Doctor profile · Federal record

Dr. Kellen Knowles, MD

Internal Medicine Physician (CMS: Internal Medicine) · Baltimore, MD

  • NPI 1104282003
  • 8 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
600 N Wolfe Street, The Johns Hopkins Hospital
Baltimore, MD 212872109
(410) 955-5000
Mailing address
6201 Greenleigh Ave
Middle River, MD 212202004

Credentials & registration

NPPES · NUCC
NPI registered
January 2016 — 10 yrs on file
Profile last updated
May 29, 2021
Year of graduation
2018 — 8 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Maryland #D91444

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1104282003. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$106
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Abiomed 1 $106.47

By nature of payment

Food and Beverage
$106

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
73
Patients
0
Total drug cost
$820
Drug Type Claims Patients Total cost
Metoprolol Succinate Generic 32 0 $267
Atorvastatin Calcium Generic 26 0 $370
Losartan Potassium Generic 15 0 $182

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Kellen Knowles's medical specialty?
Dr. Kellen Knowles practices Internal Medicine Physician in Baltimore, MD.
Where does Dr. Kellen Knowles practice?
Dr. Kellen Knowles practices at 600 N Wolfe Street, Baltimore, MD 212872109. Office phone: 4109555000.
What is Dr. Kellen Knowles's NPI?
Dr. Kellen Knowles's National Provider Identifier (NPI) is 1104282003, issued by NPPES.
Does Dr. Kellen Knowles accept Medicare assignment?
Dr. Kellen Knowles does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.