J Shoulder Elbow Surg
ArthritisArthroplasty, ReplacementJoint Prosthesis
Dr. Clayton Hartwick Riley, MD
NPI1700080389PAC ID2567628365
- Medicare services, 2024
- 4,347
- Medicare patients, 2024
- 517
- Part D claims, 2024
- 425
- Publications
- 1
- MIPS score, 2024
- 75
- Practice address
- 5320 W. Markham, Little Rock, AR 72205
- Practice phone
- Call (501) 975-5633
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Martin Orthopedics
Surgical practice · Little Rock, Arkansas
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Dr. Clayton Hartwick Riley is an orthopedic surgeon in Little Rock, Arkansas
Dr. Riley practices at Martin Orthopedics in Little Rock, Arkansas.
Dr. Riley's NPI, 1700080389, was assigned on June 14, 2007. Dr. Riley graduated from University of Arkansas College of Medicine in 2006. Dr. Riley holds Arkansas license E6967.
NPI and contact details
- NPI
- 1700080389NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567628365
- NPI enumeration date
- June 14, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (501) 975-5633
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Clayton Hartwick Riley practices at Martin Orthopedics in Little Rock, Arkansas
Dr. Riley's primary practice is Martin Orthopedics, at 5320 W. Markham, Little Rock, AR 72205. The practice phone is (501) 975-5633.
- Martin Orthopedics5320 W. Markham, Little Rock, AR 72205Phone(501) 975-5633
Source: Dmand AI Affiliation Data
Dr. Clayton Hartwick Riley is affiliated with 6 sites of care and 1 medical group
Dr. Riley's primary practice is Martin Orthopedics in Little Rock, Arkansas. Dr. Riley is also affiliated with Baptist Health Rehabilitation Institute-Little Rock. The medical group on file is Martin Orthopedics. Dmand AI also links Dr. Riley to 4 more hospitals, each named with a free account.
Martin OrthopedicsPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Clayton Hartwick Riley's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Riley practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Martin Orthopedics | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Clayton Hartwick Riley is one of 186 orthopedic surgeons in Arkansas
Orthopaedic surgery is Dr. Riley's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dmand AI has Dr. Riley's licenses on file in 2 states: Arkansas and Texas.
Specialties and state licenses
- Orthopaedic surgery, ArkansasPrimary
- Texas license
Orthopedic surgeons near Dr. Riley
Counts of orthopedic 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. Clayton Hartwick Riley billed Medicare for 4,347 services in 2024
CMS data shows 4,347 Medicare services from Dr. Riley across 22 procedure codes in 2024, for 517 Medicare patients. Medicare paid $163,657 for them.
Medicare services, 20244,347
Medicare patients517
Paid by Medicare$163,657
Procedure codes22
Dr. Riley's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 1,7772024: 2,30930%
- Office and hospital visits
- 2023: 8112024: 7814%
- Imaging
- 2023: 6702024: 7004%
- Surgery
- 2023: 5252024: 5576%
Where Dr. Riley's Medicare services took place, 2024
- In an office4,25598%
- In a facility922%
Dr. Riley compared with the Arkansas median for orthopedic surgeons, 2024
- Dr. Riley
- Arkansas median
- Medicare services
- 4,347vs 1,5592.8 times
- Medicare patients
- 517vs 34450% above
- Part D claims
- 356vs 21963% above
Medians across 179 orthopedic surgeons in Arkansas with Dmand AI profiles that report each measure.
Dr. Riley'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Clayton Hartwick Riley treated 517 Medicare patients in 2024, average age 74
CMS counts 517 Medicare patients who saw Dr. Riley in 2024. The largest group is 65 to 74, with 264 patients. 75% of them have arthritis, and 75% have high blood pressure. 2% are also on Medicaid. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Riley's median patient age at 69, with 50% women.
Medicare patients, 2024517
Average age74
Average risk score0.96
Also on Medicaid2%
Dr. Riley's Medicare patients by age, 2024
Dr. Riley's Medicare patients by sex, 2024
- Women28756%
- Men23044%
Chronic conditions among Dr. Riley's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease34%
- Mood disorders25%
- Anxiety24%
- Depression24%
- Diabetes24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Riley's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Clayton Hartwick Riley wrote 425 Medicare Part D claims in 2024
In 2024, Dr. Riley wrote 425 Medicare Part D claims for 190 patients. 99% of them were for generic drugs. CMS names the drug for 356 of them, across 7 drugs with 11 or more claims each, at $2,922 in total drug cost. In 2023, CMS named 337 claims across 7 drugs.
