Doctor profile · Federal record

Dr. Dennis Slater, MD

Hematology (Internal Medicine) Physician (CMS: Hematology/Oncology) · Internal Medicine Physician · Norwich, CT

  • NPI 1447235486
  • Accepts Medicare
  • MIPS 92.2 / 100 · 2023
  • 49 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
330 Washington St, Eastern CT Hematology & Oncology Suite 220
Norwich, CT 063602700
(860) 886-8362
fax (860) 886-9262

Credentials & registration

NPPES · NUCC
NPI registered
December 2005 — 21 yrs on file
Profile last updated
July 22, 2013
Year of graduation
1977 — 49 yrs since
Specialty taxonomy
207RH0000X — NUCC code
State license (1)
Connecticut #026872
Medicaid
CT #001268721

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1447235486. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
268
Distinct HCPCS
10
Medicare allowed
$11,198
HCPCS Description Services Patients Avg allowed
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 29 18 $7
36415 Insertion of needle into vein for collection of blood sample 26 18 $8
99205 New patient office or other outpatient visit, 60-74 minutes 22 22 $232
83540 Iron level 20 13 $6
83550 Iron binding capacity 20 13 $8
96127 Assessment of emotional or behavioral problems 19 18 $5
82728 Ferritin (blood protein) level 18 13 $13
80053 Blood test, comprehensive group of blood chemicals 17 14 $10
83615 Lactate dehydrogenase (enzyme) level 16 14 $6
85045 Red blood count, automated test 16 12 $4

In context: peer comparison

Among 1 peers in this city , average services per provider: 17. This provider delivers 16× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,948
Transactions
70
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Janssen Biotech, Inc. 12 $286.86
Astellas Pharma US Inc 6 $183.85
Mirati Therapeutics, Inc. 3 $168.23
Gilead Sciences, Inc. 6 $147.48
Celgene Corporation 7 $125.00
E.R. Squibb & Sons, L.L.C. 5 $100.85
GENZYME CORPORATION 5 $87.23
Novartis Pharmaceuticals Corporation 4 $73.80
ABBVIE INC. 4 $69.82
Merck Sharp & Dohme LLC 4 $64.01
Eisai Inc. 3 $61.46
ARRAY BIOPHARMA INC 3 $54.68
Rigel Pharmaceuticals, Inc. 3 $49.31
Genentech USA, Inc. 2 $46.98
Daiichi Sankyo Inc. 3 $46.52

By nature of payment

Food and Beverage
$1,748
Education
$200

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
38
Patients
0
Total drug cost
$1,297
Drug Type Claims Patients Total cost
Anastrozole Generic 16 0 $449
Chlorhexidine Gluconate Generic 11 0 $57
Letrozole Generic 11 0 $791

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Dennis Slater's medical specialty?
Dr. Dennis Slater practices Hematology (Internal Medicine) Physician in Norwich, CT.
Where does Dr. Dennis Slater practice?
Dr. Dennis Slater practices at 330 Washington St, Norwich, CT 063602700. Office phone: 8608868362.
What is Dr. Dennis Slater's NPI?
Dr. Dennis Slater's National Provider Identifier (NPI) is 1447235486, issued by NPPES.
Does Dr. Dennis Slater accept Medicare assignment?
Yes. Dr. Dennis Slater accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Dennis Slater commonly perform?
Top Medicare-reported procedures in 2023: Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (HCPCS 85025); Insertion of needle into vein for collection of blood sample (HCPCS 36415); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.