John Nathaniel Alvarez
Psychiatry Physician · Fullerton, CA
John Nathaniel Alvarez is a psychiatry physician with a practice address in Fullerton, California, and NPI 1912361106, issued on Apr 13, 2016. Check the license (California A155288, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Nathaniel Alvarez
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A155288 CA
Self-reported in NPPES; status is on the state search - Practice location
- 401 E Imperial Highway, Fullerton, CA 92835
- Phone
- (714) 447-7000
- Enumerated
- Apr 13, 2016
- Record last updated
- Sep 1, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (714) 447-7003
- Medicare enrollment
- Enrolled (PECOS I20201023000889); accepts Medicare assignment
- Medical or professional school
- Irvine California College Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify John Nathaniel Alvarez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A155288Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average psychiatry physician in 2024
463 Medicare Part D claims for 20 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Benztropine Mesylate63 claims
- Olanzapine48 claims
- Divalproex Sodium Er44 claims
- Lithium Carbonate30 claims
- Haloperidol Decanoate24 claims
- Quetiapine Fumarate24 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: $125.00
1 payment: food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 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
- County OF OrangeFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Nathaniel Alvarez among 8,673 psychiatry physician records in California
John Nathaniel Alvarez is one of 8,673 psychiatry physician 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 2016, is newer than 77% of them.
- NPI issued2016 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2016 · median 2005 among the 3,295 with a school on file
- Record last updated2020 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Fullerton → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Marc Charles, M.D.Fullerton, CA 928351316032386
- Kishore Desagani, M.D.Fullerton, CA 928351427084839
- Mandeep Reddy, MDFullerton, CA 928351972796563
- Hina Sidhu, M.D.Fullerton, CA 928351194919803
- Sandhya Gudapati, M.D.Fullerton, CA 928321962625384
- Parool Patel, MDFullerton, CA 928321740489764
- Racha ChamlatiFullerton, CA 928311215599337
- Joe Chiu, MDFullerton, CA 928311730193129
Common questions
What is John Nathaniel Alvarez's NPI number?
John Nathaniel Alvarez's National Provider Identifier (NPI) is 1912361106, issued on Apr 13, 2016. An NPI identifies a provider in billing; it is not a license.
Where is John Nathaniel Alvarez located?
The NPPES record lists a practice address at 401 E Imperial Highway, Fullerton, CA, 92835. Phone: (714) 447-7000. Providers update this record themselves, so call before visiting.
How can I verify John Nathaniel Alvarez's license?
NPPES lists California license number A155288, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Nathaniel Alvarez prescribe under Medicare Part D?
In 2024, John Nathaniel Alvarez had 463 Medicare Part D claims for 20 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.