Dr. Thomas Gregory Chaisson, MD
- Medicare services, 2024
- 6,904
- Medicare patients, 2026
- 816
- Part D claims, 2026
- 14,014
- Hospital affiliations
- 4
- Industry payments
- $4,114
- Practice address
- 602 N Acadia Road, Thibodaux, LA 70301
- Practice phone
- Call (985) 447-5500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chaisson's professional email, personal email and mobile number
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Dr. Thomas Gregory Chaisson is a general practice physician in Thibodaux, Louisiana
Dr. Chaisson practices at Thibodaux Regional Health System in Thibodaux, Louisiana, part of Thibodaux Regional Medical Center.
Dr. Chaisson's NPI, 1902895279, was assigned on October 19, 2005. Dr. Chaisson graduated from Louisiana State University School of Medicine in New Orleans in 1991. Dr. Chaisson holds Louisiana license 09201R.
- NPI
- 1902895279NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204894785
- NPI enumeration date
- October 19, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (985) 447-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Gregory Chaisson practices at Thibodaux Regional Health System in Thibodaux, Louisiana
Dr. Chaisson's primary practice is Thibodaux Regional Health System, at 602 N Acadia Road, Thibodaux, LA 70301 in Lafourche Parish. The practice phone is (985) 447-5500.
- Thibodaux Regional Health System602 N Acadia Road, Thibodaux, LA 70301 · Lafourche ParishPhone(985) 447-5500
Source: Dmand AI Affiliation Data
Dr. Thomas Gregory Chaisson is affiliated with 11 sites of care and 1 medical group
Dr. Chaisson's primary practice is Thibodaux Regional Health System in Thibodaux, Louisiana, part of Thibodaux Regional Medical Center. Dr. Chaisson is also affiliated with Terrebonne General Health System. The medical group on file is Regional Internal Medicine Associates. Dmand AI also links Dr. Chaisson to 2 more hospitals, 3 home health agencies, 2 skilled nursing facilities, 1 group practice or clinic and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas Gregory Chaisson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chaisson practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Thibodaux Regional Health System | Available with a free account |
| +10 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Thibodaux Regional Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Thomas Gregory Chaisson is one of 111 general practice physicians in Louisiana
General practice is Dr. Chaisson's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Chaisson is licensed in Louisiana.
Specialties and state licenses
- General practice, LouisianaPrimary
General practice physicians near Dr. Chaisson
Counts of general practice physicians 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 Gregory Chaisson billed Medicare for 6,904 services in 2024
CMS data shows 6,904 Medicare services from Dr. Chaisson across 29 procedure codes in 2024, for 816 Medicare patients. Medicare paid $176,542 for them. Every service was in an office.
Dr. Chaisson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,2322024: 2,229No change
- Other services
- 2023: 7672024: 1,579106%
- Surgery
- 2023: 9852024: 9345%
- Drugs given in the office
- 2023: 7092024: 82717%
- Lab and pathology
- 2023: 7322024: 7928%
- Tests and treatments
- 2023: 4842024: 4605%
- Imaging
- 2023: 672024: 8324%
Dr. Chaisson compared with the Louisiana median for general practice physicians, 2024
- Dr. Chaisson
- Louisiana median
- Medicare services
- 6,904vs 18637.1 times
- Medicare patients
- 816vs 1356.0 times
- Part D claims
- 13,321vs 116114.8 times
Medians across 121 general practice physicians in Louisiana with Dmand AI profiles that report each measure.
Dr. Chaisson'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.
Need commercial claims for Dr. Chaisson?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chaisson and other general practice physicians in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Gregory Chaisson treated 816 Medicare patients in 2026, average age 77
CMS counts 816 Medicare patients who saw Dr. Chaisson in 2026. The largest group is 65 to 74, with 323 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chaisson's median patient age at 70, with 57% women.
Dr. Chaisson's Medicare patients by age, 2026
Dr. Chaisson's Medicare patients by sex, 2026
- Women48760%
- Men32940%
Chronic conditions among Dr. Chaisson's Medicare patients, 2026
- High blood pressure75%
- High cholesterol75%
- Diabetes39%
- Ischemic heart disease39%
- Arthritis38%
- Mood disorders32%
- Depression31%
- Anxiety26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chaisson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
Dr. Thomas Gregory Chaisson wrote 14,014 Medicare Part D claims in 2026
In 2026, Dr. Chaisson wrote 14,014 Medicare Part D claims for 940 patients. 88% of them were for generic drugs. CMS names the drug for 13,321 of them, across 186 drugs with 11 or more claims each, at $664,191 in total drug cost. In 2023, CMS named 14,282 claims across 200 drugs.
