Dr. Nancy Suzanne Onisko, DO

  • Dallas, TX
  • Emergency medicine physician
NPI1104025337PAC ID1759431000
Medicare services, 2024
38
Medicare patients, 2024
51
Part D claims, 2024
19
Publications
6
MIPS score, 2024
83
Practice address
5200 Harry Hines Blvd, Dallas, TX 75235
Practice phone
Call (214) 590-8000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Parkland Memorial Hospital

Hospital · Dallas, Texas

See all 5 affiliations

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Dr. Nancy Suzanne Onisko is an emergency medicine physician in Dallas, Texas

Dr. Onisko practices at Parkland Memorial Hospital in Dallas, Texas, part of Parkland Health.

Dr. Onisko's NPI, 1104025337, was assigned on July 17, 2007. Dr. Onisko graduated from Arizona College of Osteopathic Medicine - Glendale in 2003. Dr. Onisko holds Texas license P7685.

NPI and contact details
Medicare PAC ID
1759431000
NPI enumeration date
July 17, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(214) 590-8000
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
49
Medical school graduation
2003

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Nancy Suzanne Onisko practices at Parkland Memorial Hospital in Dallas, Texas

Dr. Onisko's primary practice is Parkland Memorial Hospital, at 5200 Harry Hines Blvd, Dallas, TX 75235 in Dallas County. The practice phone is (214) 590-8000.

Source: Dmand AI Affiliation Data

Dr. Nancy Suzanne Onisko is affiliated with 4 sites of care and 1 medical group

Dr. Onisko's primary practice is Parkland Memorial Hospital in Dallas, Texas, part of Parkland Health. The medical group on file is University of Texas Southwestern Medical Center. Dmand AI also links Dr. Onisko to 1 more clinical lab, 1 group practice or clinic and 1 hospital outpatient department, each named with a free account.

See all 5 affiliations for Dr. Onisko

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Nancy Suzanne Onisko's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Onisko practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Parkland Memorial HospitalAvailable with a free account
+3 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Nancy Suzanne Onisko is one of 4,831 emergency medicine physicians in Texas

Emergency medicine is Dr. Onisko's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Onisko is board certified in addiction medicine by the American Board of Emergency Medicine. Dr. Onisko is licensed in Texas.

Specialties and state licenses

  • Emergency medicine, TexasPrimaryLicense P7685 · taxonomy 207P00000X

Emergency medicine physicians near Dr. Onisko

Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Nancy Suzanne Onisko billed Medicare for 38 services in 2024

CMS data shows 38 Medicare services from Dr. Onisko across 2 procedure codes in 2024, for 51 Medicare patients. Medicare paid $3,994 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202438
Medicare patients51
Paid by Medicare$3,994
Procedure codes2

Dr. Onisko's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 482024: 3821%

Dr. Onisko compared with the Texas median for emergency medicine physicians, 2024

  • Dr. Onisko
  • Texas median
Medicare services
38vs 22583% below
Medicare patients
51vs 20675% below

Medians across 4,588 emergency medicine physicians in Texas with Dmand AI profiles that report each measure.

Dr. Onisko's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Onisko

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Nancy Suzanne Onisko treated 51 Medicare patients in 2024, average age 69

CMS counts 51 Medicare patients who saw Dr. Onisko in 2024. The largest group is 65 to 74, with 19 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 49% are also on Medicaid. Their average risk score is 2.77, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Onisko's median patient age at 44, with 63% women.

Medicare patients, 202451
Average age69
Average risk score2.77
Also on Medicaid49%

Dr. Onisko's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Onisko's Medicare patients by sex, 2024

  • Women2855%
  • Men2345%

Chronic conditions among Dr. Onisko's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes63%
  4. Heart failure53%
  5. Chronic kidney disease47%
  6. Mood disorders45%
  7. Depression43%
  8. Arthritis41%

Share of Medicare patients with each condition. A patient can have several.

Dr. Onisko's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 44

Patient panel by sex, all payers

  • Women63%
  • Men37%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Nancy Suzanne Onisko wrote 19 Medicare Part D claims in 2024

In 2024, Dr. Onisko wrote 19 Medicare Part D claims for 13 patients. 95% of them were for generic drugs.

Part D claims, 202419
Part D patients13

Dr. Onisko's Part D claims by kind of drug, 2024

  • Generic18 claims95%
  • Brand-name and other1 claims5%

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Nancy Suzanne Onisko scored 83 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Onisko for performance year 2024, reported as part of a group. Dr. Onisko accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Onisko's MIPS scores, performance year 2024

  • 83of 100Final score
  • 70.1of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 73of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Nancy Suzanne Onisko has 6 publications on record

Dmand AI links 6 papers to Dr. Onisko, published from 2016 to 2023. 2016 was the busiest year, with 4. The most frequent topics are Agkistrodon, Antivenins and Snake Bites. Dr. Onisko's most frequent co-authors are Emily Harris Adhikari, MD, Alex Koyfman, MD and Brit J. Long, MD.

