Timothy Chao
Dentist · Orange, CA
Timothy Chao is a dentist with a practice address in Orange, California, and NPI 1417004276, issued on Jan 4, 2007. Check the license (California B44848, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Timothy Chao
- Primary taxonomy
- Dentist 122300000X
- License number
- B44848 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4501 E Chapman Ave, Orange, CA 92869
- Phone
- (714) 538-6566
- Enumerated
- Jan 4, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- B44848 CA
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Verify Timothy Chao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license B44848Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average dentist in 2024
48 Medicare Part D claims for 28 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin29 claims
- Ibuprofen13 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: $78.73
2 payments; by number, the most common kind was food and beverage; the largest payer was Kuraray America Inc. The 31,974 providers of this specialty with any payment received $540.36 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.
Timothy Chao among 14,729 dentist records in California
Timothy Chao is one of 14,729 dentist records with a practice address in California. 56% 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 18% of them.
- NPI issued2007 · 18% of these records are older, 58% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
147 dentist records list a practice address in Orange
They are 147 of the 13,245 NPPES records with a practice address in Orange, and 14,729 dentist records in California.
All 14,729 in California → Every provider in Orange → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Susana Kay, DDSOrange, CA 928691730305723
- Sheida Khazaii-TabariOrange, CA 928691386932812
- Manyong Kim, D.D.S.Orange, CA 928691578712758
- Mark Mroch, D.D.S.Orange, CA 928691588781637
- Martin NguyenOrange, CA 928691962048033
- Steven Ogaz, DDSOrange, CA 928691003034943
- Shane Patel, DDSOrange, CA 928691629622022
- Joseph Sabet, DDSOrange, CA 928691952409211
Common questions
What is Timothy Chao's NPI number?
Timothy Chao's National Provider Identifier (NPI) is 1417004276, issued on Jan 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Chao located?
The NPPES record lists a practice address at 4501 E Chapman Ave, Orange, CA, 92869. Phone: (714) 538-6566. Providers update this record themselves, so call before visiting.
How can I verify Timothy Chao's license?
NPPES lists California license number B44848, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Timothy Chao prescribe under Medicare Part D?
In 2024, Timothy Chao had 48 Medicare Part D claims for 28 beneficiaries; the average among dentist prescribers was 86. 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.