Ryan Chao, MD
Psychiatry Physician · Fremont, CA
Ryan Chao, MD is a psychiatry physician with a practice address in Fremont, California, and NPI 1437786076, issued on Mar 24, 2020. Check the license (California 192584, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ryan Chao
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 192584 CA
Self-reported in NPPES; status is on the state search - Practice location
- 47000 Warm Springs Blvd # 416, Fremont, CA 94539
- Phone
- (510) 304-7635
- Enumerated
- Mar 24, 2020
- Record last updated
- Jun 24, 2024
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Ryan Chao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 192584Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average psychiatry physician in 2024
114 Medicare Part D claims for 18 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Escitalopram Oxalate19 claims
- Quetiapine Fumarate14 claims
- Divalproex Sodium13 claims
- Hydroxyzine Hcl13 claims
- Venlafaxine Hcl12 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: $101.21
5 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, 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.
Ryan Chao among 8,673 psychiatry physician records in California
Ryan Chao, MD 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 2020, is newer than 87% of them.
- NPI issued2020 · 87% of these records are older, 9% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2024 · 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 Fremont → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Pawan Chadha, M.D.Fremont, CA 945391548523178
- Lavanya RavikumarFremont, CA 945391386583524
- Suselina Acosta-Goldstein, MDFremont, CA 945381841557683
- Kurt Biehl, MDFremont, CA 945381326242959
- John Cotrufo, D.O.Fremont, CA 945381295945467
- Jose Flores-Lopez, M.D.Fremont, CA 945381588864821
- Kyle Johnson, M.D.Fremont, CA 945381033521414
- Fadi Josef, M.D.Fremont, CA 945381508027442
Common questions
What is Ryan Chao, MD's NPI number?
Ryan Chao, MD's National Provider Identifier (NPI) is 1437786076, issued on Mar 24, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Chao, MD located?
The NPPES record lists a practice address at 47000 Warm Springs Blvd # 416, Fremont, CA, 94539. Phone: (510) 304-7635. Providers update this record themselves, so call before visiting.
How can I verify Ryan Chao, MD's license?
NPPES lists California license number 192584, 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 Ryan Chao, MD prescribe under Medicare Part D?
In 2024, Ryan Chao, MD had 114 Medicare Part D claims for 18 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.