NAZANIN WILLIAMS MD
NPI 1174855548
Emergency Medicine in Flower Mound, TX

Q: What is Nazanin Williams's NPI number?

The NPI number for Nazanin Williams is 1174855548. It was assigned to this individual provider in the NPPES registry on February 9, 2010.

Q: What is Nazanin Williams's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Q: When was this NPI record last updated?

The NPPES record for Nazanin Williams was last updated on April 10, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since February 09, 2010PECOS Enrolled

4400 LONG PRAIRIE ROAD, FLOWER MOUND, TX 75028(512) 452-8533 Get Directions Write a Review

NPPES record last updated: April 10, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Nazanin Williams Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NAZANIN WILLIAMS MD (NPI 1174855548) is an individual emergency medicine provider in Flower Mound, Texas, licensed in Texas (N5484) and active in the NPI registry since February 2010. She is enrolled in Medicare PECOS, is affiliated with Texas Health Presbyterian Hospital Flower Mound, and is a graduate of Other (2006).

NPPES Registry Identity

NPI1174855548

Entity TypeIndividualFemale

Primary Taxonomy207P00000X

Provider Legal NameNAZANIN WILLIAMSCredential: MD

Location Address4400 LONG PRAIRIE ROADFlower Mound, TX 75028

Mailing Address10807 Stone House LnFrisco, TX 75033-2362 · (469) 865-8635

Phone(512) 452-8533

Sole ProprietorNo

Medical School CMSOtherGraduated 2006

Enumeration DateFebruary 9, 2010

Last NPPES UpdateApril 10, 2013

✔ NPI 1174855548 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in TX · N5484

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

4400 LONG PRAIRIE ROAD, Flower Mound, TX 75028

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Molina Healthcare and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nazanin Williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6103955588

PECOS Enrollment IDI20100524000209

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Nazanin Williams reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Legacy Urgent Care, PA

15 mi

Urgent Care

9205 LEGACY DR
Frisco, TX 75033

Reassigned Medicare billing, Texas enrollment
279 clinicians in this Medicare group

NPI 1568622272 (972) 668-6020

Frisco Emergency Medicine Associates, PA

15 mi

Emergency Care

9205 LEGACY DR
Frisco, TX 75034

Reassigned Medicare billing, Texas enrollment
80 clinicians in this Medicare group

NPI 1467612176 (972) 668-6020

Pediatric Emergency Medicine Group LLP

16 mi

Emergency Medicine

7601 PRESTON RD
Plano, TX 75024

Reassigned Medicare billing, Texas enrollment
123 clinicians in this Medicare group

NPI 1629448535 (817) 451-4208

Travis County Emergency Physicians PA

193 mi

Emergency Medicine

1201 W 38TH ST
Austin, TX 78705

Reassigned Medicare billing, Texas enrollment
1,511 clinicians in this Medicare group

NPI 1962440933 (330) 493-4443

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 27

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967

Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.

1,675 services16 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

170 services17 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

82 services74 patients

Injection, ceftriaxone sodium, per 250 mg J0696

Ceftriaxone sodium is an antibiotic injection used to treat a variety of bacterial infections. Each injection contains 250 mg of the medicine. It works by stopping the growth of bacteria in your body.

80 services20 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

55 services51 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

55 services51 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

54 services50 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

51 services50 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

33 services32 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

32 services27 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

31 services29 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

30 services30 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

29 services27 patients

Infusion into a vein for hydration, each additional hour 96361

This procedure involves delivering fluids directly into your vein to keep your body hydrated. It is typically done when oral hydration is insufficient. Each additional hour means more fluid is infused to ensure adequate hydration.

29 services25 patients

Troponin (protein) analysis, quantitative 84484

Troponin analysis is a blood test that checks for damage to the heart. Elevated levels of troponin, a protein in heart cells, can indicate a heart attack. This test helps in early detection and management of heart-related issues.

27 services27 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 87428

This test uses a method called immunoassay to identify severe acute respiratory syndrome coronavirus and influenza. It works by detecting specific proteins (antigens) in a sample, like a nasal swab. It's a powerful tool in diagnosing these viral infections.

26 services25 patients

Infusion, normal saline solution , 1000 cc J7030

An infusion of normal saline solution, 1000 cc, is a common medical procedure. It involves introducing a saltwater solution into your bloodstream via an intravenous (IV) line. This helps to hydrate your body, correct electrolyte imbalances, and deliver medications if needed.

