Lian Bach, D.O.
Family Medicine Physician · Santa Ana, CA
Lian Bach, D.O. is a family medicine physician with a practice address in Santa Ana, California, and NPI 1144490962, issued on Mar 7, 2008. Check the license (California 20A10289, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lian Bach
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A10289 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2212 E 4TH St, Santa Ana, CA 92705
- Phone
- (714) 288-3230
- Enumerated
- Mar 7, 2008
- Record last updated
- Oct 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (714) 744-5294
- Medicare enrollment
- Enrolled (PECOS I20091110000705); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2212 E 4TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sinda Althoen, M.D.Pediatrics Physician1619180569
- Natalie Buntzen, M.S., R.D.Registered Dietitian1477802486
- Shelley Canlas, M.D.Pediatrics Physician1700022894
- Cindy Cantt, RDRegistered Dietitian1285345793
- Danielle Curitore, M.D.Pediatrics Physician1831153394
- Crystal Fame, DOFamily Medicine Physician1588246284
Verify Lian Bach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A10289Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average family medicine physician in 2024
2,428 Medicare Part D claims for 254 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 19 claims were for opioids.
Most prescribed
- Atorvastatin Calcium162 claims
- Losartan Potassium109 claims
- Levothyroxine Sodium102 claims
- Rosuvastatin Calcium84 claims
- Alendronate Sodium83 claims
- Metformin Hcl83 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: $273.56
15 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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
- Providence Medical FoundationTustin, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lian Bach among 17,133 family medicine physician records in California
Lian Bach, D.O. 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 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2006 · median 2005 among the 10,652 with a school on file
- Record last updated2021 · 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).
177 family medicine physician records list a practice address in Santa Ana
They are 177 of the 8,904 NPPES records with a practice address in Santa Ana, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Santa Ana → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ani Atoian, MDSanta Ana, CA 927051174743504
- Thomas Badin, M.D.Santa Ana, CA 927051740358704
- Emily Cahill, D.O.Santa Ana, CA 927051346237948
- Judy Cheng-Chen, M.D.Santa Ana, CA 927051982786521
- Shahriar Davari, M.D.Santa Ana, CA 927051386862001
- Darrel Hopkins, D.O.Santa Ana, CA 927051033204318
- Daniel Jimenez, MDSanta Ana, CA 927051255466801
- Kent Lehman, M.D.Santa Ana, CA 927051346253812
Common questions
What is Lian Bach, D.O.'s NPI number?
Lian Bach, D.O.'s National Provider Identifier (NPI) is 1144490962, issued on Mar 7, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Lian Bach, D.O. located?
The NPPES record lists a practice address at 2212 E 4TH St, Santa Ana, CA, 92705. Phone: (714) 288-3230. Providers update this record themselves, so call before visiting.
How can I verify Lian Bach, D.O.'s license?
NPPES lists California license number 20A10289, 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 Lian Bach, D.O. prescribe under Medicare Part D?
In 2024, Lian Bach, D.O. had 2,428 Medicare Part D claims for 254 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.