Doctor profile · Federal record

Dr. Nancy Onisko, D.O.

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

  • NPI 1104025337
  • Accepts Medicare
  • MIPS 74.6 / 100 · 2023
  • 23 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
5323 Harry Hines Blvd, Mc 8890
Dallas, TX 753908890
(623) 261-8154

Credentials & registration

NPPES · NUCC
NPI registered
July 2007 — 19 yrs on file
Profile last updated
March 17, 2026
Year of graduation
2003 — 23 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
Texas #P7685
Medicaid
CA #1104025337

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1104025337. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
48
Distinct HCPCS
3
Medicare allowed
$5,866
HCPCS Description Services Patients Avg allowed
99284 Emergency department visit with moderate level of medical decision making 21 21 $120
99285 Emergency department visit with high level of medical decision making 14 13 $174
99283 Emergency department visit with low level of medical decision making 13 13 $71

In context: peer comparison

Among 162 peers in Dallas Emergency Medicine Physician, average services per provider: 94. This provider delivers 0.5× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Nancy Onisko's medical specialty?
Dr. Nancy Onisko practices Emergency Medicine Physician in Dallas, TX.
Where does Dr. Nancy Onisko practice?
Dr. Nancy Onisko practices at 5323 Harry Hines Blvd, Dallas, TX 753908890. Office phone: 6232618154.
What is Dr. Nancy Onisko's NPI?
Dr. Nancy Onisko's National Provider Identifier (NPI) is 1104025337, issued by NPPES.
Does Dr. Nancy Onisko accept Medicare assignment?
Yes. Dr. Nancy Onisko accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nancy Onisko commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with low level of medical decision making (HCPCS 99283). Source: CMS Medicare Physician & Other Practitioners file.