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Dr. Nancy Esper , MD

Internal Medicine • Bellaire, TX

Active NPI 1013006063 Individual Practitioner Female Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

5959 West Loop S Ste 510
Bellaire, TX 774012406

Call 7134294097 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

5959 West Loop S Ste 510

Bellaire, TX 774012406

Telephone 7134294097
Fax 8322005975
Organization at the Same NPPES Address or Phone
Medical Clinic Of Bellaire Pa Facility NPI 1417959784

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

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

1995

Medicare patients

124 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 $61,042 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 $48,923 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

4,692 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

$318,799 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: $1,368.67 across 60 records.

By nature of payment

  • Food and Beverage: $1,368.67 across 60 records.

Reporting-company totals (3 largest of 20)

  • Amgen Inc.: $338.65 across 13 records.
  • Esperion Therapeutics, Inc.: $140.04 across 8 records.
  • Pfizer Inc.: $130.13 across 5 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. Esper 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. Esper 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 Bellaire and Texas

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Close to the middle for clinicians listed under Internal Medicine in Bellaire, TX (2024, 17 clinicians with data). Median for this group: 938. Middle half: 263 to 1,621.

More 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 60% of clinicians listed under Internal Medicine in Bellaire, TX (2024, 17 clinicians with data). Median for this group: $81,206. Middle half: $22,938 to $159,044.

Close to the middle for 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 60% of clinicians listed under Internal Medicine in Bellaire, TX (2024, 17 clinicians with data). Median for this group: $59,423. Middle half: $17,076 to $125,093.

Close to the middle for 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 Bellaire, TX (2024, 22 clinicians with data). Median for this group: 1,765. Middle half: 207 to 4,854.

More Part D prescriptions than 60% 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 70% of clinicians listed under Internal Medicine in Bellaire, TX (2024, 22 clinicians with data). Median for this group: $198,221. Middle half: $39,380 to $507,764.

A higher Part D drug cost than 65% 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.

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

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

Telehealth indicator in Bellaire

36.7% of these 30 clinicians have the CMS telehealth indicator.

70% of these 30 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): 60 records totaling $1,368.67.

Manufacturer Payment Nature Product Type Amount ($)
Amgen Inc.
Food and Beverage
In-kind items and services
EVENITY General $124.98
HARMONY BIOSCIENCES LLC
Food and Beverage
In-kind items and services
WAKIX General $40.85
Lucid Diagnostics Inc.
Food and Beverage
In-kind items and services
— General $35.00
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $34.76
HARMONY BIOSCIENCES LLC
Food and Beverage
In-kind items and services
WAKIX General $34.05
Astellas Pharma US Inc
Food and Beverage
In-kind items and services
Veozah General $33.34
Eli Lilly and Company
Food and Beverage
In-kind items and services
MOUNJARO General $29.81
Pfizer Inc.
Food and Beverage
In-kind items and services
PREVNAR 20 General $29.06
Pfizer Inc.
Food and Beverage
In-kind items and services
NURTEC ODT General $28.38
Cleerly, Inc.
Food and Beverage
Cash or cash equivalent
Cleerly Ischemia General $26.69
IDORSIA PHARMACEUTICALS US INC
Food and Beverage
In-kind items and services
Quviviq General $26.33
Pfizer Inc.
Food and Beverage
In-kind items and services
NURTEC ODT General $26.04
ABBVIE INC.
Food and Beverage
In-kind items and services
UBRELVY General $25.72
Boehringer Ingelheim Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
OFEV General $25.65
Amgen Inc.
Food and Beverage
In-kind items and services
OTEZLA General $25.21
Paratek Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
XHANCE General $25.20
Esperion Therapeutics, Inc.
Food and Beverage
In-kind items and services
NEXLETOL General $24.37
Pfizer Inc.
Food and Beverage
In-kind items and services
NURTEC ODT General $24.03
Pfizer Inc.
Food and Beverage
In-kind items and services
NURTEC ODT General $22.62
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Wegovy General $22.31
Amgen Inc.
Food and Beverage
In-kind items and services
REPATHA General $22.13
ABBVIE INC.
Food and Beverage
In-kind items and services
QULIPTA General $22.10
Amgen Inc.
Food and Beverage
In-kind items and services
REPATHA General $21.58
Corcept Therapeutics
Food and Beverage
In-kind items and services
Korlym General $21.28
ABBVIE INC.
Food and Beverage
In-kind items and services
UBRELVY General $21.04

