Doctor profile · Federal record

Dr. Donielle Sliwa, MD, MPH

Medical Oncology Physician (CMS: Medical Oncology) · Internal Medicine Physician · Hematology & Oncology Physician · Dover, NH

  • NPI 1376809277
  • Accepts Medicare
  • 14 yrs in practice
  • Licensed in 3 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
789 Central Ave
Dover, NH 038202526
(603) 742-8787
Additional location
3350 Main St
Springfield, MA 011071112
(413) 794-0373
Additional location
75 Beekman St
Plattsburgh, NY 12901
(518) 562-7100
Mailing address
Po Box 412503
Boston, MA 022410259

Credentials & registration

NPPES · NUCC
NPI registered
April 2012 — 14 yrs on file
Profile last updated
August 14, 2024
Year of graduation
2012 — 14 yrs since
Specialty taxonomy
207RX0202X — NUCC code
State licenses (3)
New Hampshire #33217 · Massachusetts #252824 · New York #294514

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1376809277. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
679
Distinct HCPCS
5
Medicare allowed
$70,229
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 518 198 $98
99213 Established patient office or other outpatient visit, 20-29 minutes 80 67 $67
99205 New patient office or other outpatient visit, 60-74 minutes 49 49 $182
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 19 19 $175
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 13 13 $131

In context: peer comparison

Among 1 peers in Dover Medical Oncology Physician, average services per provider: 135. This provider delivers 5.0× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
155
Patients
24
Total drug cost
$201,639
Drug Type Claims Patients Total cost
Anastrozole Generic 64 24 $2,249
Tamoxifen Citrate Generic 29 0 $1,615
Letrozole Generic 22 0 $955
Prednisone Generic 15 0 $145
Eliquis (Apixaban) Brand 13 0 $13,376
Verzenio (Abemaciclib) Brand 12 0 $183,299

Frequently asked questions

Auto-generated from federal data
What is Dr. Donielle Sliwa's medical specialty?
Dr. Donielle Sliwa practices Medical Oncology Physician in Dover, NH.
Where does Dr. Donielle Sliwa practice?
Dr. Donielle Sliwa practices at 789 Central Ave, Dover, NH 038202526. Office phone: 6037428787.
What is Dr. Donielle Sliwa's NPI?
Dr. Donielle Sliwa's National Provider Identifier (NPI) is 1376809277, issued by NPPES.
Does Dr. Donielle Sliwa accept Medicare assignment?
Yes. Dr. Donielle Sliwa accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Donielle Sliwa commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.