Doctor profile · Federal record

Dr. Nicholas Karr, M.D.

Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Dallas, TX

  • NPI 1568608644
  • 18 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
7515 Greenville Ave Ste 900
Dallas, TX 752313851
(214) 206-1447
fax (469) 808-0695

Credentials & registration

NPPES · NUCC
NPI registered
December 2008 — 18 yrs on file
Profile last updated
September 13, 2021
Year of graduation
2008 — 18 yrs since
Specialty taxonomy
207P00000X — NUCC code
State licenses (2)
Texas #N8527 · Michigan #4301092839
Medicaid
TX #284711301

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1568608644. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
83
Distinct HCPCS
3
Medicare allowed
$9,749
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 40 39 $125
99204 New patient office or other outpatient visit, 45-59 minutes 28 28 $162
96372 Injection of drug or substance under skin or into muscle 15 14 $14

In context: peer comparison

Among 162 peers in Dallas Emergency Medicine Physician, average services per provider: 94. This provider delivers 0.9× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
32
Patients
32
Total drug cost
$187
Drug Type Claims Patients Total cost
Prednisone Generic 17 17 $48
Azithromycin Generic 15 15 $139

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Nicholas Karr's medical specialty?
Dr. Nicholas Karr practices Emergency Medicine Physician in Dallas, TX.
Where does Dr. Nicholas Karr practice?
Dr. Nicholas Karr practices at 7515 Greenville Ave Ste 900, Dallas, TX 752313851. Office phone: 2142061447.
What is Dr. Nicholas Karr's NPI?
Dr. Nicholas Karr's National Provider Identifier (NPI) is 1568608644, issued by NPPES.
Does Dr. Nicholas Karr accept Medicare assignment?
Dr. Nicholas Karr does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Nicholas Karr commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204); Injection of drug or substance under skin or into muscle (HCPCS 96372). Source: CMS Medicare Physician & Other Practitioners file.