Part D claims, 2024425
Drugs named by CMS7
Total drug cost$2,922
Part D patients190
Dr. Riley's Part D claims by kind of drug, 2024
- Generic422 claims99%
- Brand-name and other3 claims1%
Dr. Riley'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. Riley's Part D claims, 2024
- Opioids43%183 of 425 claims
- Antibiotics4%17 of 425 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: 3372024: 3566%
Drugs named by CMS: 7 in 2024, 7 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. Clayton Hartwick Riley scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Riley for performance year 2024, reported as part of a group. Dr. Riley accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 110 procedures of upper limb (arm) arthroscopy (minimally invasive joint repair) by Dr. Riley, more than 97% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Where Dr. Riley ranks in Medicare procedure volume
- Upper limb (arm) arthroscopy (minimally invasive joint repair)
- 97th percentile110 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
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. Clayton Hartwick Riley has 1 publication on record
Dmand AI links 1 paper to Dr. Riley in 2011. Dr. Riley's most frequent co-authors are Thomas Bradley Edwards, MD, Hussein A. Elkousy, MD and Gary M. Gartsman, MD.
Papers1
Dr. Riley's most frequent co-authors
- Thomas Bradley Edwards, MD1 shared paper
- Hussein A. Elkousy, MD1 shared paper
- Gary M. Gartsman, MD1 shared paper
Recent publications by Dr. Riley
See who Dr. Riley researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Riley works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Clayton Hartwick Riley received $2,265 in industry payments from 2016 to 2025
CMS Open Payments shows 34 general payments to Dr. Riley from 17 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 81% of the total. Smith & Nephew, Inc. paid the most, $892.
General payments to Dr. Riley by program year, 2016 to 2025
General payments to Dr. Riley by kind, 2016 to 2025
$2.3Kin total
- Food and beverage$1,83081%
- Education$43519%
Companies that paid Dr. Riley 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. Clayton Hartwick Riley graduated from University of Arkansas College of Medicine
Dr. Riley graduated from University of Arkansas College of Medicine in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Clayton Hartwick Riley'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Clayton Hartwick Riley
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. Clayton Hartwick Riley's NPI number?
Dr. Clayton Hartwick Riley's NPI number is 1700080389. It was assigned on June 14, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Clayton Hartwick Riley?
Dr. Clayton Hartwick Riley is an orthopedic surgeon in Little Rock, Arkansas. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Clayton Hartwick Riley practice?
Dr. Riley practices at 5320 W. Markham, Little Rock, AR 72205. Dr. Riley's primary practice is Martin Orthopedics in Little Rock, Arkansas. Dmand AI also links Dr. Riley to 4 hospitals.
What is Dr. Clayton Hartwick Riley's office phone number?
The practice phone on file for Dr. Riley is (501) 975-5633.
What is Dr. Clayton Hartwick Riley's medical license number?
Dr. Riley holds Arkansas license E6967, one of the licenses on file in 2 states.
Which states has Dr. Clayton Hartwick Riley been licensed in?
Dmand AI has state licenses on file for Dr. Riley in Arkansas and Texas.
Which hospitals is Dr. Clayton Hartwick Riley affiliated with?
Dr. Riley is affiliated with Baptist Health Rehabilitation Institute-Little Rock. Dmand AI links Dr. Riley to 4 more hospitals.
What medical group is Dr. Clayton Hartwick Riley part of?
Dr. Riley is linked to Martin Orthopedics.
Does Dr. Clayton Hartwick Riley accept Medicare?
Yes. CMS data shows Dr. Riley billed Medicare for 4,347 services in 2024, and Dr. Riley accepts Medicare assignment.
What is Dr. Clayton Hartwick Riley's MIPS score?
Dr. Riley's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Clayton Hartwick Riley see?
CMS counts 517 Medicare patients who saw Dr. Riley in 2024, with an average age of 74.
What services does Dr. Clayton Hartwick Riley bill to Medicare?
In 2024, Dr. Riley's most billed Medicare services were injected or infused drug (J3301), diagnostic imaging (73030) and surgery: bones and joints (20610).
Where did Dr. Clayton Hartwick Riley go to medical school?
Dr. Riley graduated from University of Arkansas College of Medicine in 2006.
What drugs does Dr. Clayton Hartwick Riley prescribe most?
In 2024 Medicare Part D data, Dr. Riley's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Diclofenac Sodium and Meloxicam.
Has Dr. Clayton Hartwick Riley received payments from drug or device companies?
CMS Open Payments shows $2,265 in general payments to Dr. Riley from 17 companies from 2016 to 2025. The largest total came from Smith & Nephew, Inc.
How long has Dr. Clayton Hartwick Riley been practicing?
Dr. Riley graduated from medical school in 2006, 20 years ago.
Does Dr. Clayton Hartwick Riley do research?
Dmand AI links 1 publication to Dr. Riley.
Who does Dr. Clayton Hartwick Riley publish with?
Dr. Riley's most frequent co-authors are Thomas Bradley Edwards, MD (1 shared paper), Hussein A. Elkousy, MD (1 shared paper) and Gary M. Gartsman, MD (1 shared paper).
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