Dr. David Bruce Mark, MD

  • Sunnyvale, CA
  • Ophthalmologist
NPI1912900218PAC ID0840282539
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
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Mobile number
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Social profiles

Primary practice

Silicon Valley Eye Physicians

Eye care practice · Sunnyvale, California

See all 6 affiliations

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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 and contact details
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
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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 Physicians
    1010 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.

Silicon Valley Eye PhysiciansEye care practice · Sunnyvale, CaliforniaPrimary
3 medical groupsNames with a free account2 group practices and clinicsNames with a free account
See all 6 affiliations for Dr. Mark

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.

EHR by site
SiteEHR vendor and product
Silicon Valley Eye PhysiciansAvailable with a free account
+2 more sites and 3 medical groupsAvailable 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, CaliforniaPrimaryLicense G35305 · 1977 to 2027 · taxonomy 207W00000X

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.

Medicare services, 2024622
Medicare patients400
Paid by Medicare$58,056
Procedure codes8

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.

See all procedures by Dr. Mark

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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.

Medicare patients, 2024400
Average age79
Average risk score1.01
Also on Medicaid6%

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

  1. High cholesterol75%
  2. High blood pressure67%
  3. Arthritis33%
  4. Osteoporosis27%
  5. Ischemic heart disease26%
  6. Diabetes25%
  7. Cancer19%
  8. 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.

Part D claims, 2024456
Drugs named by CMS8
Total drug cost$8,633
Part D patients129

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.

See all prescribing by Dr. Mark

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.

Papers1

Dr. Mark's most frequent co-authors

Recent publications by Dr. Mark

See all 1 publications and co-authors

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.

How network discovery works

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

$623in total
  • 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.

See all payments to Dr. Mark

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

  1. 2013
    • CMS Stage 1 EHR
  2. 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.

  1. Medical schoolStanford University School Of Medicine
  2. Board certified in ophthalmologyAmerican Board of 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

  1. Medicare9
  2. PPO7
  3. POS5
  4. EPO3
  5. HMO3

Source: Dmand AI Insurance Network Data

Sources for Dr. David Bruce Mark's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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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