Dr. Thomas S. Granchi, MD

  • Webster, TX
  • General surgeon
NPI1770663023PAC ID0941363923
Medicare services, 2024
160
Medicare patients, 2024
110
Publications
23
Clinical trials
1
Hospital affiliations
3
Practice address
500 W Medical Center Blvd, Webster, TX 77598
Practice phone
Call (281) 332-2511
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

HCA Houston Healthcare Clear Lake

Hospital · Webster, Texas

See all 5 affiliations

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Dr. Thomas S. Granchi is a general surgeon in Webster, Texas

Dr. Granchi practices at HCA Houston Healthcare Clear Lake in Webster, Texas, part of HCA Healthcare.

Dr. Granchi's NPI, 1770663023, was assigned on October 17, 2006. Dr. Granchi graduated from Ohio State College of Medicine in 1988. Dr. Granchi's Iowa license number on file is 41247.

NPI and contact details
Medicare PAC ID
0941363923
NPI enumeration date
October 17, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(281) 332-2511
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
64
Medical school graduation
1988

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Thomas S. Granchi practices at HCA Houston Healthcare Clear Lake in Webster, Texas

Dr. Granchi's primary practice is HCA Houston Healthcare Clear Lake, at 500 W Medical Center Blvd, Webster, TX 77598 in Harris County. The practice phone is (281) 332-2511.

Source: Dmand AI Affiliation Data

Dr. Thomas S. Granchi is affiliated with 3 sites of care and 2 medical groups

Dr. Granchi's primary practice is HCA Houston Healthcare Clear Lake in Webster, Texas, part of HCA Healthcare. Dr. Granchi is also affiliated with Corpus Christi Medical Center Doctors Regional. The medical group on file is Extant Healthcare. Dmand AI also links Dr. Granchi to 1 more hospital and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Granchi

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Thomas S. Granchi's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Granchi practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
HCA Houston Healthcare Clear LakeAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Thomas S. Granchi is one of 1,939 general surgeons in Texas

Surgery is Dr. Granchi's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Granchi is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Granchi's licenses on file in 5 states: Iowa, Georgia, Florida, Texas and Alabama.

Specialties and state licenses

  • Surgery, IowaPrimaryLicense 41247 · 2013 to 2021 · taxonomy 208600000X
  • Georgia license2019 to 2027
  • Florida license2012 to 2026
  • Texas licenseLicense H6252 · 1989 to 2026
  • Alabama license1993 to 1995

Clinical focus

Dmand AI lists chest trauma, gallbladder removal and traumatic coma among the conditions Dr. Granchi treats.

General surgeons near Dr. Granchi

Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Thomas S. Granchi billed Medicare for 160 services in 2024

CMS data shows 160 Medicare services from Dr. Granchi across 5 procedure codes in 2024, for 110 Medicare patients. Medicare paid $17,970 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024160
Medicare patients110
Paid by Medicare$17,970
Procedure codes5

Dr. Granchi's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 922024: 16074%

Dr. Granchi compared with the Texas median for general surgeons, 2024

  • Dr. Granchi
  • Texas median
Medicare services
160vs 11836% above
Medicare patients
110vs 9713% above

Medians across 1,674 general surgeons in Texas with Dmand AI profiles that report each measure.

Dr. Granchi's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Granchi

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Granchi and other general surgeons in Texas.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Thomas S. Granchi treated 110 Medicare patients in 2024, average age 81

CMS counts 110 Medicare patients who saw Dr. Granchi in 2024. The largest group is 75 to 84, with 42 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.85, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Granchi's median patient age at 59, with 47% women.

Medicare patients, 2024110
Average age81
Average risk score1.85

Dr. Granchi's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Granchi's Medicare patients by sex, 2024

  • Women6458%
  • Men4642%

Chronic conditions among Dr. Granchi's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis54%
  4. Ischemic heart disease52%
  5. Heart failure47%
  6. Chronic kidney disease44%
  7. Atrial fibrillation43%
  8. Mood disorders39%

Share of Medicare patients with each condition. A patient can have several.

Dr. Granchi's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 59

Patient panel by sex, all payers

  • Women47%
  • Men52%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

How Dr. Thomas S. Granchi takes part in Medicare

Dr. Granchi accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Thomas S. Granchi has 23 publications on record

Dmand AI links 23 papers to Dr. Granchi, published from 2010 to 2023. 2020 was the busiest year, with 2. The most frequent topics are Wounds and Injuries, Breast Neoplasms and Abdominal Injuries. Dr. Granchi has published most often in Am J Surg. Dr. Granchi's most frequent co-authors are Matthew Wall, MD, Kenneth L. Mattox, MD and Kathleen R. Liscum, MD.

Papers23
Years published2010 to 2023

Dr. Granchi's papers by year, 2010 to 2023

Topics Dr. Granchi writes about most

  • Wounds and Injuries
  • Breast Neoplasms
  • Abdominal Injuries
  • Burns
  • Educational Status
  • Wounds, Penetrating
  • Blood Vessel Prosthesis
  • Blood Vessel Prosthesis Implantation

Dr. Granchi's most frequent co-authors

Recent publications by Dr. Granchi

See all 23 publications and co-authors

See who Dr. Granchi researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Granchi works with, so you can find a warm path to the right general surgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Thomas S. Granchi has worked on 1 clinical trial

Dmand AI links Dr. Granchi to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Abdominal Abscess and Abscess.

