Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Nam Huu Do , MD

Internal Medicine • Amarillo, TX

Active NPI 1063456572 Individual Practitioner Male Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

1215 S Coulter St, Suite #301
Amarillo, TX 791061758

Call 8063559741 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1215 S Coulter St
Suite #301

Amarillo, TX 791061758

Telephone 8063559741
Fax 8063560045
Organization at the Same NPPES Address or Phone
Nazre Mawla Md Pa Facility NPI 1164502753

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Amarillo Medical Specialists,Llp. 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

Medical School

Texas A & M University System, Hsc, College Of Medicine

Graduation Year

1995

Medicare patients

546 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $838,391 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.

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 $674,468 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

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

20,907 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

$914,392 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

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: $1,919.34 across 118 records.

By nature of payment

  • Food and Beverage: $1,919.34 across 118 records.

Reporting-company totals (3 largest of 19)

  • AstraZeneca Pharmaceuticals LP: $297.08 across 14 records.
  • Novo Nordisk Inc: $284.99 across 17 records.
  • Eli Lilly and Company: $215.44 across 13 records.

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.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

31 years (graduated 1995)

CMS Doctors and Clinicians data list 1995 as the year this clinician finished professional 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

2006

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.

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?”

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

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.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Do 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.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Do 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.

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.

Guide: What ordering and referring status means

Compared with the same specialty in Amarillo and Texas

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Amarillo, TX (2024, 50 clinicians with data). Median for this group: 1,056. Middle half: 635 to 4,913.

More Medicare Part B services than 95% 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 higher Medicare-allowed amount than 95% of clinicians listed under Internal Medicine in Amarillo, TX (2024, 50 clinicians with data). Median for this group: $100,969. Middle half: $49,373 to $237,910.

A higher Medicare-allowed amount than 95% 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 higher Medicare payment amount than 95% of clinicians listed under Internal Medicine in Amarillo, TX (2024, 50 clinicians with data). Median for this group: $79,170. Middle half: $37,380 to $192,270.

A higher Medicare payment amount than 95% 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

More Part D prescriptions than 80% of clinicians listed under Internal Medicine in Amarillo, TX (2024, 51 clinicians with data). Median for this group: 1,912. Middle half: 152 to 7,760.

More Part D prescriptions than 85% of 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

A higher Part D drug cost than 80% of clinicians listed under Internal Medicine in Amarillo, TX (2024, 51 clinicians with data). Median for this group: $252,386. Middle half: $2,856 to $737,537.

A higher Part D drug cost than 90% of 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.

82 active clinicians are listed under Internal Medicine with a practice address in Amarillo, TX (9,191 in Texas).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Amarillo

19.5% of these 82 clinicians have the CMS telehealth indicator.

65.9% of these 82 clinicians are listed by CMS as accepting Medicare assignment.

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

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 118 records totaling $1,919.34.

Manufacturer Payment Nature Product Type Amount ($)
Phathom Pharmaceuticals, Inc.
Food and Beverage
Cash or cash equivalent
VOQUEZNA General $57.52
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
FARXIGA General $55.76
ABBVIE INC.
Food and Beverage
In-kind items and services
VRAYLAR General $33.46
VERTEX PHARMACEUTICALS INCORPORATED
Food and Beverage
In-kind items and services
JOURNAVX General $32.86
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Wegovy General $31.59
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
LEQVIO General $29.93
Janssen Pharmaceuticals, Inc
Food and Beverage
In-kind items and services
SPRAVATO General $27.27
Axsome Therapeutics, Inc.
Food and Beverage
In-kind items and services
Sunosi General $26.32
ABBVIE INC.
Food and Beverage
In-kind items and services
LINZESS General $26.07
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Rybelsus General $25.65
Eli Lilly and Company
Food and Beverage
In-kind items and services
JARDIANCE General $25.04
Bristol Myers Squibb Company
Food and Beverage
Cash or cash equivalent
ELIQUIS General $24.92
Astellas Pharma US Inc
Food and Beverage
In-kind items and services
Veozah General $24.46
Pfizer Inc.
Food and Beverage
In-kind items and services
PAXLOVID General $23.58
Salix Pharmaceuticals, a division of Bausch Health US, LLC
Food and Beverage
In-kind items and services
XIFAXAN General $22.91
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $21.76
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $21.50
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
AIRSUPRA General $21.33
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Wegovy General $21.20
Astellas Pharma US Inc
Food and Beverage
In-kind items and services
Veozah General $21.07
Eli Lilly and Company
Food and Beverage
In-kind items and services
JARDIANCE General $21.02
Eli Lilly and Company
Food and Beverage
In-kind items and services
JARDIANCE General $20.97
Boehringer Ingelheim Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
JARDIANCE General $20.70
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
BREZTRI General $20.64
Pfizer Inc.
Food and Beverage
In-kind items and services
NURTEC ODT General $20.41

