Doctor profile · Federal record

Dr. Karen Gregory, CNS

Acute Care Clinical Nurse Specialist (CMS: Certified Clinical Nurse Specialist (CNS)) · Specialist · Nurse Practitioner · Oklahoma City, OK

  • NPI 1033218896
  • Accepts Medicare
  • 23 yrs in practice
  • Licensed in 2 states
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
750 Ne 13Th Street
Oklahoma City, OK 731045051
(405) 235-0040
fax (405) 235-4495

Credentials & registration

NPPES · NUCC
NPI registered
September 2006 — 20 yrs on file
Profile last updated
January 12, 2011
Year of graduation
2003 — 23 yrs since
Specialty taxonomy
364SA2100X — NUCC code
State licenses (3)
Texas #725403 · Oklahoma #R71506 · Oklahoma #R0071506
Medicaid
OK #200113920A

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1033218896. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,265
Distinct HCPCS
3
Medicare allowed
$15,470
HCPCS Description Services Patients Avg allowed
95165 Professional service for preparation and provision of 1 or more antigens 1,036 15 $11
95117 Professional service for multiple injections of allergen 204 12 $9
99213 Established patient office or other outpatient visit, 20-29 minutes 25 19 $72

In context: peer comparison

Among 8 peers in this city , average services per provider: 253. This provider delivers 5.0× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$21,624
Transactions
75
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Regeneron Healthcare Solutions, Inc. 20 $12,581.10
Genentech USA, Inc. 12 $7,521.35
AstraZeneca Pharmaceuticals LP 8 $387.72
Genentech, Inc. 4 $385.35
Pharming Healthcare, Inc. 5 $212.47
GENZYME CORPORATION 10 $173.99
PFIZER INC. 2 $100.32
Novartis Pharmaceuticals Corporation 4 $72.53
CSL Behring 3 $49.77
Grifols USA, LLC 2 $42.86
Dermavant Sciences, Inc. 1 $25.39
Hologic Sales and Service, LLC 1 $22.14
GlaxoSmithKline, LLC. 1 $17.24
Takeda Pharmaceuticals U.S.A., Inc. 1 $16.85
Amgen Inc. 1 $15.29

By nature of payment

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
$15,548
Travel and Lodging
$4,137
Food and Beverage
$1,890
Education
$50

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
205
Patients
26
Total drug cost
$75,154
Drug Type Claims Patients Total cost
Montelukast Sodium Generic 70 11 $730
Famotidine Generic 23 0 $215
Fluticasone Propionate Generic 21 0 $510
Xolair (Omalizumab) Brand 21 0 $54,982
Epinephrine Generic 20 15 $4,540
Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) Brand 19 0 $13,183
Hydroxyzine Hcl Generic 16 0 $170
Levalbuterol Tartrate Hfa (Levalbuterol Tartrate) Brand 15 0 $825

Frequently asked questions

Auto-generated from federal data
What is Dr. Karen Gregory's medical specialty?
Dr. Karen Gregory practices Acute Care Clinical Nurse Specialist in Oklahoma City, OK.
Where does Dr. Karen Gregory practice?
Dr. Karen Gregory practices at 750 Ne 13Th Street, Oklahoma City, OK 731045051. Office phone: 4052350040.
What is Dr. Karen Gregory's NPI?
Dr. Karen Gregory's National Provider Identifier (NPI) is 1033218896, issued by NPPES.
Does Dr. Karen Gregory accept Medicare assignment?
Yes. Dr. Karen Gregory accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Gregory commonly perform?
Top Medicare-reported procedures in 2023: Professional service for preparation and provision of 1 or more antigens (HCPCS 95165); Professional service for multiple injections of allergen (HCPCS 95117); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.