Constance Chenfang Twu, O.D.
Optometrist · Victorville, CA
Constance Chenfang Twu, O.D. is an optometrist with a practice address in Victorville, California, and NPI 1619028669, issued on Jan 16, 2007. Check the license (California 11970, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Constance Chenfang Twu
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 11970 CA
Self-reported in NPPES; status is on the state search - Practice location
- 14400 Bear Valley RD, Victorville, CA 92392
- Phone
- (760) 955-6714
- Enumerated
- Jan 16, 2007
- Record last updated
- Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (760) 955-6668
- Medicare enrollment
- Enrolled (PECOS I20110503000769); accepts Medicare assignment
- Medical or professional school
- Southern California College Of Optometry, 2002
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 14400 Bear Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Hickey, D.P.M.Podiatrist1861576142
- Tiffany Hoang, O.D.Optometrist1275867996
- Catherine Ortiz, ODOptometrist1215861000
- Hoa Tran, ODOptometrist1033519376
Verify Constance Chenfang Twu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 11970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average optometrist in 2024
73 Medicare Part D claims for 21 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 58% of claims.
Most prescribed
- Cyclosporine31 claims
- Latanoprost25 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.
Industry payments in 2024: $122.94
1 payment: food and beverage; the largest payer was Bausch & Lomb Americas Inc. 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
- Southern California Permanente Medical GroupOntario, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Constance Chenfang Twu among 8,308 optometrist records in California
Constance Chenfang Twu, 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 2007, is newer than 34% of them.
- NPI issued2007 · 34% of these records are older, 46% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2002 · median 2008 among the 3,573 with a school on file
- Record last updated2021 · 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).
Optometrist providers in California
There are 8,308 optometrist records in California.
All 8,308 in California → Every provider in Victorville → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Allison Andrews, ODVictorville, CA 923921043048903
- Michael Guerret, ODVictorville, CA 923921053911842
- Tiffany Hoang, O.D.Victorville, CA 923921275867996
- Bhavleen Jolly, O.D.Victorville, CA 923921023497690
- Daryl Katz, ODVictorville, CA 923921235210683
- Thomas Lee, ODVictorville, CA 923921629278148
- Warren Newton, O.D.Victorville, CA 923921689753261
- Kelsey Nguyen, O.D.Victorville, CA 923921205202215
Common questions
What is Constance Chenfang Twu, O.D.'s NPI number?
Constance Chenfang Twu, O.D.'s National Provider Identifier (NPI) is 1619028669, issued on Jan 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Constance Chenfang Twu, O.D. located?
The NPPES record lists a practice address at 14400 Bear Valley RD, Victorville, CA, 92392. Phone: (760) 955-6714. Providers update this record themselves, so call before visiting.
How can I verify Constance Chenfang Twu, O.D.'s license?
NPPES lists California license number 11970, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Constance Chenfang Twu, O.D. prescribe under Medicare Part D?
In 2024, Constance Chenfang Twu, O.D. had 73 Medicare Part D claims for 21 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.