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

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
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
2,511 272 $63.09 $59.72
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
2,026 492 $22.90 $15.63
36415 Insertion of needle into vein for collection of blood sample
1,975 530 $9.23 $8.59
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
1,858 533 $142.15 $121.40
80061 Blood test, lipids (cholesterol and triglycerides)
1,662 528 $21.23 $12.96
80053 Blood test, comprehensive group of blood chemicals
1,657 502 $14.91 $10.33
83721 Ldl cholesterol level
861 482 $14.03 $10.19
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
828 467 $11.70 $7.48
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
796 318 $95.50 $86.06
83036 Hemoglobin a1c level
728 270 $15.15 $9.36
81001 Manual urinalysis test with examination using microscope, automated
556 413 $5.17 $3.06
84443 Blood test, thyroid stimulating hormone (tsh)
498 411 $26.02 $16.20
84439 Thyroxine (thyroid chemical), free
467 404 $14.80 $8.73
82607 Cyanocobalamin (vitamin b-12) level
431 343 $24.06 $14.54
80048 Blood test, basic group of blood chemicals (calcium, total)
397 205 $14.16 $7.91
82306 Vitamin d-3 level
391 335 $39.77 $28.54
G0446 Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes
355 355 $25.81 $24.13
99497 Advance care planning, first 30 minutes
341 341 $87.00 $78.68
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
323 323 $116.01 $111.48
G0008 Administration of influenza virus vaccine
293 287 $25.00 $24.50
90673 Influenza vaccine, trivalent derived from recombinant dna
290 290 $120.00 $80.13
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg
262 63 $15.00 $1.27
82550 Creatine kinase (cardiac enzyme) level, total
246 199 $19.03 $6.27
G0444 Annual depression screening, 5 to 15 minutes
238 238 $18.10 $17.35
80076 Liver function blood test panel
216 120 $20.26 $7.34

(top 25 shown)

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.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 853 68,023 $8,385.26 239
Levothyroxine Sodium Levothyroxine Sodium 446 34,432 $4,722.15 135
Amlodipine Besylate Amlodipine Besylate 412 34,047 $2,375.48 136
Losartan Potassium Losartan Potassium 384 32,050 $3,951.51 112
Gabapentin Gabapentin 367 24,564 $7,536.92 115
Lisinopril Lisinopril 338 27,840 $3,001.66 102
Metformin Hcl Er Metformin Hcl 316 25,750 $4,904.84 89
Pantoprazole Sodium Pantoprazole Sodium 294 21,608 $5,144.94 90
Metoprolol Succinate Metoprolol Succinate 264 21,165 $3,449.75 81
Carvedilol Carvedilol 222 17,040 $1,980.46 65
Rosuvastatin Calcium Rosuvastatin Calcium 201 16,990 $5,069.11 63
Mounjaro Tirzepatide 200 7,538 $270,007.22 38
Allopurinol Allopurinol 168 14,170 $1,703.27 49
Alendronate Sodium Alendronate Sodium 167 12,066 $1,257.12 53
Escitalopram Oxalate Escitalopram Oxalate 158 11,583 $2,004.43 50
Duloxetine Hcl Duloxetine Hcl 147 9,543 $5,452.58 38
Meloxicam Meloxicam 145 7,575 $800.27 52
Azelastine Hcl Azelastine Hcl 142 7,584 $4,715.77 64
Omeprazole Omeprazole 138 10,523 $1,513.46 40
Amlodipine Besylate-Benazepril Amlodipine Besylate/Benazepril 131 11,535 $2,370.56 39
Mirtazapine Mirtazapine 131 7,719 $2,066.49 38
Trazodone Hcl Trazodone Hcl 129 9,499 $923.17 44
Furosemide Furosemide 128 9,444 $502.74 53
Pioglitazone Hcl Pioglitazone Hcl 107 8,040 $860.48 30
Ezetimibe Ezetimibe 101 7,350 $1,414.77 29

(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

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES TX K0287

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Texas Medical Board.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
040113502 (TX)
Other Identifier Bcbs
0051MB (TX)
Other Identifier First Care
111751102 (TX)
Other Identifier State License
K0287 (TX)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20041204000081

Enrollment State Jurisdiction

TX

PECOS Control ID

4880650589

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

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

Amarillo Medical Specialists,llp

9092 Westgate Pkwy W, Amarillo, TX 791242441

Phone: 8063588331

Amarillo Medical Specialists,llp

1900 Coulter Dr, Amarillo, TX 791061753

Phone: 8063588331

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

40 listed
Dr. Estelle Archer , MD

Obstetrics & Gynecology

NPI 1134179492

Doctor of Medicine (M.D.)

NPI 1275858433

Doctor of Medicine (M.D.)

Janet Barraza , FNP-C

Nurse Practitioner - Family

NPI 1306546932

Family Nurse Practitioner (Certified)

Mary Benard , FNP

Nurse Practitioner - Family

NPI 1962861864

Family Nurse Practitioner

Tiffani Bethel

Nurse Practitioner - Family

NPI 1598413825
Amy Brasher , FNP

Family Medicine

NPI 1922133966

Family Nurse Practitioner

Career & Practice History

NPI enumerated June 15, 2006.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

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NPI Administrative Meta

NPI Number: 1063456572
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 15, 2006
Last Update: March 07, 2023
Sole Proprietor: No

Other Internal Medicine Providers in Amarillo

All Internal Medicine Providers in Amarillo

More public profiles in Texas

Directory navigation, in NPI number order.

Mailing Address

1215 S Coulter St, Suite #301

Amarillo, TX 791061758

Phone: 8063559741

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.