Dr. Chaisson's Part D claims by kind of drug, 2026
- Generic12,313 claims88%
- Brand-name1,566 claims11%
- Other135 claims1%
Dr. Chaisson's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chaisson's Part D claims, 2026
- Opioids1%104 of 14,014 claims
- Antibiotics4%562 of 14,014 claims
- Antipsychotics, patients 65 and over0%64 of 14,014 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 14,2822024: 13,3217%
Drugs named by CMS: 186 in 2024, 200 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2026 data
How Dr. Thomas Gregory Chaisson takes part in Medicare
Dr. Chaisson 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 Gregory Chaisson received $4,114 in industry payments from 2016 to 2025
CMS Open Payments shows 258 general payments to Dr. Chaisson from 46 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $489.
General payments to Dr. Chaisson by program year, 2016 to 2025
Companies that paid Dr. Chaisson the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Gregory Chaisson graduated from Louisiana State University School of Medicine in New Orleans
Dr. Chaisson graduated from Louisiana State University School of Medicine in New Orleans in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas Gregory Chaisson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas Gregory Chaisson
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 Gregory Chaisson's NPI number?
Dr. Thomas Gregory Chaisson's NPI number is 1902895279. It was assigned on October 19, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Gregory Chaisson?
Dr. Thomas Gregory Chaisson is a general practice physician in Thibodaux, Louisiana. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Thomas Gregory Chaisson practice?
Dr. Chaisson practices at 602 N Acadia Road, Thibodaux, LA 70301. Dr. Chaisson's primary practice is Thibodaux Regional Health System in Thibodaux, Louisiana, part of Thibodaux Regional Medical Center. Dmand AI also links Dr. Chaisson to 2 hospitals, 3 home health agencies, 2 skilled nursing facilities, 1 group practice or clinic and 1 hospice, and a free account names each one.
What is Dr. Thomas Gregory Chaisson's office phone number?
The practice phone on file for Dr. Chaisson is (985) 447-5500. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Thomas Gregory Chaisson's email address?
Dmand AI checks professional and personal email addresses for Dr. Chaisson through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Thomas Gregory Chaisson's medical license number?
Dr. Chaisson holds Louisiana license 09201R.
Which hospitals is Dr. Thomas Gregory Chaisson affiliated with?
Dr. Chaisson practices at Thibodaux Regional Health System in Thibodaux, Louisiana. Dr. Chaisson is also affiliated with Terrebonne General Health System. Dmand AI links Dr. Chaisson to 2 more hospitals, named with a free account.
What medical group is Dr. Thomas Gregory Chaisson part of?
Dr. Chaisson is linked to Regional Internal Medicine Associates.
Who does Dr. Thomas Gregory Chaisson practice with?
Dmand AI links 2 HCPs to Dr. Chaisson's primary medical group, 1 of them general practice physician. A free account lists them, with verified contacts.
Does Dr. Thomas Gregory Chaisson accept Medicare?
Yes. CMS data shows Dr. Chaisson billed Medicare for 6,904 services in 2024, and Dr. Chaisson accepts Medicare assignment.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Thomas Gregory Chaisson see?
CMS counts 816 Medicare patients who saw Dr. Chaisson in 2026, with an average age of 77.
What services does Dr. Thomas Gregory Chaisson bill to Medicare?
In 2024, Dr. Chaisson's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and surgery: heart and blood vessels (36415).
Where did Dr. Thomas Gregory Chaisson go to medical school?
Dr. Chaisson graduated from Louisiana State University School of Medicine in New Orleans in 1991.
What drugs does Dr. Thomas Gregory Chaisson prescribe most?
In 2024 Medicare Part D data, Dr. Chaisson's most prescribed drugs by claims were Levothyroxine Sodium, Alprazolam and Pantoprazole Sodium.
Has Dr. Thomas Gregory Chaisson received payments from drug or device companies?
CMS Open Payments shows $4,114 in general payments to Dr. Chaisson from 46 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Thomas Gregory Chaisson been practicing?
Dr. Chaisson graduated from medical school in 1991, 35 years ago.
What EHR does Dr. Thomas Gregory Chaisson's practice use?
Dmand AI tracks the EHR system at Thibodaux Regional Health System and at 10 more affiliated sites. The vendor and product are available with a free Dmand AI account.
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