Sabrina Maria Witherby, M.D.
Sabrina Maria Witherby is a Hematology & Oncology specialist based in Providence, RI with over 25 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
Sabrina Maria Witherby, M.D. has practiced internal medicine for 25+ years, working in group practice. She graduated from University of Massachusetts Medical School in 2001 and has 25+ years of clinical experience. She regularly sees Medicare patients with hypertension, cancer, and high cholesterol (per CMS claims data). CMS MIPS quality score: 100/100 (2023).
At a glance
- Uses generic medications more than 28% of reporting doctors in Rhode Island
- Federal MIPS score higher than 95% of MIPS-scored doctors in Rhode Island
- Virtual visits available — no app or travel required
Older · 2901dNPPES updated 2018-06-13 · verify NPI on CMS · Verify license at Rhode Island Board of Medical Licensure & Discipline
Contact & Location
Practice Location
593 Eddy Street Apc Main, Providence, RI 02903-4923
How Does This Doctor Compare?
Based on Medicare data, this doctor scores better than 95% of doctors in Rhode Island on federal quality measures, favors affordable generic drugs over brand-name ones.
MIPS Score
2023100/100
Rhode Island avg: 78.7 · US avg: 83.6
✓ Higher than most doctors nationally(+16.4 pts)
Top 5% of MIPS-scored doctors in Rhode IslandHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Generic Rx
↑ Higher = better85.9%
Rhode Island avg: 85.2 · US avg: 82.8
✓ Higher than most doctors nationally(+3.1 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
187
Unique beneficiaries
Standard volumePrescription Recipients
120
Patients prescribed
Prescriptions Written
482
Total claims
Total Medicare drug cost: $854k
Percentile rankings compared against 74 reporting peers in Rhode Island.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, Cancer, and High Cholesterol.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Diseases involving abnormal cell growth with potential to spread to other body parts
US avg: 20.8%↑ More patients than average (+51%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+1%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+2%) — a focus area for this doctor
Excessive worry or fear that interferes with daily life
US avg: 34.1%↑ More patients than average (+9%) — a focus area for this doctor
Conditions affecting emotional state, including depression and bipolar disorder
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-5%) — less common here
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%↓ Fewer patients than average (-4%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
Patient Reviews
No patient reviews yet. If you've seen Sabrina Maria Witherby, your feedback helps other patients.
Review PolicyAll feedback is moderated before publishing. We verify reviewer identity where possible and enforce a one-review-per-provider policy. Full guidelines →
Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2001
Umass Chan Medical School
25 years in practice
Experienced
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Taxonomy: 207RH0003X
Education & Training
University of Massachusetts Medical School (Class of 2001)
Mailing address
117 Ellenfield St Ste 101, Providence, RI 02905-4513
Differs from practice location
Virtual Hematology & Oncology Care With Sabrina Maria Witherby
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Sabrina Maria Witherby for blood pressure monitoring, follow-up consultations, cholesterol management — no travel to Providence required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Sabrina Maria Witherby
NPI records show Dr. Witherby as active with telehealth listed in Providence, RI. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (401) 444-5435.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
Is this your profile?
Verify credentials, update practice details, and manage telehealth.
Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact Sabrina Maria Witherby
Practice Location
593 Eddy Street Apc Main, Providence, RI 02903-4923
Mailing Address
117 Ellenfield St Ste 101, Providence, RI 02905-4513
This is a provider directory. Contact the office directly to schedule appointments.
Related Providers
Hematology & Oncology in Rhode Island
See allRonald Gilman, MD
Riverside, RI
Sheldon Lidofsky, MD
Providence, RI
Geoffrey Herbst Berg, MD
Providence, RI