Geoffrey Liang, D.O.
Internal Medicine Physician · Mission Hills, CA
Geoffrey Liang, D.O. is an internal medicine physician with a practice address in Mission Hills, California, and NPI 1083064091, issued on Jun 21, 2016. Check the license (California 20A17086, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Geoffrey Liang
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A17086 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11333 Sepulveda Blvd, Mission Hills, CA 91345
- Phone
- (877) 634-3196
- Enumerated
- Jun 21, 2016
- Record last updated
- Aug 28, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190809001133); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2016
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 11333 Sepulveda Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Geoffrey Liang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A17086Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
269 Medicare Part D claims for 114 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 18 claims were for opioids.
Most prescribed
- Atorvastatin Calcium18 claims
- Amlodipine Besylate12 claims
- Metoprolol Tartrate12 claims
- Pantoprazole Sodium12 claims
- Prednisone12 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: $277.62
11 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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 Facey Medical FoundationMission Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geoffrey Liang among 17,696 internal medicine physician records in California
Geoffrey Liang, D.O. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 79% of them.
- NPI issued2016 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2016 · median 2004 among the 11,065 with a school on file
- Record last updated2019 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
89 internal medicine physician records list a practice address in Mission Hills
They are 89 of the 731 NPPES records with a practice address in Mission Hills, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Mission Hills → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Joseph Chambers, MD.Mission Hills, CA 913451467435297
- Delora Climaco, MD.Mission Hills, CA 913451407880743
- Jay Dhiman, MDMission Hills, CA 913451598758245
- Jose Esparrago, M.D.Mission Hills, CA 913451083616106
- Noel Flores, M.D.Mission Hills, CA 913451316921000
- Jennifer Hyer, D.O.Mission Hills, CA 913451770567711
- Manoj Mathew, M.D.Mission Hills, CA 913451962479816
- Jaganath Naidu, MDMission Hills, CA 913451447283924
Common questions
What is Geoffrey Liang, D.O.'s NPI number?
Geoffrey Liang, D.O.'s National Provider Identifier (NPI) is 1083064091, issued on Jun 21, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Geoffrey Liang, D.O. located?
The NPPES record lists a practice address at 11333 Sepulveda Blvd, Mission Hills, CA, 91345. Phone: (877) 634-3196. Providers update this record themselves, so call before visiting.
How can I verify Geoffrey Liang, D.O.'s license?
NPPES lists California license number 20A17086, 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 Geoffrey Liang, D.O. prescribe under Medicare Part D?
In 2024, Geoffrey Liang, D.O. had 269 Medicare Part D claims for 114 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.