Samuel T. Grigoryan, NP
Psychiatric/Mental Health Registered Nurse · Laguna Niguel, CA
Samuel T. Grigoryan, NP is a psychiatric/mental health registered nurse with a practice address in Laguna Niguel, California, and NPI 1881189892, issued on Jun 22, 2018. Check the license (California 95165516, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Samuel T. Grigoryan
- Credential
- NP
- Primary taxonomy
- Psychiatric/Mental Health Registered Nurse 163WP0808X
- License number
- 95165516 CA
Self-reported in NPPES; status is on the state search - Practice location
- 29982 Ivy Glenn Dr Ste 203, Laguna Niguel, CA 92677
- Phone
- (949) 309-7903
- Enumerated
- Jun 22, 2018
- Record last updated
- May 15, 2023
- Fax
- (949) 716-5243
- Medicare enrollment
- Enrolled (PECOS I20230616002804); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health registered nurse records → All 2,568 in California → Look up another NPI →
Also registered at 29982 Ivy Glenn Dr Ste 203
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vinessa Gaerlan-Finch, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1275729329
- Angela HernandezPsychiatric/Mental Health Nurse Practitioner1598410946
Verify Samuel T. Grigoryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95165516Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% more Medicare Part D claims than the average psychiatric/mental health registered nurse in 2024
1,192 Medicare Part D claims for 98 beneficiaries, against an average of 888 among the 242 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Lamotrigine135 claims
- Alprazolam87 claims
- Dextroamphetamine-Amphetamine84 claims
- Escitalopram Oxalate70 claims
- Duloxetine Hcl60 claims
- Quetiapine Fumarate59 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.
Bills Medicare through one group practice
- Integrative Psychiatry A Medical CorporationLaguna Niguel, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Samuel T. Grigoryan among 2,568 psychiatric/mental health registered nurse records in California
Samuel T. Grigoryan, NP is one of 2,568 psychiatric/mental health registered nurse records with a practice address in California. 2% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 45% of them.
- NPI issued2018 · 45% of these records are older, 50% newer
- In a Medicare fileYes · 2% of these records are
- In the CMS Doctors and Clinicians fileYes · under 1% of these records are
- Graduated2021 · median 2023 among the 20 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163WP0808X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Registered Nurse providers in California
There are 2,568 psychiatric/mental health registered nurse records in California.
All 2,568 in California → Every provider in Laguna Niguel → Psychiatric/Mental Health Registered Nurse nationwide →
The 8 psychiatric/mental health registered nurse records with the nearest ZIP codes
- Kerry Melachouris, RN PMHNP STUDENTLaguna Niguel, CA 926771760126353
- Roxanne Hughes, PMHNPSan Clemente, CA 926721700673167
- Lauren Lee, RNLadera Ranch, CA 926941891487088
- Roneth Maria Bersalona, REGISTERED NURSESanta Ana, CA 927011235909508
- Donna Bray, R.N.Santa Ana, CA 927011649366352
- Nonette Chee, RNSanta Ana, CA 927011669613857
- Helen Engelhardt, R.N, LMFTSanta Ana, CA 927011164504502
- Muriel Enos, RNC.,PSY.DSanta Ana, CA 927011730302134
Common questions
What is Samuel T. Grigoryan, NP's NPI number?
Samuel T. Grigoryan, NP's National Provider Identifier (NPI) is 1881189892, issued on Jun 22, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Samuel T. Grigoryan, NP located?
The NPPES record lists a practice address at 29982 Ivy Glenn Dr Ste 203, Laguna Niguel, CA, 92677. Phone: (949) 309-7903. Providers update this record themselves, so call before visiting.
How can I verify Samuel T. Grigoryan, NP's license?
NPPES lists California license number 95165516, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Samuel T. Grigoryan, NP prescribe under Medicare Part D?
In 2024, Samuel T. Grigoryan, NP had 1,192 Medicare Part D claims for 98 beneficiaries; the average among psychiatric/mental health registered nurse prescribers was 888. 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.