25 services23 patients

Amylase (enzyme) level 82150

Amylase is an enzyme that helps break down starches into sugars during digestion. An amylase level test measures the amount of this enzyme in your blood or urine. This test helps identify conditions like pancreatitis or other digestive issues.

22 services21 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

22 services22 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

20 services20 patients

Administration of vaccine 90471

Administering a vaccine involves injecting a small, safe piece of a virus or bacteria into your body. This triggers your immune system to recognize and fight off the disease in the future. It's a vital tool in preventing serious illnesses and maintaining public health.

15 services15 patients

Emergency department visit with high level of medical decision making 99285

An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.

15 services15 patients

Injection of drug or substance into vein 96374

This procedure involves introducing a medication or substance directly into your vein using a syringe. It's a quick and efficient way to deliver treatment throughout your body. You might feel a small prick when the needle enters. It's generally safe and effective.

14 services13 patients

Creatine kinase (cardiac enzyme) level, mb fraction only 82553

Creatine kinase (CK-MB) is a test that measures the level of CK-MB enzyme in the blood. This enzyme is found mostly in the heart. High levels can indicate heart damage, such as a heart attack. The test helps in diagnosing and monitoring heart conditions.

13 services13 patients

Myoglobin (muscle protein) level 83874

The Myoglobin level test measures the amount of myoglobin, a muscle protein, in your blood. This test is usually done when muscle damage is suspected, such as after an injury or in conditions like heart attack. High levels may indicate muscle damage.

13 services13 patients

Infusion into a vein for hydration, 31-60 minutes 96360

This is a procedure where a sterile solution is administered into your vein to help restore body fluid balance. It typically lasts between 31-60 minutes. It's a safe, common treatment for dehydration or to deliver medication.

13 services13 patients

Diphtheria, tetanus, and acellular pertussis vaccine (7 years or older) 90715

The Diphtheria, Tetanus, and Acellular Pertussis vaccine, also known as Tdap, is an immunization given to protect against three serious diseases. It's recommended for those aged 7 or older. The vaccine stimulates your body to build defenses against these infections, promoting overall health.

12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Texas Health Presbyterian Hospital Flower Mound

Acute Care Hospitals · Flower Mound, TX

5/5 CMS rating

OwnershipProprietary

CMS Certification Number670068

Location4400 Long Prairie RoadFlower Mound, TX 75028 · Denton County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75028 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$84.92 typical visit price

range $54.84 – $166.88

Typical copayment $21.23 (range $13.71 – $41.72)

Most-billed visit code 99203

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EMERGENCY MEDICINE SPECIALISTS OF NORTH TEXAS PA

Emergency Medicine

4400 LONG PRAIRIE ROAD
FLOWER MOUND, TX 75028

Denton County (512) 452-8533

FLOWER MOUND HOSPITAL PARTNERS, LLC

General Acute Care Hospital

4400 LONG PRAIRIE ROAD
FLOWER MOUND, TX 75028

Denton County (972) 419-6704

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nazanin Williams's NPI number?

The NPI number for Nazanin Williams is 1174855548. It was assigned to this individual provider in the NPPES registry on February 9, 2010.

Where is Nazanin Williams located?

Nazanin Williams practices at 4400 Long Prairie Road, Flower Mound, TX 75028. The listed phone number is (512) 452-8533.

What is Nazanin Williams's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Nazanin Williams enrolled in Medicare?

Yes. Nazanin Williams is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Nazanin Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nazanin Williams reassigns Medicare benefits to 4 organizations: Legacy Urgent Care, PA (Frisco, TX), Frisco Emergency Medicine Associates, PA (Frisco, TX), Pediatric Emergency Medicine Group LLP (Plano, TX) and Travis County Emergency Physicians PA (Austin, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nazanin Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nazanin Williams accept?

Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Molina Healthcare, Sendero Health Plans, Local Nonprofit and UnitedHealthcare list Nazanin Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Nazanin Williams affiliated with any hospitals?

According to CMS data, Nazanin Williams is affiliated with Texas Health Presbyterian Hospital Flower Mound.

When was this NPI record last updated?

The NPPES record for Nazanin Williams was last updated on April 10, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.