(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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
218 102 $224.00 $122.89
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
139 69 $32.00 $16.48
36415 Insertion of needle into vein for collection of blood sample
138 82 $10.00 $8.65
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
83 83 $240.00 $130.06
G0444 Annual depression screening, 5 to 15 minutes
69 69 $37.00 $18.67
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
59 38 $300.00 $178.10
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
58 44 $154.00 $77.87
G0442 Annual alcohol misuse screening, 5 to 15 minutes
47 46 $28.00 $17.57
90653 Influenza vaccine, inactivated
21 21 $140.00 $81.82
G0008 Administration of influenza virus vaccine
21 21 $52.00 $32.75
81002 Urinalysis, manual test
17 11 $20.00 $3.41
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
16 15 $47.00 $23.14

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
Rosuvastatin Calcium Rosuvastatin Calcium 118 10,352 $1,604.29 33
Atorvastatin Calcium Atorvastatin Calcium 114 9,558 $1,183.76 33
Olmesartan Medoxomil Olmesartan Medoxomil 86 6,360 $1,888.79 27
Levothyroxine Sodium Levothyroxine Sodium 85 6,676 $2,157.12 24
Mounjaro Tirzepatide 84 2,690 $97,839.35 11
Metoprolol Succinate Metoprolol Succinate 74 5,374 $2,250.42 19
Amlodipine Besylate Amlodipine Besylate 73 6,016 $524.47 21
Synthroid Levothyroxine Sodium 69 4,900 $5,499.36 19
Hydrochlorothiazide Hydrochlorothiazide 65 5,790 $596.49 22
Ipratropium Bromide Ipratropium Bromide 60 1,631 $1,823.57 30
Ozempic Semaglutide 52 2,324 $71,344.90 —
Lisinopril Lisinopril 44 2,981 $617.59 12
Fluoxetine Hcl Fluoxetine Hcl 44 3,120 $247.23 —
Sertraline Hcl Sertraline Hcl 39 2,144 $410.05 —
Risedronate Sodium Risedronate Sodium 39 3,450 $3,815.78 12
Olmesartan-Hydrochlorothiazide Olmesartan/Hydrochlorothiazide 39 2,883 $742.86 —
Metformin Hcl Er Metformin Hcl 38 3,105 $449.84 11
Omeprazole Omeprazole 37 2,669 $469.08 18
Montelukast Sodium Montelukast Sodium 35 2,790 $437.36 11
Duloxetine Hcl Duloxetine Hcl 35 2,137 $1,216.83 —
Losartan Potassium Losartan Potassium 34 2,460 $356.90 —
Albuterol Sulfate Hfa Albuterol Sulfate 34 934 $893.70 17
Tramadol Hcl Tramadol Hcl 31 597 $165.74 —
Pantoprazole Sodium Pantoprazole Sodium 31 2,310 $486.33 —
Ondansetron Hcl Ondansetron Hcl 31 417 $85.67 14

(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 L4926

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.

Internal Medicine - Sleep Medicine

NUCC Taxonomy Code: 207RS0012X

License # reported to NPPES TX L4926

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

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

Other Identifier Texas Medical License
L4926 (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

I20090820000824

Enrollment State Jurisdiction

TX

PECOS Control ID

1951455245

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.

Clinicians Sharing This Practice Address or Phone

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

1 listed
Dr. Esther Guy , MD

Internal Medicine

NPI 1740399484

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

8 Historical Events
📍
Updated Practice Location February 19, 2019

Registered at 5959 WEST LOOP S STE 510, BELLAIRE, TX 774012406 (Tel: 7134294097)

📍
Updated Business Mailing Address February 19, 2019

Registered at PO BOX 1387, BELLAIRE, TX 774021387 (Tel: 7134294097)

âś…
NPI Profile Active September 02, 2015

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) September 02, 2015

Registered at 6400 FANNIN ST, SUITE 2015, HOUSTON, TX 770301521 (Tel: 8326584050)

📍
Business Mailing Address (Initial Record) September 02, 2015

Registered at 909 FROSTWOOD DR, STE. 1.100, HOUSTON, TX 770242301 (Tel: 7133384523)

👤
Provider Name / Credentials (Initial Record) September 02, 2015

Recorded as NANCY ESPER, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 02, 2015

Internal Medicine (license number reported to NPPES: TX L4926)

🟢
Initial NPI Registration & Enumeration October 11, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1013006063
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 11, 2006
Last Update: February 19, 2019
Sole Proprietor: No

Other Internal Medicine Providers in Bellaire

All Internal Medicine Providers in Bellaire

More public profiles in Texas

Directory navigation, in NPI number order.

Mailing Address

Po Box 1387

Bellaire, TX 774021387

Phone: 7134294097

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.