Merrick Maynard Tsai, MD, FNP-BC, FNP-C
Psychiatric/Mental Health Nurse Practitioner · Highland, CA
Merrick Maynard Tsai, MD, FNP-BC, FNP-C is a psychiatric/mental health nurse practitioner with a practice address in Highland, California, and NPI 1366012791, issued on Jun 28, 2021. Check the license (California NP95017885, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Merrick Maynard Tsai
- Credential
- MD, FNP-BC, FNP-C
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License numbers
- NP95017885 CA
243315 AZ
APRN11020654 FL
857119 NV
Self-reported in NPPES; status is on the state search - Practice location
- 28839 Lemon St, Highland, CA 92346
- Phone
- (909) 742-9889
- Enumerated
- Jun 28, 2021
- Record last updated
- Aug 23, 2024
- Fax
- (909) 498-1635
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 4,226 in California → Look up another NPI →
Verify Merrick Maynard 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 NP95017885Check 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 psychiatric/mental health nurse practitioner in 2024
91 Medicare Part D claims for 45 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
Most prescribed
- Ondansetron Hcl29 claims
- Escitalopram Oxalate13 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.
Merrick Maynard Tsai among 4,226 psychiatric/mental health nurse practitioner records in California
Merrick Maynard Tsai, MD, FNP-BC, FNP-C is one of 4,226 psychiatric/mental health nurse practitioner records with a practice address in California. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 46% of them.
- NPI issued2021 · 46% of these records are older, 46% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileNo · 46% of these records are
- Record last updated2024 · 16% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 psychiatric/mental health nurse practitioner records list a practice address in Highland
They are 6 of the 399 NPPES records with a practice address in Highland, and 4,226 psychiatric/mental health nurse practitioner records in California.
All 4,226 in California → Every provider in Highland → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Darrell BroussardHighland, CA 923461699616516
- Kelli Clark, NPHighland, CA 923461750070918
- Oli EideHighland, CA 923461982559118
- Monique Frisby, DNP, PMHNPHighland, CA 923461598396848
- Hung Vo, NPHighland, CA 923461851210538
- Shazette Allison, PMHNPHesperia, CA 923451821910258
- Oyinkansola IyaniwuraHesperia, CA 923451487548616
- Michelle Jones, PMHNPHesperia, CA 923451558288100
Common questions
What is Merrick Maynard Tsai, MD, FNP-BC, FNP-C's NPI number?
Merrick Maynard Tsai, MD, FNP-BC, FNP-C's National Provider Identifier (NPI) is 1366012791, issued on Jun 28, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Merrick Maynard Tsai, MD, FNP-BC, FNP-C located?
The NPPES record lists a practice address at 28839 Lemon St, Highland, CA, 92346. Phone: (909) 742-9889. Providers update this record themselves, so call before visiting.
How can I verify Merrick Maynard Tsai, MD, FNP-BC, FNP-C's license?
NPPES lists California license number NP95017885, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Merrick Maynard Tsai, MD, FNP-BC, FNP-C prescribe under Medicare Part D?
In 2024, Merrick Maynard Tsai, MD, FNP-BC, FNP-C had 91 Medicare Part D claims for 45 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.