Dr. Thomas W. Porter , MD
Internal Medicine • Pasadena, TX
927 Shaw Ave
Pasadena, TX 775061430
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. Thomas Porter is listed in NPPES under Internal Medicine.
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NPI assigned on September 26, 2006; this date does not establish years in practice.
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Published CMS data list 408 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:
- 99308 — Subsequent nursing facility care with straightforward level of medical decision making, per day: 293 service units.
- 99214 — Established patient outpatient office visit: 44 service units.
- 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: 38 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 4 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 8,676 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 — 677 prescription fills, including refills.
- Amlodipine Besylate — 306 prescription fills, including refills.
- Eliquis (Apixaban) — 270 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 153 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 80% of clinicians listed under Internal Medicine in Pasadena, TX (2024, 21 clinicians with data). Median for this group: 774. Middle half: 451 to 1,517.
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 1,557 in 2020 to 408 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
927 Shaw Ave
Pasadena, TX 775061430
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Baylor College Of Medicine. 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
University Of Michigan Medical School
1989
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
51 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 $31,524 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 $23,277 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
9,883 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
$580,008 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 2020
All general payments: $62.14 across 3 records.
By nature of payment
- Food and Beverage: $62.14 across 3 records.
Reporting-company totals
- Janssen Pharmaceuticals, Inc: $45.14 across 2 records.
- Sunovion Pharmaceuticals Inc.: $17.00 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 2020 (published June 30, 2026).
Years since graduation
37 years (graduated 1989)
CMS Doctors and Clinicians data list 1989 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
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.
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?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Porter 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. Porter 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 Pasadena and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 80% of clinicians listed under Internal Medicine in Pasadena, TX (2024, 21 clinicians with data). Median for this group: 774. Middle half: 451 to 1,517.
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 80% of clinicians listed under Internal Medicine in Pasadena, TX (2024, 21 clinicians with data). Median for this group: $60,592. Middle half: $33,079 to $120,145.
A lower Medicare-allowed amount than 70% 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 70% of clinicians listed under Internal Medicine in Pasadena, TX (2024, 21 clinicians with data). Median for this group: $50,710. Middle half: $22,690 to $93,658.
A lower Medicare payment amount than 70% 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 60% of clinicians listed under Internal Medicine in Pasadena, TX (2024, 29 clinicians with data). Median for this group: 4,564. Middle half: 829 to 9,211.
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
Close to the middle for clinicians listed under Internal Medicine in Pasadena, TX (2024, 29 clinicians with data). Median for this group: $433,560. Middle half: $34,295 to $709,845.
A higher Part D drug cost than 80% 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.
32 active clinicians are listed under Internal Medicine with a practice address in Pasadena, TX (9,191 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Pasadena
21.9% 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 decreased 74% from 1,557 in 2020 to 408 in 2024.
- 2020: 1,557
- 2021: 1,196
- 2022: 707
- 2023: 499
- 2024: 408
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Medicare-allowed amount
Medicare-allowed amount decreased 73% from $115,890 in 2020 to $31,524 in 2024.
- 2020: $115,890
- 2021: $92,882
- 2022: $57,164
- 2023: $42,413
- 2024: $31,524
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Paid by Medicare
Paid by Medicare decreased 74% from $90,364 in 2020 to $23,277 in 2024.
- 2020: $90,364
- 2021: $72,671
- 2022: $43,512
- 2023: $32,724
- 2024: $23,277
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 16% from 10,328 in 2020 to 8,676 in 2024.
- 2020: 10,328
- 2021: 10,449
- 2022: 9,669
- 2023: 8,952
- 2024: 8,676
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30-day fills
30-day fills decreased 23% from 12,810 in 2020 to 9,883 in 2024.
- 2020: 12,810
- 2021: 12,613
- 2022: 10,894
- 2023: 9,983
- 2024: 9,883
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Part D drug cost
Part D drug cost decreased 25% from $769,493 in 2020 to $580,008 in 2024.