Conditions in Dr. Granchi's trials

  • Abdominal Abscess
  • Abscess

Recent clinical trials with Dr. Granchi

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Thomas S. Granchi received $461 in industry payments from 2020 to 2025

CMS Open Payments shows 12 general payments to Dr. Granchi from 8 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 100% of the total. Ethicon Inc. paid the most, $179.

General payments to Dr. Granchi by program year, 2020 to 2025

Companies that paid Dr. Granchi the most, 2020 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Granchi

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Thomas S. Granchi has 1 award and honors on record

Dmand AI lists 1 award for Dr. Granchi.

Awards and honors for Dr. Granchi

  1. Undated
    • ACS Fellow

Source: Dmand AI Professional Profile Data

Dr. Thomas S. Granchi graduated from Ohio State College of Medicine

Dr. Granchi graduated from Ohio State College of Medicine in 1988. Dr. Granchi is a member of American Association for Surgery of Trauma, American Burn Association, SCCM, ACS and Texas Surgical Society.

  1. Medical schoolOhio State College of Medicine
  2. Board certified in surgeryAmerican Board of Surgery
  3. Board certified in surgical critical careAmerican Board of Surgery

Source: Dmand AI Professional Profile Data

Dr. Thomas S. Granchi accepts plans from 21 insurance carriers

Dr. Granchi is in network with 21 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Aetna. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Aetna
  • Cigna
  • Elevance
  • Alliant Health Plans
  • Aspirus Health Plan
  • Blue Cross Blue Shield of Massachusetts
  • +13 more carriersWith a free account

Plan types Dr. Granchi accepts, by number of carriers

  1. PPO12
  2. HMO11
  3. Medicare6
  4. EPO4
  5. POS4
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Thomas S. Granchi's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Thomas S. Granchi

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Thomas S. Granchi's NPI number?

Dr. Thomas S. Granchi's NPI number is 1770663023. It was assigned on October 17, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Thomas S. Granchi?

Dr. Thomas S. Granchi is a general surgeon in Webster, Texas. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).

Where does Dr. Thomas S. Granchi practice?

Dr. Granchi practices at 500 W Medical Center Blvd, Webster, TX 77598. Dr. Granchi's primary practice is HCA Houston Healthcare Clear Lake in Webster, Texas, part of HCA Healthcare. Dmand AI also links Dr. Granchi to 1 hospital and 1 medical group.

What is Dr. Thomas S. Granchi's office phone number?

The practice phone on file for Dr. Granchi is (281) 332-2511.

What is Dr. Thomas S. Granchi's medical license number?

Dr. Granchi's Iowa license number on file is 41247, one of the licenses on file in 5 states.

Which states has Dr. Thomas S. Granchi been licensed in?

Dmand AI has state licenses on file for Dr. Granchi in Iowa (2013 to 2021), Georgia (2019 to 2027), Florida (2012 to 2026), Texas (1989 to 2026) and Alabama (1993 to 1995).

Which hospitals is Dr. Thomas S. Granchi affiliated with?

Dr. Granchi practices at HCA Houston Healthcare Clear Lake in Webster, Texas. Dr. Granchi is also affiliated with Corpus Christi Medical Center Doctors Regional. Dmand AI links Dr. Granchi to 1 more hospital.

What medical group is Dr. Thomas S. Granchi part of?

Dr. Granchi is linked to Extant Healthcare. Dmand AI links Dr. Granchi to 1 more medical group.

Does Dr. Thomas S. Granchi accept Medicare?

Yes. CMS data shows Dr. Granchi billed Medicare for 160 services in 2024, and Dr. Granchi accepts Medicare assignment.

How many Medicare patients does Dr. Thomas S. Granchi see?

CMS counts 110 Medicare patients who saw Dr. Granchi in 2024, with an average age of 81.

Show 8 more questionsShow fewer questions

Is Dr. Thomas S. Granchi board certified?

Yes. Dr. Granchi is board certified in surgery by the American Board of Surgery.

What services does Dr. Thomas S. Granchi bill to Medicare?

In 2024, Dr. Granchi's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and critical care (99291).

Where did Dr. Thomas S. Granchi go to medical school?

Dr. Granchi graduated from Ohio State College of Medicine in 1988.

Has Dr. Thomas S. Granchi received payments from drug or device companies?

CMS Open Payments shows $461 in general payments to Dr. Granchi from 8 companies from 2020 to 2025. The largest total came from Ethicon Inc.

How long has Dr. Thomas S. Granchi been practicing?

Dr. Granchi graduated from medical school in 1988, 38 years ago.

Does Dr. Thomas S. Granchi do research?

Dmand AI links 23 publications to Dr. Granchi, published from 2010 to 2023. Dr. Granchi has worked on 1 clinical trial.

Who does Dr. Thomas S. Granchi publish with?

Dr. Granchi's most frequent co-authors are Matthew Wall, MD (11 shared papers), Kenneth L. Mattox, MD (10 shared papers) and Kathleen R. Liscum, MD (7 shared papers).

What insurance does Dr. Thomas S. Granchi accept?

Dr. Granchi is in network with 21 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Aetna. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

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