Charles Richard Kossman, M.D.
Hematology & Oncology Physician · San Diego, CA
Charles Richard Kossman, M.D. is a hematology & oncology physician with a practice address in San Diego, California, and NPI 1184799892, issued on Nov 21, 2006. Check the license (California G28857, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charles Richard Kossman
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- G28857 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5555 Reservoir Dr, San Diego, CA 92120
- Phone
- (619) 287-9910
- Enumerated
- Nov 21, 2006
- Record last updated
- Nov 8, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (619) 287-3526
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 5555 Reservoir Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- William Burdine, III, R.PHPharmacist1164593885
- Gabrielle ChavisMarriage & Family Therapist1407445133
- Maribel ClerkBehavior Technician1538902358
- Payton EliasBehavior Technician1225872039
- Farhad Farjoudi, MDEndocrinology, Diabetes & Metabolism Physician1215251822
Verify Charles Richard Kossman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G28857Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
24 Medicare Part D claims, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Charles Richard Kossman among 1,583 hematology & oncology physician records in California
Charles Richard Kossman, M.D. is one of 1,583 hematology & 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 8% of them.
- NPI issued2006 · 8% of these records are older, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2012 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in San Diego → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Jenny Devitt, MDSan Diego, CA 921201134296098
- Scott Godfrey, DOSan Diego, CA 921201659464089
- Steven Kossman, M.D.San Diego, CA 921201477628634
- Nina Liu, MDSan Diego, CA 921201801944756
- Stephanie OssowskiSan Diego, CA 921201417301482
- John Oval, MDSan Diego, CA 921201720136617
- Dean Peng, MDSan Diego, CA 921201235298811
- Nandita Raja, MDSan Diego, CA 921201114079571
Common questions
What is Charles Richard Kossman, M.D.'s NPI number?
Charles Richard Kossman, M.D.'s National Provider Identifier (NPI) is 1184799892, issued on Nov 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles Richard Kossman, M.D. located?
The NPPES record lists a practice address at 5555 Reservoir Dr, San Diego, CA, 92120. Phone: (619) 287-9910. Providers update this record themselves, so call before visiting.
How can I verify Charles Richard Kossman, M.D.'s license?
NPPES lists California license number G28857, 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 Charles Richard Kossman, M.D. prescribe under Medicare Part D?
In 2024, Charles Richard Kossman, M.D. had 24 Medicare Part D claims; the average among hematology & oncology physician prescribers was 877. 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.