Therese Laine Sison
Internal Medicine Physician · Houston, TX
Therese Laine Sison is an internal medicine physician with a practice address in Houston, Texas, and NPI 1841618295, issued on Apr 2, 2014. Check the license (Texas R1455, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Therese Laine Sison
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- R1455 TX
Self-reported in NPPES; status is on the state search - Practice location
- 427 W 20TH St Ste 500, Houston, TX 77008
- Phone
- (713) 363-9830
- Enumerated
- Apr 2, 2014
- Record last updated
- Apr 23, 2025
- Medicaid ID
- 370933903 TX
- Medicare enrollment
- Enrolled (PECOS I20170512001181); accepts Medicare assignment
- Medical or professional school
- University Of Mississippi School Of Medicine, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 427 W 20TH St Ste 500
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Therese Laine Sison in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license R1455Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,147 Medicare Part D claims for 397 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Atorvastatin Calcium208 claims
- Rosuvastatin Calcium199 claims
- Amlodipine Besylate124 claims
- Levothyroxine Sodium115 claims
- Losartan Potassium112 claims
- Lisinopril111 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $792.83
42 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Tmh Physician Associates PLLCHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Therese Laine Sison among 9,175 internal medicine physician records in Texas
Therese Laine Sison is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 69% of them.
- NPI issued2014 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2014 · median 2004 among the 6,088 with a school on file
- Record last updated2025 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,488 internal medicine physician records list a practice address in Houston
They are 1,488 of the 61,221 NPPES records with a practice address in Houston, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Houston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Allison Blazek, M.D.Houston, TX 770081730289695
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- Mingfang Cheng, MDHouston, TX 770081417944943
- Ngan Thien Dao, D.O.Houston, TX 770081376830364
- Salim Gopalani, M.D.,Houston, TX 770081013983782
- Frene' Lacour-Chestnut, M.D.Houston, TX 770081316196884
- Salim Lakhani, M.DHouston, TX 770081972530939
- Dinesh Patel, M.DHouston, TX 770081427050772
Common questions
What is Therese Laine Sison's NPI number?
Therese Laine Sison's National Provider Identifier (NPI) is 1841618295, issued on Apr 2, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Therese Laine Sison located?
The NPPES record lists a practice address at 427 W 20TH St Ste 500, Houston, TX, 77008. Phone: (713) 363-9830. Providers update this record themselves, so call before visiting.
How can I verify Therese Laine Sison's license?
NPPES lists Texas license number R1455, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Therese Laine Sison prescribe under Medicare Part D?
In 2024, Therese Laine Sison had 3,147 Medicare Part D claims for 397 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.