Dr. Gregory Martin Kwok, MD
- Medicare services, 2024
- 1,694
- Medicare patients, 2024
- 736
- Part D claims, 2024
- 1,389
- MIPS score, 2024
- 100
- Industry payments
- $9,423
- Practice address
- 6950 S Cimarron Road, Suite 100, Las Vegas, NV 89113
- Practice phone
- Call (702) 952-1660
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ambulatory Surgical Center of Southern Nevada
Surgery Center - Medicare-Certified · Las Vegas, Nevada
Find Dr. Kwok's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gregory Martin Kwok is a gastroenterologist in Las Vegas, Nevada
Dr. Kwok practices at Ambulatory Surgical Center of Southern Nevada in Las Vegas, Nevada.
Dr. Kwok's NPI, 1952353997, was assigned on May 17, 2006. Dr. Kwok graduated from University of Texas Southwestern Medical School at Dallas in 1990. Dr. Kwok holds Nevada license 7407.
- NPI
- 1952353997NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466430053
- NPI enumeration date
- May 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (702) 952-1660
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Martin Kwok practices at Ambulatory Surgical Center of Southern Nevada in Las Vegas, Nevada
Dr. Kwok's primary practice is Ambulatory Surgical Center of Southern Nevada, at 6950 S Cimarron Road, Suite 100, Las Vegas, NV 89113. The practice phone is (702) 952-1660.
- Ambulatory Surgical Center of Southern Nevada6950 S Cimarron Road, Suite 100, Las Vegas, NV 89113Phone(702) 952-1660
Source: Dmand AI Affiliation Data
Dr. Gregory Martin Kwok is affiliated with 2 sites of care and 1 medical group
Dr. Kwok's primary practice is Ambulatory Surgical Center of Southern Nevada in Las Vegas, Nevada. The medical group on file is Gastroenterology Associates. Dmand AI also links Dr. Kwok to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Martin Kwok's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kwok practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ambulatory Surgical Center of Southern Nevada | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Martin Kwok is one of 107 gastroenterologists in Nevada
Gastroenterology is Dr. Kwok's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Kwok is licensed in Nevada.
Specialties and state licenses
- Gastroenterology, NevadaPrimary
Gastroenterologists near Dr. Kwok
Counts of gastroenterologists 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. Gregory Martin Kwok billed Medicare for 1,694 services in 2024
CMS data shows 1,694 Medicare services from Dr. Kwok across 14 procedure codes in 2024, for 736 Medicare patients. Medicare paid $160,460 for them.
Dr. Kwok's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0122024: 1,0181%
- Surgery
- 2023: 5612024: 6088%
- Other services
- 2023: 692024: 681%
Where Dr. Kwok's Medicare services took place, 2024
- In an office1,01860%
- In a facility67640%
Dr. Kwok compared with the Nevada median for gastroenterologists, 2024
- Dr. Kwok
- Nevada median
- Medicare services
- 1,694vs 7582.2 times
- Medicare patients
- 736vs 40084% above
- Part D claims
- 1,161vs 59495% above
Medians across 106 gastroenterologists in Nevada with Dmand AI profiles that report each measure.
Dr. Kwok'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kwok and other gastroenterologists in Nevada.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Martin Kwok treated 736 Medicare patients in 2024, average age 75
CMS counts 736 Medicare patients who saw Dr. Kwok in 2024. The largest group is 65 to 74, with 343 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kwok's median patient age at 66, with 59% women.
Dr. Kwok's Medicare patients by age, 2024
Dr. Kwok's Medicare patients by sex, 2024
- Women44460%
- Men29240%
Chronic conditions among Dr. Kwok's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Ischemic heart disease34%
- Diabetes32%
- Anxiety25%
- Chronic kidney disease23%
- Osteoporosis21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kwok's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women59%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Martin Kwok wrote 1,389 Medicare Part D claims in 2024
In 2024, Dr. Kwok wrote 1,389 Medicare Part D claims for 399 patients. 81% of them were for generic drugs. CMS names the drug for 1,161 of them, across 24 drugs with 11 or more claims each, at $526,701 in total drug cost. In 2023, CMS named 1,194 claims across 24 drugs.
Dr. Kwok's Part D claims by kind of drug, 2024
- Generic1,130 claims81%
- Brand-name259 claims19%
Dr. Kwok'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. Kwok's Part D claims, 2024
- Antibiotics4%62 of 1,389 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: 1,1942024: 1,1613%
Drugs named by CMS: 24 in 2024, 24 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), 2024 data
Dr. Gregory Martin Kwok scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Kwok for performance year 2024, reported as part of a group. Dr. Kwok accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 206 procedures of colonoscopy by Dr. Kwok, more than 94% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Kwok's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Kwok ranks in Medicare procedure volume
- Colonoscopy
- 94th percentile206 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 89th percentile185 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gregory Martin Kwok received $9,423 in industry payments from 2016 to 2025
CMS Open Payments shows 503 general payments to Dr. Kwok from 36 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Abbvie Inc. paid the most, $2,192.
General payments to Dr. Kwok by program year, 2016 to 2025
General payments to Dr. Kwok by kind, 2016 to 2025
- Food and beverage$8,79793%
- Travel and lodging$4675%
- Education$1592%
Companies that paid Dr. Kwok 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. Gregory Martin Kwok graduated from University of Texas Southwestern Medical School at Dallas
Dr. Kwok graduated from University of Texas Southwestern Medical School at Dallas in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Martin Kwok'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Gregory Martin Kwok
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. Gregory Martin Kwok's NPI number?
Dr. Gregory Martin Kwok's NPI number is 1952353997. It was assigned on May 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Martin Kwok?
Dr. Gregory Martin Kwok is a gastroenterologist in Las Vegas, Nevada. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Gregory Martin Kwok practice?
Dr. Kwok practices at 6950 S Cimarron Road, Suite 100, Las Vegas, NV 89113. Dr. Kwok's primary practice is Ambulatory Surgical Center of Southern Nevada in Las Vegas, Nevada. Dmand AI also links Dr. Kwok to 1 group practice or clinic.
What is Dr. Gregory Martin Kwok's office phone number?
The practice phone on file for Dr. Kwok is (702) 952-1660.
What is Dr. Gregory Martin Kwok's medical license number?
Dr. Kwok holds Nevada license 7407.
What medical group is Dr. Gregory Martin Kwok part of?
Dr. Kwok is linked to Gastroenterology Associates.
Does Dr. Gregory Martin Kwok accept Medicare?
Yes. CMS data shows Dr. Kwok billed Medicare for 1,694 services in 2024, and Dr. Kwok accepts Medicare assignment.
What is Dr. Gregory Martin Kwok's MIPS score?
Dr. Kwok's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Gregory Martin Kwok see?
CMS counts 736 Medicare patients who saw Dr. Kwok in 2024, with an average age of 75.
What services does Dr. Gregory Martin Kwok bill to Medicare?
In 2024, Dr. Kwok's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and surgery: digestive system (43239).
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Where did Dr. Gregory Martin Kwok go to medical school?
Dr. Kwok graduated from University of Texas Southwestern Medical School at Dallas in 1990.
What drugs does Dr. Gregory Martin Kwok prescribe most?
In 2024 Medicare Part D data, Dr. Kwok's most prescribed drugs by claims were Pantoprazole Sodium, Famotidine and Ursodiol.
Has Dr. Gregory Martin Kwok received payments from drug or device companies?
CMS Open Payments shows $9,423 in general payments to Dr. Kwok from 36 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Gregory Martin Kwok been practicing?
Dr. Kwok graduated from medical school in 1990, 36 years ago.
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