Cassandra Byrn
- Hospital affiliations
- 1
- Industry payments
- $29
- Medical groups
- 2
- State licenses
- 2
- Year NPI issued
- 2025
- Practice address
- 5255 Loughboro Rd NW, Washington, DC 20016
- Practice phone
- Call (202) 537-4680
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Cassandra Byrn's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Cassandra Byrn is an acute care nurse practitioner in Washington, District of Columbia
Cassandra Byrn practices at Sibley Memorial Hospital in Washington, District of Columbia, part of Johns Hopkins Health System.
Cassandra Byrn's NPI, 1972485167, was assigned on July 21, 2025. Cassandra Byrn holds District of Columbia license NP500226284.
- NPI
- 1972485167NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345738118
- NPI enumeration date
- July 21, 2025
- NPI status
- Active
- Practice phone
- (202) 537-4680
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 27
- Medical school graduation
- 2025
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Cassandra Byrn practices at Sibley Memorial Hospital in Washington, District of Columbia
Cassandra Byrn's primary practice is Sibley Memorial Hospital, at 5255 Loughboro Rd NW, Washington, DC 20016 in The District County. The practice phone is (202) 537-4680.
- Sibley Memorial Hospital5255 Loughboro Rd NW, Washington, DC 20016 · The District CountyPhone(202) 537-4680
Source: Dmand AI Affiliation Data
Cassandra Byrn is affiliated with 1 site of care and 2 medical groups
Cassandra Byrn's primary practice is Sibley Memorial Hospital in Washington, District of Columbia, part of Johns Hopkins Health System. The medical group on file is Johns Hopkins University. Dmand AI also links Cassandra Byrn to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Cassandra Byrn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Cassandra Byrn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sibley Memorial Hospital | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Johns Hopkins Health System and 6.2K+ hospitals, with verified contacts in the same login.
Cassandra Byrn is one of 129 acute care nurse practitioners in District of Columbia
Acute care is Cassandra Byrn's primary specialty in the NPI Registry, under taxonomy code 363LA2100X. Dmand AI has Cassandra Byrn's licenses on file in 2 states: District of Columbia and Connecticut.
Specialties and state licenses
- Acute care nurse practitioner, District of ColumbiaPrimary
- Ambulatory care registered nurse, Connecticut
Acute care nurse practitioners near Cassandra Byrn
Counts of acute care nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Cassandra Byrn's patients have a median age of 39
Across all payers, Dmand AI patient panel data puts Cassandra Byrn's median patient age at 39, with 100% women.
Cassandra Byrn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Cassandra Byrn received $29 in industry payments in 2025
CMS Open Payments shows 1 general payment to Cassandra Byrn from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Celgene Corporation paid the most, $29.
Companies that paid Cassandra Byrn the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Cassandra Byrn's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Cassandra Byrn
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Cassandra Byrn's NPI number?
Cassandra Byrn's NPI number is 1972485167. It was assigned on July 21, 2025, and it is active in the NPI Registry.
What does Cassandra Byrn specialize in?
Cassandra Byrn is an acute care nurse practitioner in Washington, District of Columbia. The primary specialty in the NPI Registry is Acute Care Nurse Practitioner (taxonomy code 363LA2100X).
Where does Cassandra Byrn practice?
Cassandra Byrn practices at 5255 Loughboro Rd NW, Washington, DC 20016. Cassandra Byrn's primary practice is Sibley Memorial Hospital in Washington, District of Columbia, part of Johns Hopkins Health System. Dmand AI also links Cassandra Byrn to 1 medical group.
What is Cassandra Byrn's office phone number?
The practice phone on file for Cassandra Byrn is (202) 537-4680.
What is Cassandra Byrn's medical license number?
Cassandra Byrn holds District of Columbia license NP500226284, one of the licenses on file in 2 states.
Which states has Cassandra Byrn been licensed in?
Dmand AI has state licenses on file for Cassandra Byrn in District of Columbia and Connecticut.
Which hospitals is Cassandra Byrn affiliated with?
Cassandra Byrn practices at Sibley Memorial Hospital in Washington, District of Columbia.
What medical group is Cassandra Byrn part of?
Cassandra Byrn is linked to Johns Hopkins University. Dmand AI links Cassandra Byrn to 1 more medical group.
Has Cassandra Byrn received payments from drug or device companies?
CMS Open Payments shows $29 in general payments to Cassandra Byrn from 1 company from 2025 to 2025. The largest total came from Celgene Corporation.
How long has Cassandra Byrn been practicing?
Cassandra Byrn graduated from medical school in 2025, 1 years ago.
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