Dr. Nasser Dean Askari , DO
Internal Medicine • Mansfield, TX
1001 Matlock Rd Ste 101
Mansfield, TX 760636564
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Nasser Askari is listed in NPPES under Internal Medicine.
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NPI assigned on July 27, 2012; this date does not establish years in practice.
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Published CMS data list 467 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 70 service units.
- 99213 — Established patient outpatient office visit: 64 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 31 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 17 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 580 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Atorvastatin Calcium — 74 prescription fills, including refills.
- Rosuvastatin Calcium — 57 prescription fills, including refills.
- Amlodipine Besylate — 42 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 26 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Mansfield, TX (2024, 27 clinicians with data). Median for this group: 653. Middle half: 447 to 1,394.
Fewer Medicare Part B services than 60% of clinicians listed under Internal Medicine in Texas (2024, 5,423 clinicians with data). Median for this group: 645. Middle half: 277 to 1,322.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 358 in 2020 to 467 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1001 Matlock Rd Ste 101
Mansfield, TX 760636564
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Irving, TX. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 2 distinct group names: Questcare Hospitalists Pllc; Questcare Medical Clinics Pllc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Lake Erie College Of Osteopathic Medicine, Erie
2008
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
121 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $21,486 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $17,760 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
1,541 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$23,345 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $205.44 across 9 records.
By nature of payment
- Food and Beverage: $205.44 across 9 records.
Reporting-company totals (3 largest of 6)
- GlaxoSmithKline, LLC.: $97.98 across 4 records.
- Pfizer Inc.: $26.87 across 1 record.
- Sumitomo Pharma America, Inc.: $22.27 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
18 years (graduated 2008)
CMS Doctors and Clinicians data list 2008 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2012
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Askari has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Askari as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Mansfield and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Mansfield, TX (2024, 27 clinicians with data). Median for this group: 653. Middle half: 447 to 1,394.
Fewer Medicare Part B services than 60% of clinicians listed under Internal Medicine in Texas (2024, 5,423 clinicians with data). Median for this group: 645. Middle half: 277 to 1,322.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Mansfield, TX (2024, 27 clinicians with data). Median for this group: $58,922. Middle half: $43,045 to $135,815.
A lower Medicare-allowed amount than 75% of clinicians listed under Internal Medicine in Texas (2024, 5,423 clinicians with data). Median for this group: $61,221. Middle half: $27,420 to $115,826.
Paid by Medicare
A lower Medicare payment amount than 90% of clinicians listed under Internal Medicine in Mansfield, TX (2024, 27 clinicians with data). Median for this group: $46,706. Middle half: $34,194 to $104,059.
A lower Medicare payment amount than 75% of clinicians listed under Internal Medicine in Texas (2024, 5,423 clinicians with data). Median for this group: $47,501. Middle half: $20,446 to $90,051.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine in Mansfield, TX (2024, 26 clinicians with data). Median for this group: 447. Middle half: 157 to 3,640.
Close to the middle for clinicians listed under Internal Medicine in Texas (2024, 5,674 clinicians with data). Median for this group: 828. Middle half: 121 to 4,824.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in Mansfield, TX (2024, 26 clinicians with data). Median for this group: $41,749. Middle half: $9,929 to $230,503.
Close to the middle for clinicians listed under Internal Medicine in Texas (2024, 5,674 clinicians with data). Median for this group: $64,859. Middle half: $4,211 to $436,775.
32 active clinicians are listed under Internal Medicine with a practice address in Mansfield, TX (9,191 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Mansfield
25% of these 32 clinicians have the CMS telehealth indicator.
84.4% of these 32 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 30% from 358 in 2020 to 467 in 2024.
- 2020: 358
- 2021: 348
- 2022: 318
- 2023: 515
- 2024: 467
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Medicare-allowed amount
Medicare-allowed amount increased 77% from $12,154 in 2020 to $21,486 in 2024.
- 2020: $12,154
- 2021: $13,986
- 2022: $9,873
- 2023: $15,610
- 2024: $21,486
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Paid by Medicare
Paid by Medicare increased 90% from $9,372 in 2020 to $17,760 in 2024.
- 2020: $9,372
- 2021: $10,322
- 2022: $6,348
- 2023: $12,602
- 2024: $17,760
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 72% from 338 in 2020 to 580 in 2024.
- 2020: 338
- 2021: 426
- 2022: 459
- 2023: 569
- 2024: 580
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30-day fills
30-day fills increased 70% from 906 in 2020 to 1,541 in 2024.
- 2020: 906
- 2021: 1,083
- 2022: 1,217
- 2023: 1,543
- 2024: 1,541
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Part D drug cost
Part D drug cost increased 304% from $5,772 in 2020 to $23,345 in 2024.
- 2020: $5,772
- 2021: $17,655
- 2022: $18,548
- 2023: $45,606
- 2024: $23,345
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $11.87 in 2019 to $205.44 in 2025.
