Bernadette Llenado Chiu, MD
Family Medicine Physician · Atwater, CA
Bernadette Llenado Chiu, MD is a family medicine physician with a practice address in Atwater, California, and NPI 1770233819, issued on Mar 23, 2022. Check the license (California A198011, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Bernadette Llenado Chiu
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A198011 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1675 Shaffer RD, Atwater, CA 95301
- Phone
- (209) 383-5500
- Enumerated
- Mar 23, 2022
- Record last updated
- Aug 20, 2025
- Fax
- (209) 383-6910
- Medicare enrollment
- Enrolled (PECOS I20250904001135); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1675 Shaffer RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Blia Collazo, PTPhysical Therapist1700167467
- Larry Gurtel, PTPhysical Therapist1063807832
- Frank Hubbell, LCSWClinical Social Worker1205099918
- Mildred Jones-Keller, O.T.Occupational Therapist1972780716
- Nancy Keeler, NPPhysician Assistant1427100320
- Joyce Molag, PTPhysical Therapist1982987129
Verify Bernadette Llenado Chiu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A198011Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
47 Medicare Part D claims for 17 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of 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
- Merced Faculty Associates Medical Group IncorporatedAtwater, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bernadette Llenado Chiu among 17,133 family medicine physician records in California
Bernadette Llenado Chiu, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 3% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2017 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 family medicine physician records list a practice address in Atwater
They are 11 of the 679 NPPES records with a practice address in Atwater, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Atwater → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jose Buenrostro, M.D.Atwater, CA 953011861839151
- Patrick De Dios, MDAtwater, CA 953011245927896
- Rodrigo Dezubiria, M.DAtwater, CA 953011215040563
- Eric Disbrow, M.D.Atwater, CA 953011730150897
- Donald Golden, M.DAtwater, CA 953011942224811
- William Nation, M.D.Atwater, CA 953011558438622
- Derrick Olzack, P.A.Atwater, CA 953011114456738
- Thavalinh Sphabmixay, M.D.Atwater, CA 953011841445277
Common questions
What is Bernadette Llenado Chiu, MD's NPI number?
Bernadette Llenado Chiu, MD's National Provider Identifier (NPI) is 1770233819, issued on Mar 23, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Bernadette Llenado Chiu, MD located?
The NPPES record lists a practice address at 1675 Shaffer RD, Atwater, CA, 95301. Phone: (209) 383-5500. Providers update this record themselves, so call before visiting.
How can I verify Bernadette Llenado Chiu, MD's license?
NPPES lists California license number A198011, 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 Bernadette Llenado Chiu, MD prescribe under Medicare Part D?
In 2024, Bernadette Llenado Chiu, MD had 47 Medicare Part D claims for 17 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.