Dr. Clark Harrison, MD
- Medicare services, 2024
- 194
- Medicare patients, 2024
- 179
- Part D claims, 2024
- 107
- Industry payments
- $2,178
- Affiliated sites
- 2
- Practice address
- 10619 Professional Circle, Reno, NV 89521
- Practice phone
- Call (775) 852-4848
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
South Meadows Endoscopy Center
Surgery Center - Medicare-Certified · Reno, Nevada
Find Dr. Harrison'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. Clark Harrison is a gastroenterologist in Reno, Nevada
Dr. Harrison practices at South Meadows Endoscopy Center in Reno, Nevada.
Dr. Harrison's NPI, 1679559496, was assigned on December 22, 2005. Dr. Harrison graduated from UVA School of Medicine in 1987. Dr. Harrison holds Nevada license 6505.
- NPI
- 1679559496NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486551926
- NPI enumeration date
- December 22, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (775) 852-4848
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Clark Harrison practices at South Meadows Endoscopy Center in Reno, Nevada
Dr. Harrison's primary practice is South Meadows Endoscopy Center, at 10619 Professional Circle, Reno, NV 89521. The practice phone is (775) 852-4848.
- South Meadows Endoscopy Center10619 Professional Circle, Reno, NV 89521Phone(775) 852-4848
Source: Dmand AI Affiliation Data
Dr. Clark Harrison is affiliated with 2 sites of care and 1 medical group
Dr. Harrison's primary practice is South Meadows Endoscopy Center in Reno, Nevada. The medical group on file is GI Consultants. Dmand AI also links Dr. Harrison to 1 more ambulatory surgery center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Clark Harrison's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Harrison practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| South Meadows Endoscopy Center | 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. Clark Harrison is one of 107 gastroenterologists in Nevada
Gastroenterology is Dr. Harrison's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Harrison is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Harrison's licenses on file in 3 states: Nevada, California and Oregon.
Specialties and state licenses
- Gastroenterology, NevadaPrimary
- California license
- Oregon license
Clinical focus
Dmand AI lists colonoscopy and upper GI endoscopy among the conditions Dr. Harrison treats.
Gastroenterologists near Dr. Harrison
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. Clark Harrison billed Medicare for 194 services in 2024
CMS data shows 194 Medicare services from Dr. Harrison across 6 procedure codes in 2024, for 179 Medicare patients. Medicare paid $31,925 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Harrison's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1102024: 16550%
- Other services
- 2023: 112024: 29164%
Dr. Harrison compared with the Nevada median for gastroenterologists, 2024
- Dr. Harrison
- Nevada median
- Medicare services
- 194vs 75874% below
- Medicare patients
- 179vs 40055% below
- Part D claims
- 83vs 59486% below
Medians across 106 gastroenterologists in Nevada with Dmand AI profiles that report each measure.
Dr. Harrison'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. Harrison and other gastroenterologists in Nevada.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Clark Harrison treated 179 Medicare patients in 2024, average age 71
CMS counts 179 Medicare patients who saw Dr. Harrison in 2024. The largest group is 65 to 74, with 135 patients. 75% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 0.72, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Harrison's median patient age at 62, with 50% women.
Dr. Harrison's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Harrison's Medicare patients by sex, 2024
- Women9050%
- Men8950%
Chronic conditions among Dr. Harrison's Medicare patients, 2024
- High cholesterol75%
- High blood pressure60%
- Arthritis38%
- Anxiety21%
- Mood disorders19%
- Diabetes18%
- Depression17%
- Cancer14%
Share of Medicare patients with each condition. A patient can have several.
Dr. Harrison's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Clark Harrison wrote 107 Medicare Part D claims in 2024
In 2024, Dr. Harrison wrote 107 Medicare Part D claims for 99 patients. 75% of them were for generic drugs. CMS names the drug for 83 of them, across 2 drugs with 11 or more claims each, at $1,382 in total drug cost. In 2023, CMS named 11 claims across 1 drug.
