George Lum, MD
Critical Care Medicine (Internal Medicine) Physician · Walnut Creek, CA
George Lum, MD is a critical care medicine (internal medicine) physician with a practice address in Walnut Creek, California, and NPI 1629156799, issued on Nov 2, 2006. Check the license (California G70165, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- George Lum
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- G70165 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1425 S Main St, Walnut Creek, CA 94596
- Phone
- (925) 295-4000
- Enumerated
- Nov 2, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00G701650 CA
- Medicare enrollment
- Enrolled (PECOS I20110105000763); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 1425 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eric AaserudeEmergency Medicine Physician1811491194
- Derek Abbassi, MDObstetrics & Gynecology Physician1841364155
- Peter Ackerman, MDEmergency Medicine Physician1427435023
- Aaron Mark Acosta, DOEmergency Medicine Physician1538789987
- Basil Adad, MDOtolaryngology Physician1487732574
- Derek Ailes, M.D.Emergency Medical Services (Emergency Medicine) Physician1992001804
Verify George Lum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G70165Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% more Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
1,072 Medicare Part D claims for 240 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Spiriva Respimat229 claims
- Wixela Inhub207 claims
- Prednisone107 claims
- Alvesco63 claims
- Albuterol Sulfate Hfa62 claims
- Pirfenidone52 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
- Permanente Medical Group IncAntioch, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
George Lum among 723 critical care medicine (internal medicine) physician records in California
George Lum, MD is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 60% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1988 · median 2005 among the 559 with a school on file
- Record last updated2021 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Walnut Creek → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Gregory Anderson, MDWalnut Creek, CA 945961063590131
- Andrew Chu, M.D.Walnut Creek, CA 945961861816639
- Edward Dayoan, MDWalnut Creek, CA 945961386718989
- Sai Praveen Haranath, MBBSWalnut Creek, CA 945961053366344
- Hsiu-Wei Lin, MDWalnut Creek, CA 945961427136514
- Martin Mazar, MDWalnut Creek, CA 945961962580043
- Kuruganti Reddy, MDWalnut Creek, CA 945961952480600
- Anne Rogers, MDWalnut Creek, CA 945961306924493
Common questions
What is George Lum, MD's NPI number?
George Lum, MD's National Provider Identifier (NPI) is 1629156799, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is George Lum, MD located?
The NPPES record lists a practice address at 1425 S Main St, Walnut Creek, CA, 94596. Phone: (925) 295-4000. Providers update this record themselves, so call before visiting.
How can I verify George Lum, MD's license?
NPPES lists California license number G70165, 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 George Lum, MD prescribe under Medicare Part D?
In 2024, George Lum, MD had 1,072 Medicare Part D claims for 240 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.