Papers6
Years published2016 to 2023

Topics Dr. Onisko writes about most

  • Agkistrodon
  • Antivenins
  • Snake Bites

Dr. Onisko's most frequent co-authors

Recent publications by Dr. Onisko

See all 6 publications and co-authors

See who Dr. Onisko researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Onisko works with, so you can find a warm path to the right emergency medicine physicians.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Nancy Suzanne Onisko received $20 in industry payments in 2017

CMS Open Payments shows 1 general payment to Dr. Onisko from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $20.

Companies that paid Dr. Onisko the most, 2017 to 2017

Share is of all general payments to this clinician.

See all payments to Dr. Onisko

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Nancy Suzanne Onisko graduated from Arizona College of Osteopathic Medicine - Glendale

Dr. Onisko graduated from Arizona College of Osteopathic Medicine - Glendale in 2003.

  1. Medical schoolArizona College of Osteopathic Medicine - Glendale
  2. Board certified in addiction medicineAmerican Board of Emergency Medicine
  3. Board certified in emergency medicineAmerican Board of Emergency Medicine
  4. Board certified in addiction medicineAmerican Board of Preventive Medicine
  5. Board certified in 2008 - 2011AZ State License
  6. Board certified in 2007 - 2014CA State License
  7. Board certified in 2004 - 2007MI State License
  8. Board certified in 2013 - 2025TX State License

Source: Dmand AI Professional Profile Data

Dr. Nancy Suzanne Onisko accepts plans from 16 insurance carriers

Dr. Onisko is in network with 16 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.

Plan types Dr. Onisko accepts, by number of carriers

  1. HMO9
  2. PPO9
  3. Medicare5
  4. POS4
  5. EPO3
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Nancy Suzanne Onisko's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Nancy Suzanne Onisko

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Nancy Suzanne Onisko's NPI number?

Dr. Nancy Suzanne Onisko's NPI number is 1104025337. It was assigned on July 17, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Nancy Suzanne Onisko?

Dr. Nancy Suzanne Onisko is an emergency medicine physician in Dallas, Texas. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Dr. Nancy Suzanne Onisko practice?

Dr. Onisko practices at 5200 Harry Hines Blvd, Dallas, TX 75235. Dr. Onisko's primary practice is Parkland Memorial Hospital in Dallas, Texas, part of Parkland Health. Dmand AI also links Dr. Onisko to 1 clinical lab, 1 group practice or clinic and 1 hospital outpatient department.

What is Dr. Nancy Suzanne Onisko's office phone number?

The practice phone on file for Dr. Onisko is (214) 590-8000.

What is Dr. Nancy Suzanne Onisko's medical license number?

Dr. Onisko holds Texas license P7685.

Which hospitals is Dr. Nancy Suzanne Onisko affiliated with?

Dr. Onisko practices at Parkland Memorial Hospital in Dallas, Texas.

What medical group is Dr. Nancy Suzanne Onisko part of?

Dr. Onisko is linked to University of Texas Southwestern Medical Center.

Does Dr. Nancy Suzanne Onisko accept Medicare?

Yes. CMS data shows Dr. Onisko billed Medicare for 38 services in 2024, and Dr. Onisko accepts Medicare assignment.

What is Dr. Nancy Suzanne Onisko's MIPS score?

Dr. Onisko's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.

How many Medicare patients does Dr. Nancy Suzanne Onisko see?

CMS counts 51 Medicare patients who saw Dr. Onisko in 2024, with an average age of 69.

Show 8 more questionsShow fewer questions

Is Dr. Nancy Suzanne Onisko board certified?

Yes. Dr. Onisko is board certified in addiction medicine by the American Board of Emergency Medicine.

What services does Dr. Nancy Suzanne Onisko bill to Medicare?

In 2024, Dr. Onisko's most billed Medicare services were emergency department visit (99284) and emergency department visit (99285).

Where did Dr. Nancy Suzanne Onisko go to medical school?

Dr. Onisko graduated from Arizona College of Osteopathic Medicine - Glendale in 2003.

Has Dr. Nancy Suzanne Onisko received payments from drug or device companies?

CMS Open Payments shows $20 in general payments to Dr. Onisko from 1 company from 2017 to 2017. The largest total came from Boston Scientific Corporation.

How long has Dr. Nancy Suzanne Onisko been practicing?

Dr. Onisko graduated from medical school in 2003, 23 years ago.

Does Dr. Nancy Suzanne Onisko do research?

Dmand AI links 6 publications to Dr. Onisko, published from 2016 to 2023.

Who does Dr. Nancy Suzanne Onisko publish with?

Dr. Onisko's most frequent co-authors are Emily Harris Adhikari, MD (1 shared paper), Alex Koyfman, MD (1 shared paper) and Brit J. Long, MD (1 shared paper).

What insurance does Dr. Nancy Suzanne Onisko accept?

Dr. Onisko is in network with 16 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.

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