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Dr. Ronald A. Schachar, MD

  • CA
  • Ophthalmologist
NPI1639457500
Publications
89
Industry payments
$226
State licenses
4
Year NPI issued
2011
Practice address
CA
Professional email
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Personal email
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Mobile number
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Social profiles

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Dr. Ronald A. Schachar is an ophthalmologist in California

Dr. Schachar practices in California.

Dr. Schachar's NPI, 1639457500, was assigned on July 26, 2011. Dr. Schachar graduated from SUNY Downstate Health Sciences University in 1967. Dr. Schachar's California license number on file is G18587.

NPI and contact details
NPI
1639457500NPI Registry (opens in a new tab)
NPI enumeration date
July 26, 2011
NPI status
Active
Professional email
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Personal email
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Mobile number
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Sex
Male
Medical school graduation
1967

Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data

Dmand AI tracks the EHR system at Dr. Ronald A. Schachar's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Schachar practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Dr. Schachar's practiceAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Ronald A. Schachar is one of 2,621 ophthalmologists in California

Ophthalmology is Dr. Schachar's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Schachar is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Schachar's licenses on file in 4 states: California, Illinois, New York and Texas.

Specialties and state licenses

  • Ophthalmology, CaliforniaPrimaryLicense G18587 · 1970 to 2025 · taxonomy 207W00000X
  • Illinois licenseSince 1970
  • New York licenseSince 1970
  • Texas licenseLicense E5612 · 1976 to 2026

Ophthalmologists near Dr. Schachar

Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.

2,621ophthalmologists in California

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Ronald A. Schachar's patients have a median age of 70

Across all payers, Dmand AI patient panel data puts Dr. Schachar's median patient age at 70, with 50% women.

Dr. Schachar's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women50%
  • Men50%

Source: Dmand AI Patient Panel Data

Dr. Ronald A. Schachar has 89 publications on record

Dmand AI links 89 papers to Dr. Schachar, published from 2012 to 2025. 2012 was the busiest year, with 3. The most frequent topics are Lens, Crystalline, Accommodation, Ocular and Visual Acuity. Dr. Schachar has published most often in Invest Ophthalmol Vis Sci. Dr. Schachar's most frequent co-authors are Ira Hyman Schachar, MD, Brian B. Berger, MD and Quan Dong Nguyen, MD.

Papers89
Years published2012 to 2025

Dr. Schachar's papers by year, 2012 to 2025

Topics Dr. Schachar writes about most

  • Lens, Crystalline
  • Accommodation, Ocular
  • Visual Acuity
  • Ciliary Body
  • Double-Blind Method
  • Intraocular Pressure
  • Intravitreal Injections
  • Latanoprost

Dr. Schachar's most frequent co-authors

Recent publications by Dr. Schachar

See all 89 publications and co-authors

See who Dr. Schachar researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Schachar 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. Ronald A. Schachar received $226 in industry payments from 2016 to 2017

CMS Open Payments shows 3 general payments to Dr. Schachar from 3 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 95% of the total. Regeneron Pharmaceuticals, Inc. paid the most, $121.

General payments to Dr. Schachar by program year, 2016 to 2017

General payments to Dr. Schachar by kind, 2016 to 2017

$226in total
  • Food and beverage$21595%
  • Education$105%

Companies that paid Dr. Schachar the most, 2016 to 2017

Share is of all general payments to this clinician.

See all payments to Dr. Schachar

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Ronald A. Schachar has 1 award and honors on record

Dmand AI lists 1 award for Dr. Schachar.

Awards and honors for Dr. Schachar

  1. Undated
    • ACS Fellow

Source: Dmand AI Professional Profile Data

Dr. Ronald A. Schachar graduated from SUNY Downstate Health Sciences University

Dr. Schachar graduated from SUNY Downstate Health Sciences University in 1967. Dr. Schachar is a member of ACS.

  1. Medical schoolSUNY Downstate Health Sciences University
  2. Board certified in ophthalmologyAmerican Board of Ophthalmology

Source: Dmand AI Professional Profile Data

Sources for Dr. Ronald A. Schachar'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
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
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
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. Ronald A. Schachar

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. Ronald A. Schachar's NPI number?

Dr. Ronald A. Schachar's NPI number is 1639457500. It was assigned on July 26, 2011, and it is active in the NPI Registry.

What kind of doctor is Dr. Ronald A. Schachar?

Dr. Ronald A. Schachar is an ophthalmologist in California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).

What is Dr. Ronald A. Schachar's medical license number?

Dr. Schachar's California license number on file is G18587, one of the licenses on file in 4 states.

Which states has Dr. Ronald A. Schachar been licensed in?

Dmand AI has state licenses on file for Dr. Schachar in California (1970 to 2025), Illinois (since 1970), New York (since 1970) and Texas (1976 to 2026).

Is Dr. Ronald A. Schachar board certified?

Yes. Dr. Schachar is board certified in ophthalmology by the American Board of Ophthalmology.

Where did Dr. Ronald A. Schachar go to medical school?

Dr. Schachar graduated from SUNY Downstate Health Sciences University in 1967.

Has Dr. Ronald A. Schachar received payments from drug or device companies?

CMS Open Payments shows $226 in general payments to Dr. Schachar from 3 companies from 2016 to 2017. The largest total came from Regeneron Pharmaceuticals, Inc.

How long has Dr. Ronald A. Schachar been practicing?

Dr. Schachar graduated from medical school in 1967, 59 years ago.

Does Dr. Ronald A. Schachar do research?

Dmand AI links 89 publications to Dr. Schachar, published from 2012 to 2025.

Who does Dr. Ronald A. Schachar publish with?

Dr. Schachar's most frequent co-authors are Ira Hyman Schachar, MD (8 shared papers), Brian B. Berger, MD (2 shared papers) and Quan Dong Nguyen, MD (2 shared papers).

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