Casey O'Bryan, NP-C
NPI 1891066650 · Family Nurse Practitioner · Washington, DC
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Casey O'Bryan, NP-C is a Family Nurse Practitioner provider in Washington, DC (NPI 1891066650).
Provider details
- NPI number
- 1891066650
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Female
- Sole proprietor
- No
- License
- RN1025479 (DC)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
40 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 25 | $120 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 15 | $8 |
Typical Medicare-allowed amounts for these services range $8–$120 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 4400 Massachusetts Ave NwStudent Health CenterWashington, DC 20016-8001Phone: (202) 885-3380Fax: (202) 885-1222
Registry dates
- Enumerated
- 2012-01-25
- Last updated
- 2025-03-19
- Certified
- 2025-03-19
Frequently asked questions
- What is Casey O'Bryan's NPI number?
- Casey O'Bryan's National Provider Identifier (NPI) is 1891066650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Casey O'Bryan's specialty?
- Casey O'Bryan is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Casey O'Bryan located?
- Casey O'Bryan's practice location on file with NPPES is 1350 Connecticut Ave Nw Ste 1250, Washington, DC 20036-1728.
- What is Casey O'Bryan's phone number?
- The practice phone number listed in the NPPES registry for Casey O'Bryan is (888) 663-6331.
- Does Casey O'Bryan accept Medicare?
- Casey O'Bryan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Casey O'Bryan's NPI active?
- Yes — Casey O'Bryan's NPI (1891066650) is active in the NPPES registry as of the last update on 2025-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.