Richard G. Marquardt, M.D.
Hematology & Oncology Physician · Kennewick, WA
Richard G. Marquardt, M.D. is a hematology & oncology physician with a practice address in Kennewick, Washington, and NPI 1083744353, issued on Mar 6, 2007. Check the license (Washington MD00014538, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Richard G. Marquardt
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- MD00014538 WA
Self-reported in NPPES; status is on the state search - Practice location
- 195706 E 30TH Ave, Kennewick, WA 99337
- Phone
- (509) 582-6057
- Enumerated
- Mar 6, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 476 in Washington → Look up another NPI →
Verify Richard G. Marquardt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00014538Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
16 Medicare Part D claims, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
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.
Richard G. Marquardt among 476 hematology & oncology physician records in Washington
Richard G. Marquardt, M.D. is one of 476 hematology & oncology physician records with a practice address in Washington. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 36% of them.
- NPI issued2007 · 36% of these records are older, 54% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2007 · 62% 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 Washington 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 Washington
There are 476 hematology & oncology physician records in Washington.
All 476 in Washington → Every provider in Kennewick → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Eric Gamboa, MDKennewick, WA 993361396938536
- Nattamol Hosiriluck, M.D.Kennewick, WA 993361831530799
- Nikolaos Myriounis, MDKennewick, WA 993381821235474
- Arunbhai Patel, MDKennewick, WA 993361649239310
- Thomas Rado, MD PHDKennewick, WA 993361316040736
- Ruben Sierra, MDKennewick, WA 993361598868911
- Ying Zhuo, M.D.Kennewick, WA 993361043491293
- Ted Keyes, M.D.Spokane, WA 992231922196641
Common questions
What is Richard G. Marquardt, M.D.'s NPI number?
Richard G. Marquardt, M.D.'s National Provider Identifier (NPI) is 1083744353, issued on Mar 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Richard G. Marquardt, M.D. located?
The NPPES record lists a practice address at 195706 E 30TH Ave, Kennewick, WA, 99337. Phone: (509) 582-6057. Providers update this record themselves, so call before visiting.
How can I verify Richard G. Marquardt, M.D.'s license?
NPPES lists Washington license number MD00014538, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Richard G. Marquardt, M.D. prescribe under Medicare Part D?
In 2024, Richard G. Marquardt, M.D. had 16 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.