Robert J. Liebig, MD
Diagnostic Radiology Physician · Pleasant Hill, CA
Robert J. Liebig, MD is a diagnostic radiology physician with a practice address in Pleasant Hill, California, and NPI 1184608085, issued on Dec 5, 2005. Check the license (California G52684, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert J. Liebig
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- G52684 CA
Self-reported in NPPES; status is on the state search - Practice location
- 602 Gregory LN, Pleasant Hill, CA 94523
- Phone
- (925) 685-1047
- Enumerated
- Dec 5, 2005
- Record last updated
- Aug 19, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20260413000621); may accept Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Verify Robert J. Liebig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G52684Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $17.31
1 payment: food and beverage; the largest payer was Hologic Sales and Service, LLC. The 8,048 providers of this specialty with any payment received $2,488.38 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.
Robert J. Liebig among 4,500 diagnostic radiology physician records in California
Robert J. Liebig, MD is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1981 · median 2004 among the 3,130 with a school on file
- Record last updated2008 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Pleasant Hill → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Stanley Sizeler, M.D.Pleasant Hill, CA 945231023349719
- Huy Tran, M.D.Pleasant Hill, CA 945231194015404
- Bryson Borg, MDFairfield, CA 945331255394227
- James Bronk, M.D.Fairfield, CA 945331609824556
- Stephen Farrell, MDFairfield, CA 945331376621276
- William Gonser, M.D.Fairfield, CA 945331952348617
- James McMahon, M.D.Fairfield, CA 945331770539413
- Robert Bloom, M.D.Fairfield, CA 945341396786935
Common questions
What is Robert J. Liebig, MD's NPI number?
Robert J. Liebig, MD's National Provider Identifier (NPI) is 1184608085, issued on Dec 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert J. Liebig, MD located?
The NPPES record lists a practice address at 602 Gregory LN, Pleasant Hill, CA, 94523. Phone: (925) 685-1047. Providers update this record themselves, so call before visiting.
How can I verify Robert J. Liebig, MD's license?
NPPES lists California license number G52684, 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.
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.