Quick answers
- Does Cassandra G. Griffin Weathers accept Medicare assignment?
- Yes. Medicare's clinician data says Cassandra G. Griffin Weathers accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Cassandra G. Griffin Weathers see?
- In 2024, CMS data shows 132 Original Medicare patients and 132 services for Cassandra G. Griffin Weathers. This counts Original Medicare only and measures volume, not quality.
- What is Cassandra G. Griffin Weathers's NPI number?
- 1285602557. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Cassandra G. Griffin Weathers, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 132 |
|---|---|
| Services billed to Medicare | 132 |
| Different services or procedures | 41 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Anesthesia for other procedure on lower abdomen (00840)20 services
- Anesthesia for placement or revision of blood flow shunt (01844)16 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Diabetes54%
- Chronic kidney disease46%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)36%
Hospitals where Cassandra G. Griffin Weathers works
Medicare's Facility Affiliation Data lists Cassandra G. Griffin Weathers at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- MedStar Southern Maryland Hospital CenterClinton, MD · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 210062
Practice locations
Addresses where Cassandra G. Griffin Weathers is enrolled with Medicare (CMS data updated October 2, 2026).
- 1145 19th St NW, 311 Mmg at 19th Street NWWashington, DC 20036 (202) 429‑2401
- 7503 Surratts RdClinton, MD 20735 (301) 868‑8000
Group practices
Medicare enrollment lists Cassandra G. Griffin Weathers as a member of this group (CMS data updated October 2, 2026).
- MedStar Medical Group II LLC3,767 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), District of Columbia →
Other nurse anesthetists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Other clinicians in MedStar Medical Group II LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 1992 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285602557 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians