Dr. Nicholas Markham Leonard, MD
- Medicare services, 2024
- 938
- Medicare patients, 2024
- 415
- Part D claims, 2024
- 1,045
- MIPS score, 2024
- 88
- Hospital affiliations
- 1
- Practice address
- 1946 Young St, Honolulu, HI 96826
- Practice phone
- Call (808) 335-0499
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kauaʻi Medical Clinic - ʻEleʻele
Urgent Care Center · Honolulu, Hawaii
Find Dr. Leonard'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. Nicholas Markham Leonard is an emergency medicine physician in Honolulu, Hawaii
Dr. Leonard practices at Kauaʻi Medical Clinic - ʻEleʻele in Honolulu, Hawaii.
Dr. Leonard's NPI, 1003929787, was assigned on August 16, 2006. Dr. Leonard graduated from University of Alabama School of Medicine in 1994. Dr. Leonard holds Oregon license MD20539.
- NPI
- 1003929787NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921195587
- NPI enumeration date
- August 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (808) 335-0499
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nicholas Markham Leonard practices at Kauaʻi Medical Clinic - ʻEleʻele in Honolulu, Hawaii
Dr. Leonard's primary practice is Kauaʻi Medical Clinic - ʻEleʻele, at 1946 Young St, Honolulu, HI 96826. The practice phone is (808) 335-0499.
- Kauaʻi Medical Clinic - ʻEleʻele1946 Young St, Honolulu, HI 96826Phone(808) 335-0499
Source: Dmand AI Affiliation Data
Dr. Nicholas Markham Leonard is affiliated with 2 sites of care and 1 medical group
Dr. Leonard's primary practice is Kauaʻi Medical Clinic - ʻEleʻele in Honolulu, Hawaii. Dr. Leonard is also affiliated with Wilcox Medical Center. The medical group on file is Kauaʻi Medical Clinic. Dr. Leonard's employer is on file too: an urgent care center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nicholas Markham Leonard's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leonard practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kauaʻi Medical Clinic - ʻEleʻele | 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. Nicholas Markham Leonard is one of 393 emergency medicine physicians in Hawaii
Emergency medicine is Dr. Leonard's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Leonard is licensed in Oregon.
Specialties and state licenses
- Emergency medicine, OregonPrimary
Emergency medicine physicians near Dr. Leonard
Counts of emergency 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. Nicholas Markham Leonard billed Medicare for 938 services in 2024
CMS data shows 938 Medicare services from Dr. Leonard across 12 procedure codes in 2024, for 415 Medicare patients. Medicare paid $41,450 for them. Every service was in an office.
Dr. Leonard's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4532024: 452No change
- Drugs given in the office
- 2023: 2672024: 19029%
- Lab and pathology
- 2023: 1632024: 1757%
- Other services
- 2023: 982024: 7919%
- Tests and treatments
- 2023: 452024: 2936%
- Surgery
- 2023: 122024: 138%
Dr. Leonard compared with the Hawaii median for emergency medicine physicians, 2024
- Dr. Leonard
- Hawaii median
- Medicare services
- 938vs 2294.1 times
- Medicare patients
- 415vs 2042.0 times
- Part D claims
- 817vs 7211.3 times
Medians across 378 emergency medicine physicians in Hawaii with Dmand AI profiles that report each measure.
Dr. Leonard'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. Leonard?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leonard and other emergency medicine physicians in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nicholas Markham Leonard treated 415 Medicare patients in 2024, average age 74
CMS counts 415 Medicare patients who saw Dr. Leonard in 2024. The largest group is 65 to 74, with 203 patients. 75% of them have high cholesterol, and 70% have high blood pressure. 6% are also on Medicaid. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Leonard's median patient age at 52, with 55% women.
