David Gregory Kornguth, M.D.
Radiation Oncology Physician · San Francisco, CA
David Gregory Kornguth, M.D. is a radiation oncology physician with a practice address in San Francisco, California, and NPI 1801820394, issued on Jul 10, 2006. Check the license (California A104635, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Gregory Kornguth
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- A104635 CA
M1844 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1661 Mission St, San Francisco, CA 94103
- Phone
- (415) 541-0800
- Enumerated
- Jul 10, 2006
- Record last updated
- Jul 26, 2023
- Fax
- (415) 543-2811
- Medicare enrollment
- Enrolled (PECOS I20090218000415); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Verify David Gregory Kornguth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A104635Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.8 times the Medicare Part D claims of the average radiation oncology physician in 2024
909 Medicare Part D claims for 248 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 50 claims were for opioids.
Most prescribed
- Tamsulosin Hcl400 claims
- Finasteride122 claims
- Bicalutamide89 claims
- Ciprofloxacin Hcl56 claims
- Hydrocodone-Acetaminophen50 claims
- Orgovyx38 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: $873.65
31 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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
- Golden Gate Urology IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Gregory Kornguth among 735 radiation oncology physician records in California
David Gregory Kornguth, M.D. is one of 735 radiation oncology physician records with a practice address in California. 83% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2001 · median 2005 among the 545 with a school on file
- Record last updated2023 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in San Francisco → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Alexander Geng, M.D.San Francisco, CA 941091790066090
- Roy Abendroth, MDSan Francisco, CA 941151811988421
- Barry Chauser, MDSan Francisco, CA 941151902897515
- Alexander Gottschalk, M.D.San Francisco, CA 941151790728137
- I-Chow Hsu, M.D.San Francisco, CA 941151144263039
- Sara Huang, MDSan Francisco, CA 941151053393033
- John Lee, MDSan Francisco, CA 941151316938657
- John Meyer, MDSan Francisco, CA 941151164403416
Common questions
What is David Gregory Kornguth, M.D.'s NPI number?
David Gregory Kornguth, M.D.'s National Provider Identifier (NPI) is 1801820394, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Gregory Kornguth, M.D. located?
The NPPES record lists a practice address at 1661 Mission St, San Francisco, CA, 94103. Phone: (415) 541-0800. Providers update this record themselves, so call before visiting.
How can I verify David Gregory Kornguth, M.D.'s license?
NPPES lists California license number A104635, 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 David Gregory Kornguth, M.D. prescribe under Medicare Part D?
In 2024, David Gregory Kornguth, M.D. had 909 Medicare Part D claims for 248 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.