Dr. Harrison's Part D claims by kind of drug, 2024
- Generic80 claims75%
- Brand-name27 claims25%
Dr. Harrison'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 112024: 83655%
Drugs named by CMS: 2 in 2024, 1 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. Clark Harrison ranks in the 81st percentile for colonoscopy in Medicare
Dr. Harrison accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 104 procedures of colonoscopy by Dr. Harrison, more than 81% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Harrison ranks in Medicare procedure volume
- Colonoscopy
- 81st percentile104 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 64th percentile53 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Clark Harrison received $2,178 in industry payments from 2016 to 2025
CMS Open Payments shows 34 general payments to Dr. Harrison from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $639.
General payments to Dr. Harrison by program year, 2016 to 2025
General payments to Dr. Harrison by kind, 2016 to 2025
- Food and beverage$2,174100%
- Education$40%
Companies that paid Dr. Harrison 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. Clark Harrison has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Harrison, most recently Regional Top Doctor in 2014.
Awards and honors for Dr. Harrison
- 2014
- Regional Top Doctor
- 2011
- CMS Stage 1 2012
Dr. Harrison's committees and leadership roles
- Nevada Colon Cancer PartnershipChair
- 2013 to 2015
Source: Dmand AI Professional Profile Data
Dr. Clark Harrison graduated from UVA School of Medicine
Dr. Harrison graduated from UVA School of Medicine in 1987. Dr. Harrison is a member of ACG.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Clark Harrison accepts plans from 9 insurance carriers
Dr. Harrison is in network with 9 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Humana
- Regence Health Plans
- CMS Medicare
- Molina
- +1 more carriersWith a free account
Plan types Dr. Harrison accepts, by number of carriers
- Medicare8
- PPO6
- HMO2
- POS2
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Clark Harrison'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Clark Harrison
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. Clark Harrison's NPI number?
Dr. Clark Harrison's NPI number is 1679559496. It was assigned on December 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Clark Harrison?
Dr. Clark Harrison is a gastroenterologist in Reno, Nevada. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Clark Harrison practice?
Dr. Harrison practices at 10619 Professional Circle, Reno, NV 89521. Dr. Harrison's primary practice is South Meadows Endoscopy Center in Reno, Nevada. Dmand AI also links Dr. Harrison to 1 ambulatory surgery center.
What is Dr. Clark Harrison's office phone number?
The practice phone on file for Dr. Harrison is (775) 852-4848.
What is Dr. Clark Harrison's medical license number?
Dr. Harrison holds Nevada license 6505, one of the licenses on file in 3 states.
Which states has Dr. Clark Harrison been licensed in?
Dmand AI has state licenses on file for Dr. Harrison in Nevada (1992 to 2027), California (2022 to 2026) and Oregon (1990 to 1993).
What medical group is Dr. Clark Harrison part of?
Dr. Harrison is linked to GI Consultants.
Does Dr. Clark Harrison accept Medicare?
Yes. CMS data shows Dr. Harrison billed Medicare for 194 services in 2024, and Dr. Harrison accepts Medicare assignment.
How many Medicare patients does Dr. Clark Harrison see?
CMS counts 179 Medicare patients who saw Dr. Harrison in 2024, with an average age of 71.
Is Dr. Clark Harrison board certified?
Yes. Dr. Harrison is board certified in gastroenterology by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Clark Harrison bill to Medicare?
In 2024, Dr. Harrison's most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43248) and surgery: digestive system (43239).
Where did Dr. Clark Harrison go to medical school?
Dr. Harrison graduated from UVA School of Medicine in 1987.
What drugs does Dr. Clark Harrison prescribe most?
In 2024 Medicare Part D data, Dr. Harrison's most prescribed drugs by claims were Gavilyte-G and Peg-3350 And Electrolytes.
Has Dr. Clark Harrison received payments from drug or device companies?
CMS Open Payments shows $2,178 in general payments to Dr. Harrison from 14 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Clark Harrison been practicing?
Dr. Harrison graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Clark Harrison accept?
Dr. Harrison is in network with 9 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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