- 2019: $11.87
- 2021: $20.34
- 2023: $74.69
- 2024: $117.33
- 2025: $205.44
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $205.44.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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TRELEGY ELLIPTA | General | $28.32 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PREVNAR 20 | General | $26.87 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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TRELEGY ELLIPTA | General | $23.98 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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TRELEGY ELLIPTA | General | $23.54 |
| Sumitomo Pharma America, Inc. |
Food and Beverage
In-kind items and services
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GEMTESA | General | $22.27 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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TRELEGY ELLIPTA | General | $22.14 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $22.00 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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Cologuard Collection Kit | General | $18.63 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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BREZTRI | General | $17.69 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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70 | 52 | $401.06 | $123.37 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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64 | 51 | $269.81 | $86.45 |
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36415
Insertion of needle into vein for collection of blood sample
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31 | 26 | $10.00 | $8.65 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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30 | 30 | $324.90 | $125.76 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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26 | 24 | $22.00 | $7.61 |
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83036
Hemoglobin a1c level
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25 | 23 | $27.00 | $9.52 |
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80053
Blood test, comprehensive group of blood chemicals
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24 | 23 | $29.00 | $10.35 |
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80061
Blood test, lipids (cholesterol and triglycerides)
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24 | 23 | $37.00 | $13.12 |
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82607
Cyanocobalamin (vitamin b-12) level
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24 | 24 | $42.00 | $14.78 |
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82746
Folic acid level, serum
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24 | 24 | $41.00 | $14.41 |
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84443
Blood test, thyroid stimulating hormone (tsh)
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24 | 24 | $48.00 | $16.46 |
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82306
Vitamin d-3 level
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23 | 23 | $75.00 | $29.01 |
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82044
Urine microalbumin (protein) analysis
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21 | 21 | $13.00 | $6.11 |
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82570
Creatinine level to test for kidney function or muscle injury
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21 | 21 | $15.00 | $5.08 |
|
81003
Automated urinalysis test
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13 | 13 | $7.00 | $2.20 |
|
96127
Assessment of emotional or behavioral problems
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12 | 11 | $16.00 | $4.35 |
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84153
Psa (prostate specific antigen) measurement, total
|
11 | 11 | $51.00 | $18.02 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 74 | 6,800 | $703.32 | 33 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 57 | 5,360 | $423.39 | 23 |
| Amlodipine Besylate | Amlodipine Besylate | 42 | 3,730 | $156.20 | 22 |
| Losartan Potassium | Losartan Potassium | 37 | 3,500 | $183.19 | 15 |
| Lisinopril | Lisinopril | 35 | 3,190 | $231.60 | 14 |
| Metoprolol Succinate | Metoprolol Succinate | 32 | 2,850 | $337.25 | 11 |
| Levothyroxine Sodium | Levothyroxine Sodium | 31 | 2,880 | $381.85 | 12 |
| Metformin Hcl | Metformin Hcl | 30 | 2,790 | $227.27 | 15 |
| Tamsulosin Hcl | Tamsulosin Hcl | 23 | 2,140 | $279.76 | — |
| Azithromycin | Azithromycin | 17 | 85 | $87.87 | 16 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 17 | 143 | $146.72 | 15 |
| Jardiance | Empagliflozin | 16 | 900 | $18,163.82 | — |
| Alendronate Sodium | Alendronate Sodium | 15 | 1,266 | $111.14 | — |
| Cefdinir | Cefdinir | 14 | 122 | $260.29 | 13 |
| Simvastatin | Simvastatin | 13 | 1,190 | $131.97 | — |
| Spironolactone | Spironolactone | 13 | 870 | $54.03 | — |
| Methylprednisolone | Methylprednisolone | 12 | 72 | $51.81 | 11 |
| Omeprazole | Omeprazole | 12 | 1,010 | $250.25 | — |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 12 | 480 | $108.45 | — |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 12 | 207 | $260.72 | — |
| Carvedilol | Carvedilol | 11 | 990 | $66.09 | — |
| Escitalopram Oxalate | Escitalopram Oxalate | 11 | 1,000 | $91.52 | — |
| Hydrochlorothiazide | Hydrochlorothiazide | 11 | 890 | $51.14 | — |
| Levocetirizine Dihydrochloride | Levocetirizine Dihydrochloride | 11 | 750 | $59.93 | — |
| Montelukast Sodium | Montelukast Sodium | 11 | 1,030 | $70.25 | — |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-04-29NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20161005001512
TX
3476841594
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Questcare Medical Clinics Pllc
1571 Sw Wilshire Blvd, Burleson, TX 760288717
Phone: 9549395000
Questcare Medical Clinics Pllc
1001 Matlock Rd, Mansfield, TX 760636564
Phone: 9549395000
Questcare Medical Clinics Pllc
8861 Davis Blvd, Keller, TX 762480306
Phone: 9549395000
Questcare Hospitalists Pllc
2601 W Randol Mill Rd, Arlington, TX 760124289
Phone: 8178014823
Questcare Hospitalists Pllc
3301 Matlock Rd, Arlington, TX 760152908
Phone: 6825096200
Secondary Practice Locations
6750 N Macarthur Blvd, Suite 150
Irving, TX 750392875
Phone: 9723730303
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Family Nurse Practitioner (Board Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1001 MATLOCK RD STE 101, MANSFIELD, TX 760636564 (Tel: 8175390770)
Registered at 1001 MATLOCK RD STE 101, MANSFIELD, TX 760636564 (Tel: 8175390770)
Pediatrics (license number reported to NPPES: TX Q6492)
NPI status registered as active in NPPES database
Registered at 6750 N MACARTHUR BLVD, SUITE 150, IRVING, TX 750392875 (Tel: 9723730303)
Registered at 6750 N MACARTHUR BLVD, SUITE 150, IRVING, TX 750392875
Recorded as NASSER ASKARI, D.O.
Internal Medicine (license number reported to NPPES: TX Q6492)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Mansfield
- Dr. Hani Yousif, MD
- Dr. Shelley Lenamond, DO
- Dr. Mary Snellings, MD
- Dr. Michael Mcinnis, MD
- Dr. Pramesh Dave, MD
- Prabhash Kakarla
Mailing Address
1001 Matlock Rd Ste 101
Mansfield, TX 760636564
Phone: 8175390770