Nathaniel Tsai
General Practice Dentistry · Castroville, CA
Nathaniel Tsai is a general practice dentistry with a practice address in Castroville, California, and NPI 1144883331, issued on Apr 15, 2019. Check the license (California DDS104615, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nathaniel Tsai
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- DDS104615 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11272 Merritt St Ste A, Castroville, CA 95012
- Phone
- (831) 633-5827
- Enumerated
- Apr 15, 2019
- Record last updated
- Sep 30, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Verify Nathaniel Tsai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license DDS104615Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% fewer Medicare Part D claims than the average general practice dentistry in 2024
81 Medicare Part D claims for 45 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin33 claims
- Chlorhexidine Gluconate26 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: $241.98
4 payments; by number, the most common kind was food and beverage; the largest payer was Dentsply Sirona Inc. The 41,669 providers of this specialty with any payment received $597.01 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.
Nathaniel Tsai among 17,852 general practice dentistry records in California
Nathaniel Tsai is one of 17,852 general practice dentistry records with a practice address in California. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2020 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 general practice dentistry records list a practice address in Castroville
They are 3 of the 44 NPPES records with a practice address in Castroville, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Castroville → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Jitendra Shah, D.D.S.Castroville, CA 950121922186162
- Janette Weldon, D.D.S.Castroville, CA 950121467886259
- Farida Alavi, DDSCupertino, CA 950141558466250
- Lindy Bixby, DDSCapitola, CA 950101629083597
- Michael Carlton, DDSCapitola, CA 950101013038546
- Brian Chun, D.D.S.Cupertino, CA 950141437264041
- Hrisula Cristea, DDSCupertino, CA 950141235163429
- Leon Davis, D.D.SCupertino, CA 950141083718431
Common questions
What is Nathaniel Tsai's NPI number?
Nathaniel Tsai's National Provider Identifier (NPI) is 1144883331, issued on Apr 15, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Nathaniel Tsai located?
The NPPES record lists a practice address at 11272 Merritt St Ste A, Castroville, CA, 95012. Phone: (831) 633-5827. Providers update this record themselves, so call before visiting.
How can I verify Nathaniel Tsai's license?
NPPES lists California license number DDS104615, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Nathaniel Tsai prescribe under Medicare Part D?
In 2024, Nathaniel Tsai had 81 Medicare Part D claims for 45 beneficiaries; the average among general practice dentistry prescribers was 83. 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.