Cassandra Lynn Libbing, DO
Hospitalist Physician · Washington, DC
Cassandra Lynn Libbing, DO is a hospitalist physician with a practice address in Washington, District of Columbia, and NPI 1942889456, issued on Apr 3, 2021. Check the license (District of Columbia DO210012418, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Cassandra Lynn Libbing
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- DO210012418 DC
Self-reported in NPPES; status is on the state search - Practice location
- 3800 Reservoir Road NW, Washington, DC 20007
- Phone
- (202) 444-8168
- Enumerated
- Apr 3, 2021
- Record last updated
- Jun 13, 2024
- Fax
- (877) 303-1460
- Medicare enrollment
- Enrolled (PECOS I20240807000239); accepts Medicare assignment
- Medical or professional school
- Marian University College Of Osteopathic Medicine, 2021
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 116 in District of Columbia → Look up another NPI →
Also registered at 3800 Reservoir Road NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mariam Hammad, MDStudent in an Organized Health Care Education/Training Program1215731518
- Allison Hayes, NPFamily Nurse Practitioner1760098586
- Paul Henderson, MDStudent in an Organized Health Care Education/Training Program1780434142
Verify Cassandra Lynn Libbing in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license DO210012418Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average hospitalist physician in 2024
207 Medicare Part D claims for 54 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Jardiance14 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
- Medstar Medical Group II LLCWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cassandra Lynn Libbing among 116 hospitalist physician records in District of Columbia
Cassandra Lynn Libbing, DO is one of 116 hospitalist physician records with a practice address in District of Columbia. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 89% of them.
- NPI issued2021 · 89% of these records are older, 6% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2021 · median 2012 among the 95 with a school on file
- Record last updated2024 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X 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).
Hospitalist Physician providers in District of Columbia
There are 116 hospitalist physician records in District of Columbia.
All 116 in District of Columbia → Every provider in Washington → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jacob Feldman, M.D.Washington, DC 200071750542437
- Ernest Fischer, M.D.Washington, DC 200071518284355
- Chitra Jaipaul, MDWashington, DC 200071730115429
- Seth Krevat, MDWashington, DC 200071134267545
- Stacy Kruse, M.D.Washington, DC 200071720246291
- Benjamin Lorenz, M.D.Washington, DC 200071316081342
- Lauren Lubrano, MDWashington, DC 200071558595975
- James Malatack, M.D.Washington, DC 200071770804866
Common questions
What is Cassandra Lynn Libbing, DO's NPI number?
Cassandra Lynn Libbing, DO's National Provider Identifier (NPI) is 1942889456, issued on Apr 3, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Cassandra Lynn Libbing, DO located?
The NPPES record lists a practice address at 3800 Reservoir Road NW, Washington, DC, 20007. Phone: (202) 444-8168. Providers update this record themselves, so call before visiting.
How can I verify Cassandra Lynn Libbing, DO's license?
NPPES lists District of Columbia license number DO210012418, 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.
How much does Cassandra Lynn Libbing, DO prescribe under Medicare Part D?
In 2024, Cassandra Lynn Libbing, DO had 207 Medicare Part D claims for 54 beneficiaries; the average among hospitalist physician prescribers was 521. 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.