Nancy Suk-Ying Kwan, O.D.
Optometrist · Rancho Cucamonga, CA
Nancy Suk-Ying Kwan, O.D. is an optometrist with a practice address in Rancho Cucamonga, California, and NPI 1922187855, issued on Nov 2, 2006. Check the license (California OPT11365T, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nancy Suk-Ying Kwan
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT11365T CA
Self-reported in NPPES; status is on the state search - Practice location
- 9596 Baseline RD, Rancho Cucamonga, CA 91701
- Phone
- (909) 989-1791
- Enumerated
- Nov 2, 2006
- Record last updated
- Aug 25, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070330000271); accepts Medicare assignment
- Medical or professional school
- Southern California College Of Optometry, 2000
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Verify Nancy Suk-Ying Kwan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT11365TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average optometrist in 2024
23 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.
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.
Industry payments in 2024: $1,317.55
4 payments; by number, the most common kind was travel and lodging; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Unicare Community Health Center, Inc.Colton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nancy Suk-Ying Kwan among 8,308 optometrist records in California
Nancy Suk-Ying Kwan, O.D. is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 66% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2000 · median 2008 among the 3,573 with a school on file
- Record last updated2016 · 67% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 optometrist records list a practice address in Rancho Cucamonga
They are 44 of the 4,579 NPPES records with a practice address in Rancho Cucamonga, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Rancho Cucamonga → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- William Bescoby, O.D.Alta Loma, CA 917011114010162
- Brendan QuallsRancho Cucamonga, CA 917011316729569
- Robert Rothbard, O.D.Alta Loma, CA 917011932286689
- Wade Weisz, O.D.Alta Loma, CA 917011083793681
- Phyllis Ardary, ODBaldwin Park, CA 917061134277056
- Robert Chew, ODBaldwin Park, CA 917061801944749
- Shirley Chew, ODBaldwin Park, CA 917061588712426
- Linda Chun, ODBaldwin Park, CA 917061770631681
Common questions
What is Nancy Suk-Ying Kwan, O.D.'s NPI number?
Nancy Suk-Ying Kwan, O.D.'s National Provider Identifier (NPI) is 1922187855, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nancy Suk-Ying Kwan, O.D. located?
The NPPES record lists a practice address at 9596 Baseline RD, Rancho Cucamonga, CA, 91701. Phone: (909) 989-1791. Providers update this record themselves, so call before visiting.
How can I verify Nancy Suk-Ying Kwan, O.D.'s license?
NPPES lists California license number OPT11365T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Nancy Suk-Ying Kwan, O.D. prescribe under Medicare Part D?
In 2024, Nancy Suk-Ying Kwan, O.D. had 23 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.