Benjamin Kwak, OD
Optometrist · Warrenton, VA
Benjamin Kwak, OD is an optometrist with a practice address in Warrenton, Virginia, and NPI 1548035249, issued on Nov 22, 2023. Check the license (Virginia 0618003353, as entered in NPPES) with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Benjamin Kwak
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 0618003353 VA
Self-reported in NPPES; status is on the state search - Practice location
- 508 Fletcher Dr, Warrenton, VA 20186
- Phone
- (540) 216-7632
- Enumerated
- Nov 22, 2023
- Record last updated
- Dec 4, 2023
- Medicare enrollment
- Enrolled (PECOS I20231218004198); accepts Medicare assignment
- Medical or professional school
- Indiana University - School Of Optometry, 2023
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,460 in Virginia → Look up another NPI →
Also registered at 508 Fletcher Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heidi Calladine, ODOptometrist1720154115
Verify Benjamin Kwak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this profession
Search for license 0618003353Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average optometrist in 2024
29 Medicare Part D claims for 18 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.
Most prescribed
- Tobramycin-Dexamethasone18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Warrenton Eye AssociatesWarrenton, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin Kwak among 1,460 optometrist records in Virginia
Benjamin Kwak, OD is one of 1,460 optometrist records with a practice address in Virginia. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 91% of them.
- NPI issued2023 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2023 · median 2007 among the 885 with a school on file
- Record last updated2023 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 optometrist records list a practice address in Warrenton
They are 11 of the 592 NPPES records with a practice address in Warrenton, and 1,460 optometrist records in Virginia.
All 1,460 in Virginia → Every provider in Warrenton → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Nina Bhat, O.D.Warrenton, VA 201861972882512
- Laura Brykczynski, O.D.Warrenton, VA 201861750452926
- Lisa Butterfield, ODWarrenton, VA 201861992107254
- Heidi Calladine, ODWarrenton, VA 201861720154115
- Craig Dacales, O.D.Warrenton, VA 201861316952963
- Barbara Masiello, O.D.Warrenton, VA 201861558443887
- Shannon Moore, O.D.Warrenton, VA 201861689630246
- Priyanka Patel, O.D.Warrenton, VA 201861285920025
Common questions
What is Benjamin Kwak, OD's NPI number?
Benjamin Kwak, OD's National Provider Identifier (NPI) is 1548035249, issued on Nov 22, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Kwak, OD located?
The NPPES record lists a practice address at 508 Fletcher Dr, Warrenton, VA, 20186. Phone: (540) 216-7632. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Kwak, OD's license?
NPPES lists Virginia license number 0618003353, as entered by the provider. Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Benjamin Kwak, OD prescribe under Medicare Part D?
In 2024, Benjamin Kwak, OD had 29 Medicare Part D claims for 18 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.