Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Lian Bach, DO

Individual provider Family Medicine Physician · NPI 1144490962

Lian Bach, DO is registered under Family Practice in Santa Ana, California. Qualified in 2006, 20 years ago. Practices with Providence Medical Foundation, a 1,465-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
20
Licensed in
CA
In the registry since
2008
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

2212 E 4th St
Santa Ana, CA 92705
Phone: (714) 288-3230
Fax: (714) 744-5294
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3291 Loma Vista Rd, Ventura, CA 93003-3099 — (805) 652-6228

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 20A10289 (CA)

Record details

NPI number1144490962
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 7, 2008
Last updated in NPPESOctober 15, 2021
Certification dateOctober 15, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice Providence Medical Foundation — 1465 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients78
Services billed 296 a service is one billed item, such as a visit, a test or a procedure
Average patient age68

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Travel and Lodging $888 1 payment · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $145 7 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Providence St. Joseph Hospital Hospital · Orange, CA

Colleagues at Providence Medical Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1465 clinicians in the practice; 12 are shown here.

Other providers in Santa Ana