce Mark ranks in the 43rd percentile for cataract surgery in Medicare
Dr. Mark accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 19 procedures of cataract surgery by Dr. Mark, more than 43% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Mark ranks in Medicare procedure volume
- Cataract surgery
- 43rd percentile19 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. David Bruce Mark has 1 publication on record
Dmand AI links 1 paper to Dr. Mark. Dr. Mark's most frequent co-authors are Kristin Emiko Hirabayashi, MD and Charles Chia-Hong Lin, MD.
Dr. Mark's most frequent co-authors
Recent publications by Dr. Mark
See who Dr. Mark researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mark 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 Bruce Mark received $623 in industry payments from 2016 to 2025
CMS Open Payments shows 32 general payments to Dr. Mark from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Shire North American Group Inc paid the most, $411.
General payments to Dr. Mark by program year, 2016 to 2025
General payments to Dr. Mark by kind, 2016 to 2025
- Food and beverage$56891%
- Education$386%
- Gifts$173%
Companies that paid Dr. Mark 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. David Bruce Mark has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Mark, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Mark
- 2013
- CMS Stage 1 EHR
- Undated
- AAO Fellow
Source: Dmand AI Professional Profile Data
Dr. David Bruce Mark graduated from Stanford University School Of Medicine
Dr. Mark graduated from Stanford University School Of Medicine in 1976. Dr. Mark is a member of AAO.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. David Bruce Mark accepts plans from 11 insurance carriers
Dr. Mark is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- +3 more carriersWith a free account
Plan types Dr. Mark accepts, by number of carriers
- Medicare9
- PPO7
- POS5
- EPO3
- HMO3
Source: Dmand AI Insurance Network Data
Sources for Dr. David Bruce Mark'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 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| 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. David Bruce Mark
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 Bruce Mark's NPI number?
Dr. David Bruce Mark's NPI number is 1912900218. It was assigned on May 31, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. David Bruce Mark?
Dr. David Bruce Mark is an ophthalmologist in Sunnyvale, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. David Bruce Mark practice?
Dr. Mark practices at 1010 W Fremont Ave, Sunnyvale, CA 94087. Dr. Mark's primary practice is Silicon Valley Eye Physicians in Sunnyvale, California. Dmand AI also links Dr. Mark to 3 medical groups and 2 group practices and clinics.
What is Dr. David Bruce Mark's office phone number?
The practice phone on file for Dr. Mark is (408) 739-6200.
What is Dr. David Bruce Mark's medical license number?
Dr. Mark holds California license G35305.
Does Dr. David Bruce Mark accept Medicare?
Yes. CMS data shows Dr. Mark billed Medicare for 622 services in 2024, and Dr. Mark accepts Medicare assignment.
How many Medicare patients does Dr. David Bruce Mark see?
CMS counts 400 Medicare patients who saw Dr. Mark in 2024, with an average age of 79.
Is Dr. David Bruce Mark board certified?
Yes. Dr. Mark is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. David Bruce Mark bill to Medicare?
In 2024, Dr. Mark's most billed Medicare services were eye exam or test (92014), eye exam or test (92012) and office visit, established patient (99213).
Where did Dr. David Bruce Mark go to medical school?
Dr. Mark graduated from Stanford University School Of Medicine in 1976.
Show 6 more questionsShow fewer questions
What drugs does Dr. David Bruce Mark prescribe most?
In 2024 Medicare Part D data, Dr. Mark's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Tobramycin-Dexamethasone.
Has Dr. David Bruce Mark received payments from drug or device companies?
CMS Open Payments shows $623 in general payments to Dr. Mark from 10 companies from 2016 to 2025. The largest total came from Shire North American Group Inc.
How long has Dr. David Bruce Mark been practicing?
Dr. Mark graduated from medical school in 1976, 50 years ago.
Does Dr. David Bruce Mark do research?
Dmand AI links 1 publication to Dr. Mark.
Who does Dr. David Bruce Mark publish with?
Dr. Mark's most frequent co-authors are Kristin Emiko Hirabayashi, MD (1 shared paper) and Charles Chia-Hong Lin, MD (1 shared paper).
What insurance does Dr. David Bruce Mark accept?
Dr. Mark is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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