Dr. Leonard's Medicare patients by age, 2024
Dr. Leonard's Medicare patients by sex, 2024
- Women23156%
- Men18444%
Chronic conditions among Dr. Leonard's Medicare patients, 2024
- High cholesterol75%
- High blood pressure70%
- Arthritis38%
- Diabetes28%
- Chronic kidney disease22%
- Atrial fibrillation16%
- Osteoporosis15%
- Asthma14%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leonard's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
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. Nicholas Markham Leonard wrote 1,045 Medicare Part D claims in 2024
In 2024, Dr. Leonard wrote 1,045 Medicare Part D claims for 597 patients. 92% of them were for generic drugs. CMS names the drug for 817 of them, across 25 drugs with 11 or more claims each, at $6,870 in total drug cost. In 2023, CMS named 783 claims across 23 drugs.
Dr. Leonard's Part D claims by kind of drug, 2024
- Generic961 claims92%
- Brand-name and other84 claims8%
Dr. Leonard'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. Leonard's Part D claims, 2024
- Opioids3%30 of 1,045 claims
- Antibiotics36%377 of 1,045 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: 7832024: 8174%
Drugs named by CMS: 25 in 2024, 23 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. Nicholas Markham Leonard scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Leonard for performance year 2024, reported as part of a group. Dr. Leonard accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Leonard's MIPS scores, performance year 2024
- 88of 100Final score
- 79.9of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 82of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 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. Nicholas Markham Leonard received $144 in industry payments from 2018 to 2019
CMS Open Payments shows 2 general payments to Dr. Leonard from 2 drug and device companies from 2018 to 2019. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $94.
General payments to Dr. Leonard by program year, 2018 to 2019
Companies that paid Dr. Leonard the most, 2018 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nicholas Markham Leonard graduated from University of Alabama School of Medicine
Dr. Leonard graduated from University of Alabama School of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nicholas Markham Leonard'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. Nicholas Markham Leonard
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. Nicholas Markham Leonard's NPI number?
Dr. Nicholas Markham Leonard's NPI number is 1003929787. It was assigned on August 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicholas Markham Leonard?
Dr. Nicholas Markham Leonard is an emergency medicine physician in Honolulu, Hawaii. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Nicholas Markham Leonard practice?
Dr. Leonard practices at 1946 Young St, Honolulu, HI 96826. Dr. Leonard's primary practice is Kauaʻi Medical Clinic - ʻEleʻele in Honolulu, Hawaii.
What is Dr. Nicholas Markham Leonard's office phone number?
The practice phone on file for Dr. Leonard is (808) 335-0499.
What is Dr. Nicholas Markham Leonard's medical license number?
Dr. Leonard holds Oregon license MD20539.
Which hospitals is Dr. Nicholas Markham Leonard affiliated with?
Dr. Leonard is affiliated with Wilcox Medical Center.
What medical group is Dr. Nicholas Markham Leonard part of?
Dr. Leonard is linked to Kauaʻi Medical Clinic.
Does Dr. Nicholas Markham Leonard accept Medicare?
Yes. CMS data shows Dr. Leonard billed Medicare for 938 services in 2024, and Dr. Leonard accepts Medicare assignment.
What is Dr. Nicholas Markham Leonard's MIPS score?
Dr. Leonard's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
How many Medicare patients does Dr. Nicholas Markham Leonard see?
CMS counts 415 Medicare patients who saw Dr. Leonard in 2024, with an average age of 74.
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What services does Dr. Nicholas Markham Leonard bill to Medicare?
In 2024, Dr. Leonard's most billed Medicare services were office visit, established patient (99214), injected or infused drug (J1100) and office visit, established patient (99213).
Where did Dr. Nicholas Markham Leonard go to medical school?
Dr. Leonard graduated from University of Alabama School of Medicine in 1994.
What drugs does Dr. Nicholas Markham Leonard prescribe most?
In 2024 Medicare Part D data, Dr. Leonard's most prescribed drugs by claims were Prednisone, Azithromycin and Mupirocin.
Has Dr. Nicholas Markham Leonard received payments from drug or device companies?
CMS Open Payments shows $144 in general payments to Dr. Leonard from 2 companies from 2018 to 2019. The largest total came from Pfizer Inc.
How long has Dr. Nicholas Markham Leonard been practicing?
Dr. Leonard graduated from medical school in 1994, 32 years ago.
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