Dr. Mal S. Riddell III, DO
- Medicare services, 2024
- 140
- Medicare patients, 2024
- 41
- Part D claims, 2024
- 603
- MIPS score, 2024
- 84
- Hospital affiliations
- 1
- Practice address
- 960 Avent Drive, Grenada, MS 38901
- Practice phone
- Call (662) 227-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Riddell's professional email, personal email and mobile number
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Dr. Mal S. Riddell III is a family medicine physician in Grenada, Mississippi
Dr. Riddell practices at UMMC Grenada Hospital in Grenada, Mississippi, part of Mississippi Institutions of Higher Learning.
Dr. Riddell's NPI, 1083613210, was assigned on July 19, 2005. Dr. Riddell graduated from Kansas City College of Medicine and Surgery in 1977. Dr. Riddell holds Mississippi license 08590.
- NPI
- 1083613210NPI Registry (opens in a new tab)
- NPI enumeration date
- July 19, 2005
- NPI status
- Active
- Practice phone
- (662) 227-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mal S. Riddell III practices at UMMC Grenada Hospital in Grenada, Mississippi
Dr. Riddell's primary practice is UMMC Grenada Hospital, at 960 Avent Drive, Grenada, MS 38901 in Grenada County. The practice phone is (662) 227-7000.
- UMMC Grenada Hospital960 Avent Drive, Grenada, MS 38901 · Grenada CountyPhone(662) 227-7000
Source: Dmand AI Affiliation Data
Dr. Mal S. Riddell III is affiliated with 3 sites of care and 1 medical group
Dr. Riddell's primary practice is UMMC Grenada Hospital in Grenada, Mississippi, part of Mississippi Institutions of Higher Learning. The medical group on file is University of Mississippi Medical Center. Dmand AI also links Dr. Riddell to 1 more physician office and 1 group practice or clinic, 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. Mal S. Riddell III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Riddell practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UMMC Grenada Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mal S. Riddell III is one of 954 family medicine physicians in Mississippi
Family medicine is Dr. Riddell's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Riddell is licensed in Mississippi.
Specialties and state licenses
- Family medicine, MississippiPrimary
Family medicine physicians near Dr. Riddell
Counts of family medicine 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. Mal S. Riddell III billed Medicare for 140 services in 2024
CMS data shows 140 Medicare services from Dr. Riddell across 5 procedure codes in 2024, for 41 Medicare patients. Medicare paid $2,561 for them. Every service was in an office.
Dr. Riddell's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 2962024: 5681%
- Office and hospital visits
- 2023: 6592024: 4693%
- Surgery
- 2023: 3562024: 2493%
- Tests and treatments
- 2023: 1072024: 1487%
- Lab and pathology
- 2023: 892024: 0100%
- Other services
- 2023: 832024: 0100%
Dr. Riddell compared with the Mississippi median for family medicine physicians, 2024
- Dr. Riddell
- Mississippi median
- Medicare services
- 140vs 80083% below
- Medicare patients
- 41vs 25584% below
- Part D claims
- 261vs 1,79285% below
Medians across 967 family medicine physicians in Mississippi with Dmand AI profiles that report each measure.
Dr. Riddell'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. Riddell and other family medicine physicians in Mississippi.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mal S. Riddell III treated 41 Medicare patients in 2024, average age 74
CMS counts 41 Medicare patients who saw Dr. Riddell in 2024. The largest group is 65 to 74, with 21 patients. 75% of them have high blood pressure, and 54% have high cholesterol. Their average risk score is 0.71, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Riddell's median patient age at 71, with 55% women.
Dr. Riddell's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Riddell's Medicare patients by sex, 2024
- Women2151%
- Men2049%
Chronic conditions among Dr. Riddell's Medicare patients, 2024
- High blood pressure75%
- High cholesterol54%
- Arthritis34%
- Ischemic heart disease32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Riddell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mal S. Riddell III wrote 603 Medicare Part D claims in 2024
In 2024, Dr. Riddell wrote 603 Medicare Part D claims for 201 patients. 91% of them were for generic drugs. CMS names the drug for 261 of them, across 16 drugs with 11 or more claims each, at $2,267 in total drug cost. In 2023, CMS named 5,185 claims across 107 drugs.
Dr. Riddell's Part D claims by kind of drug, 2024
- Generic551 claims91%
- Brand-name52 claims9%
Dr. Riddell'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. Riddell's Part D claims, 2024
- Antibiotics2%12 of 603 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: 5,1852024: 26195%
Drugs named by CMS: 16 in 2024, 107 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. Mal S. Riddell III scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Riddell for performance year 2024, reported as part of a group.
Dr. Riddell's MIPS scores, performance year 2024
- 84of 100Final score
- 67.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mal S. Riddell III received $672 in industry payments from 2016 to 2023
CMS Open Payments shows 29 general payments to Dr. Riddell from 13 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $271.
General payments to Dr. Riddell by program year, 2016 to 2023
Companies that paid Dr. Riddell the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mal S. Riddell III graduated from Kansas City College of Medicine and Surgery
Dr. Riddell graduated from Kansas City College of Medicine and Surgery in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mal S. Riddell III'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 | Clinician Public Reporting: Overall MIPS Performance (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. Mal S. Riddell III
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. Mal S. Riddell III's NPI number?
Dr. Mal S. Riddell III's NPI number is 1083613210. It was assigned on July 19, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mal S. Riddell III?
Dr. Mal S. Riddell III is a family medicine physician in Grenada, Mississippi. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Mal S. Riddell III practice?
Dr. Riddell practices at 960 Avent Drive, Grenada, MS 38901. Dr. Riddell's primary practice is UMMC Grenada Hospital in Grenada, Mississippi, part of Mississippi Institutions of Higher Learning. Dmand AI also links Dr. Riddell to 1 physician office and 1 group practice or clinic.
What is Dr. Mal S. Riddell III's office phone number?
The practice phone on file for Dr. Riddell is (662) 227-7000.
What is Dr. Mal S. Riddell III's medical license number?
Dr. Riddell holds Mississippi license 08590.
Which hospitals is Dr. Mal S. Riddell III affiliated with?
Dr. Riddell practices at UMMC Grenada Hospital in Grenada, Mississippi.
What medical group is Dr. Mal S. Riddell III part of?
Dr. Riddell is linked to University of Mississippi Medical Center.
Does Dr. Mal S. Riddell III accept Medicare?
Yes. CMS data shows Dr. Riddell billed Medicare for 140 services in 2024.
What is Dr. Mal S. Riddell III's MIPS score?
Dr. Riddell's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mal S. Riddell III see?
CMS counts 41 Medicare patients who saw Dr. Riddell in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Mal S. Riddell III bill to Medicare?
In 2024, Dr. Riddell's most billed Medicare services were injected or infused drug (J1100), office visit, established patient (99214) and surgery: heart and blood vessels (36415).
Where did Dr. Mal S. Riddell III go to medical school?
Dr. Riddell graduated from Kansas City College of Medicine and Surgery in 1977.
What drugs does Dr. Mal S. Riddell III prescribe most?
In 2024 Medicare Part D data, Dr. Riddell's most prescribed drugs by claims were Atorvastatin Calcium, Omeprazole and Amlodipine Besylate.
Has Dr. Mal S. Riddell III received payments from drug or device companies?
CMS Open Payments shows $672 in general payments to Dr. Riddell from 13 companies from 2016 to 2023. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Mal S. Riddell III been practicing?
Dr. Riddell graduated from medical school in 1977, 49 years ago.
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