- 2020: $769,493
- 2021: $674,065
- 2022: $563,787
- 2023: $595,562
- 2024: $580,008
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2020 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2020), 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 2020 (payments made January 1 – December 31, 2020): fewer than 11 records totaling $62.14.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
XARELTO | General | $24.24 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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XARELTO | General | $20.90 |
| Sunovion Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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KYNMOBI | General | $17.00 |
Source: CMS Open Payments, program year 2020, 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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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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293 | 17 | $90.00 | $74.41 |
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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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44 | 29 | $280.73 | $97.77 |
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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
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38 | 23 | $46.00 | $16.52 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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33 | 19 | $405.18 | $145.23 |
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 | 677 | 24,093 | $10,257.46 | 112 |
| Amlodipine Besylate | Amlodipine Besylate | 306 | 12,205 | $3,038.63 | 62 |
| Eliquis | Apixaban | 270 | 4,938 | $82,170.35 | 26 |
| Donepezil Hcl | Donepezil Hcl | 231 | 6,711 | $3,846.69 | 24 |
| Lisinopril | Lisinopril | 230 | 9,060 | $2,853.72 | 46 |
| Levothyroxine Sodium | Levothyroxine Sodium | 227 | 7,538 | $3,204.24 | 34 |
| Sertraline Hcl | Sertraline Hcl | 224 | 6,514 | $3,228.64 | 28 |
| Divalproex Sodium | Divalproex Sodium | 218 | 6,981 | $12,748.87 | 30 |
| Trazodone Hcl | Trazodone Hcl | 213 | 5,843 | $3,186.33 | 23 |
| Furosemide | Furosemide | 188 | 5,640 | $1,193.93 | 30 |
| Potassium Chloride | Potassium Chloride | 181 | 4,561 | $3,304.91 | 31 |
| Carvedilol | Carvedilol | 178 | 5,623 | $2,580.49 | 26 |
| Gabapentin | Gabapentin | 165 | 5,280 | $3,656.33 | 26 |
| Omeprazole | Omeprazole | 149 | 4,894 | $1,964.39 | 25 |
| Tamsulosin Hcl | Tamsulosin Hcl | 143 | 5,506 | $2,484.14 | 28 |
| Buspirone Hcl | Buspirone Hcl | 138 | 4,166 | $2,489.26 | 20 |
| Famotidine | Famotidine | 135 | 4,505 | $1,574.68 | 23 |
| Memantine Hcl | Memantine Hcl | 130 | 3,727 | $4,683.69 | 18 |
| Risperidone | Risperidone | 129 | 3,838 | $3,679.45 | 15 |
| Mirtazapine | Mirtazapine | 124 | 3,628 | $2,962.14 | 22 |
| Lactulose | Lactulose | 123 | 1,467 | $3,371.97 | 25 |
| Levetiracetam | Levetiracetam | 118 | 3,092 | $4,790.87 | — |
| Losartan Potassium | Losartan Potassium | 107 | 3,734 | $1,554.73 | 22 |
| Metformin Hcl | Metformin Hcl | 107 | 4,490 | $1,399.91 | 28 |
| Pantoprazole Sodium | Pantoprazole Sodium | 100 | 3,091 | $5,929.29 | 17 |
(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
NUCC 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: 207P00000X
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.
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20050621001284
TX
3375588254
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
Baylor College Of Medicine
1504 Taub Loop, Houston, TX 770301608
Phone: 7138732000
Baylor College Of Medicine
1502 Taub Loop, Houston, TX 770301608
Phone: 7138734900
Baylor College Of Medicine
927 Shaw Ave, Pasadena, TX 775061430
Phone: 7134776851
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.)
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Family Nurse Practitioner
Internal Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated September 26, 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.
NPI Administrative Meta
Other Internal Medicine Providers in Pasadena
- Dr. Silvia Boccardo-Sabatini, MD
- Dr. Saher Amin, MD
- Dr. Durga Sunkara, MD
- Dr. Yusra Azhar, MD
- Dr. Xiao Li, MD
- Dr. Carlos Aguilar, MD
Mailing Address
7830 Moonlight Ct
Missouri City, TX 77459
Phone: 2814313488