Marissa Panzer, NP
Hematology & Oncology Physician · Washington, DC
Marissa Panzer, NP is a hematology & oncology physician with a practice address in Washington, District of Columbia, and NPI 1841768124, issued on Nov 5, 2018. Check the license (District of Columbia RN1043662, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Marissa Panzer
- Credential
- NP
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- RN1043662 DC
0024176855 VA
Self-reported in NPPES; status is on the state search - Practice location
- 5255 Loughboro RD NW Bldg B, Washington, DC 20016
- Phone
- (202) 660-6500
- Enumerated
- Nov 5, 2018
- Record last updated
- Apr 30, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (202) 660-6501
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 81 in District of Columbia → Look up another NPI →
Also registered at 5255 Loughboro RD NW Bldg B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Razan Al-NahhasEmergency Medicine Physician1134671647
- Katherine Arnold, MDObstetrics & Gynecology Physician1164866794
- Gregory Blanton, MDEmergency Medicine Physician1689992760
- Talia Broadus, PA-CPhysician Assistant1528650850
- Jamestina Diop, RN, MSN, CRNPFamily Nurse Practitioner1134510266
- Gurpreet Howie, PA-CPhysician Assistant1861458291
Verify Marissa Panzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license RN1043662Check 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: $121.08
1 payment: food and beverage; the largest payer was Puma Biotechnology, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 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.
Marissa Panzer among 81 hematology & oncology physician records in District of Columbia
Marissa Panzer, NP is one of 81 hematology & oncology physician records with a practice address in District of Columbia. 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 2018, is newer than 93% of them.
- NPI issued2018 · 93% of these records are older, 4% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2019 · 70% 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 District of Columbia 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 District of Columbia
There are 81 hematology & oncology physician records in District of Columbia.
All 81 in District of Columbia → Every provider in Washington → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Nicole Laslett, DOWashington, DC 200161154716371
- Vered Stearns, M.D.Washington, DC 200161861420945
- Sarah Waheed, MDWashington, DC 200161669692406
- Sara Horton, MDWashington, DC 200171346278553
- Dal Yoo, M.D.Washington, DC 200171063564532
- Anita Aggarwal, DOWashington, DC 200101891740726
- Puja Arora, M.D.Washington, DC 200101154766533
- Mounika GangireddyWashington, DC 200101376066852
Common questions
What is Marissa Panzer, NP's NPI number?
Marissa Panzer, NP's National Provider Identifier (NPI) is 1841768124, issued on Nov 5, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Panzer, NP located?
The NPPES record lists a practice address at 5255 Loughboro RD NW Bldg B, Washington, DC, 20016. Phone: (202) 660-6500. Providers update this record themselves, so call before visiting.
How can I verify Marissa Panzer, NP's license?
NPPES lists District of Columbia license number RN1043662, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. 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.