FELIX AMBATTU THOMAS M.D.
NPI 1427412949
Internal Medicine - Cardiovascular Disease in Sugar Land, TX

Q: What is Felix Thomas's NPI number?

The NPI number for Felix Thomas is 1427412949. It was assigned to this individual provider in the NPPES registry on April 11, 2016.

Q: What is Felix Thomas's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Felix Thomas was last updated on December 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 April 11, 2016PECOS EnrolledAccepts Medicare Assignment

16605 SOUTHWEST FWY STE 625, SUGAR LAND, TX 77479(713) 776-9500(713) 400-7220 Get Directions Write a Review

NPPES record last updated: December 6, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Felix Ambattu Thomas M.d. NPPES

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

FELIX AMBATTU THOMAS M.D. (NPI 1427412949) is an individual cardiovascular disease provider in Sugar Land, Texas, licensed in Texas (T5224) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Baylor University Medical Center, and is a graduate of University Of Texas Southwestern Medical School At Dallas (2016).

NPPES Registry Identity

NPI1427412949

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameFELIX AMBATTU THOMASCredential: M.D.

Location Address16605 SOUTHWEST FWY STE 625Sugar Land, TX 77479-3501

Mailing Address8700 Beverly Blvd, 5512West Hollywood, CA 90048-1804

Phone(713) 776-9500

Fax(713) 400-7220

Sole ProprietorYes

Medical School CMSUniversity Of Texas Southwestern Medical School At DallasGraduated 2016

Enumeration DateApril 11, 2016

Last NPPES UpdateDecember 6, 2022

NPPES CertifiedDecember 6, 2022

✔ NPI 1427412949 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in TX · T5224

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

16605 SOUTHWEST FWY STE 625, Sugar Land, TX 77479

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Felix Ambattu Thomas M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4981086089

PECOS Enrollment IDI20220805003025

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 Felix Thomas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Tmh Physician Associates PLLC

16 mi

Ophthalmology

6550 FANNIN ST, SUITE 447
Houston, TX 77030

Reassigned Medicare billing, Texas enrollment
2,407 clinicians in this Medicare group

NPI 1275779225 (713) 441-7389

Healthtexas Provider Network

150 mi

Anesthesiology

100 MEDICAL PKWY
Lakeway, TX 78738

Reassigned Medicare billing, Texas enrollment
3,167 clinicians in this Medicare group

NPI 1104714583 (512) 571-5000

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 19

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.

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.

227 services156 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.

221 services200 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.

135 services135 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

125 services122 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

124 services96 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

114 services114 patients

Mri scan of blood flow of heart 75565

An MRI scan of the heart's blood flow is a non-invasive imaging technique. It uses a magnetic field and radio waves to create detailed images of your heart and its blood vessels. This helps in diagnosing conditions like blockages or abnormalities.

112 services64 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

96 services24 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

73 services70 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

72 services71 patients

Mri scan of heart before and after contrast 75561

An MRI scan of the heart with contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed pictures of your heart. The contrast dye improves the clarity of these images. This test helps in diagnosing heart conditions.

70 services69 patients

Ct scan of blood vessels and grafts of heart with contrast 75574

A CT scan of the heart's blood vessels and grafts with contrast is a diagnostic test. A special dye (contrast) is injected into your veins, which helps create clear images of your heart's vessels and grafts. This helps doctors detect blockages or other abnormalities.

69 services69 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

36 services27 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

28 services28 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

23 services23 patients

Technetium tc-99m tetrofosmin, diagnostic, per study dose A9502

Technetium Tc-99m Tetrofosmin is a radiopharmaceutical used in diagnostic imaging. It helps highlight areas of concern in the heart by emitting signals captured by a special camera. This assists doctors in detecting heart conditions.

21 services21 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.

19 services19 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

19 services19 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.

14 services14 patients

Hospital Affiliations CMS Care Compare 5

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

Baylor University Medical Center

Acute Care Hospitals · Dallas, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number450021

Location3500 Gaston AveDallas, TX 75246 · Dallas County

Emergency services Birthing friendly

Hunt Regional Medical Center

Acute Care Hospitals · Greenville, TX

3/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number450352

Location4215 Joe Ramsey Blvd EGreenville, TX 75401 · Hunt County

Emergency services Birthing friendly

Baylor Scott & White Medical Center- Waxahachie

Acute Care Hospitals · Waxahachie, TX

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450372

Location2400 N Interstate Highway 35EWaxahachie, TX 75165 · Ellis County

Emergency services Birthing friendly

Baylor Scott And White Medical Center Lake Pointe

Acute Care Hospitals · Rowlett, TX

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450742

Location6800 Scenic DrRowlett, TX 75088 · Dallas County

Emergency services Birthing friendly

Baylor Scott & White Heart & Vascular Hospital - Dallas

Acute Care Hospitals · Dallas, TX

5/5 CMS rating

OwnershipProprietary

CMS Certification Number450851

Location621 North Hall StreetDallas, TX 75226 · Dallas County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77479 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

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$68.55 typical visit price

range $17.52 – $136.11

Typical copayment $17.13 (range $4.38 – $34.02)

Most-billed visit code 99213

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

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 Felix Thomas's NPI number?

The NPI number for Felix Thomas is 1427412949. It was assigned to this individual provider in the NPPES registry on April 11, 2016.

Where is Felix Thomas located?

Felix Thomas practices at 16605 Southwest Fwy Ste 625, Sugar Land, TX 77479. The listed phone number is (713) 776-9500.

What is Felix Thomas's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Felix Thomas enrolled in Medicare?

Yes. Felix Thomas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Felix Thomas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Felix Thomas reassigns Medicare benefits to 2 organizations: Tmh Physician Associates PLLC (Houston, TX) and Healthtexas Provider Network (Lakeway, 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 Felix Thomas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Felix Thomas accept?

Health plans from Baylor Scott and White Health Plan and Blue Cross and Blue Shield of Texas list Felix Thomas 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 Felix Thomas affiliated with any hospitals?

According to CMS data, Felix Thomas is affiliated with Baylor University Medical Center, Hunt Regional Medical Center, Baylor Scott & White Medical Center- Waxahachie, Baylor Scott And White Medical Center Lake Pointe and Baylor Scott & White Heart & Vascular Hospital - Dallas.

When was this NPI record last updated?

The NPPES record for Felix Thomas was last updated on December 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.