Dr. Nial K. Castle III, DO
- Medicare services, 2024
- 1,572
- Medicare patients, 2024
- 555
- Part D claims, 2024
- 1,097
- MIPS score, 2024
- 93
- Hospital affiliations
- 3
- Practice address
- 9100 W 74th Street, Shawnee Mission, KS 66204
- Practice phone
- Call (913) 676-2152
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Castle'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. Nial K. Castle III is an internist in Overland Park, Kansas
Dr. Castle practices at AdventHealth Shawnee Mission in Shawnee Mission, Kansas, part of AdventHealth.
Dr. Castle's NPI, 1780677831, was assigned on August 24, 2005. Dr. Castle graduated from R Franklin University of Med & Sci/Chicago Medical School in 1996. Dr. Castle holds Kansas license 05-27603.
- NPI
- 1780677831NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355309303
- NPI enumeration date
- August 24, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (913) 676-2152
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nial K. Castle III practices at AdventHealth Shawnee Mission in Shawnee Mission, Kansas
Dr. Castle's primary practice is AdventHealth Shawnee Mission, at 9100 W 74th Street, Shawnee Mission, KS 66204 in Johnson County. The practice phone is (913) 676-2152.
- AdventHealth Shawnee Mission9100 W 74th Street, Shawnee Mission, KS 66204 · Johnson CountyPhone(913) 676-2152
Source: Dmand AI Affiliation Data
Dr. Nial K. Castle III is affiliated with 6 sites of care and 3 medical groups
Dr. Castle's primary practice is AdventHealth Shawnee Mission in Shawnee Mission, Kansas, part of AdventHealth. Dr. Castle is also affiliated with Providence Medical Center. The medical group on file is Sound Physicians. Dmand AI also links Dr. Castle to 1 more hospital, 3 hospices and 2 medical groups, 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. Nial K. Castle III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castle practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| AdventHealth Shawnee Mission | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across AdventHealth and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Nial K. Castle III is one of 866 internists in Kansas
Internal medicine is Dr. Castle's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Castle's licenses on file in 2 states: Kansas and Missouri.
Specialties and state licenses
- Internal medicine, KansasPrimary
- Missouri license
Internists near Dr. Castle
Counts of internists 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. Nial K. Castle III billed Medicare for 1,572 services in 2024
CMS data shows 1,572 Medicare services from Dr. Castle across 8 procedure codes in 2024, for 555 Medicare patients. Medicare paid $121,002 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Castle's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,4512024: 1,5728%
Dr. Castle compared with the Kansas median for internists, 2024
- Dr. Castle
- Kansas median
- Medicare services
- 1,572vs 6812.3 times
- Medicare patients
- 555vs 2532.2 times
- Part D claims
- 766vs 1794.3 times
Medians across 820 internists in Kansas with Dmand AI profiles that report each measure.
Dr. Castle'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. Castle?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Castle and other internists in Kansas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nial K. Castle III treated 555 Medicare patients in 2024, average age 78
CMS counts 555 Medicare patients who saw Dr. Castle in 2024. The largest group is 75 to 84, with 211 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 2.23, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Castle's median patient age at 76, with 55% women.
Dr. Castle's Medicare patients by age, 2024
Dr. Castle's Medicare patients by sex, 2024
- Women29453%
- Men26147%
Chronic conditions among Dr. Castle's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Ischemic heart disease50%
- Chronic kidney disease47%
- Mood disorders44%
- Diabetes43%
- Heart failure43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Castle's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nial K. Castle III wrote 1,097 Medicare Part D claims in 2024
In 2024, Dr. Castle wrote 1,097 Medicare Part D claims for 364 patients. 92% of them were for generic drugs. CMS names the drug for 766 of them, across 30 drugs with 11 or more claims each, at $20,032 in total drug cost. In 2023, CMS named 432 claims across 18 drugs.
Dr. Castle's Part D claims by kind of drug, 2024
- Generic1,007 claims92%
- Brand-name and other90 claims8%
Dr. Castle'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. Castle's Part D claims, 2024
- Opioids7%81 of 1,097 claims
- Antibiotics16%173 of 1,097 claims
- Antipsychotics, patients 65 and over2%17 of 1,097 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: 4322024: 76677%
Drugs named by CMS: 30 in 2024, 18 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. Nial K. Castle III scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Castle for performance year 2024, reported through an alternative payment model (APM). Dr. Castle accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Castle's MIPS scores, performance year 2024
- 93of 100Final score
- 77of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Nial K. Castle III received $17 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Castle from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $17.
Companies that paid Dr. Castle the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nial K. Castle III graduated from R Franklin University of Med & Sci/Chicago Medical School
Dr. Castle graduated from R Franklin University of Med & Sci/Chicago Medical School in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nial K. Castle 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 | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)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. Nial K. Castle 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. Nial K. Castle III's NPI number?
Dr. Nial K. Castle III's NPI number is 1780677831. It was assigned on August 24, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Nial K. Castle III?
Dr. Nial K. Castle III is an internist in Overland Park, Kansas. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Nial K. Castle III practice?
Dr. Castle practices at 9100 W 74th Street, Shawnee Mission, KS 66204. Dr. Castle's primary practice is AdventHealth Shawnee Mission in Shawnee Mission, Kansas, part of AdventHealth. Dmand AI also links Dr. Castle to 1 hospital, 3 hospices and 2 medical groups.
What is Dr. Nial K. Castle III's office phone number?
The practice phone on file for Dr. Castle is (913) 676-2152.
What is Dr. Nial K. Castle III's medical license number?
Dr. Castle holds Kansas license 05-27603, one of the licenses on file in 2 states.
Which states has Dr. Nial K. Castle III been licensed in?
Dmand AI has state licenses on file for Dr. Castle in Kansas and Missouri.
Which hospitals is Dr. Nial K. Castle III affiliated with?
Dr. Castle practices at AdventHealth Shawnee Mission in Shawnee Mission, Kansas. Dr. Castle is also affiliated with Providence Medical Center. Dmand AI links Dr. Castle to 1 more hospital.
What medical group is Dr. Nial K. Castle III part of?
Dr. Castle is linked to Sound Physicians. Dmand AI links Dr. Castle to 2 more medical groups.
Does Dr. Nial K. Castle III accept Medicare?
Yes. CMS data shows Dr. Castle billed Medicare for 1,572 services in 2024, and Dr. Castle accepts Medicare assignment.
What is Dr. Nial K. Castle III's MIPS score?
Dr. Castle's MIPS final score for performance year 2024 is 93 out of 100, reported through an alternative payment model (APM).
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Nial K. Castle III see?
CMS counts 555 Medicare patients who saw Dr. Castle in 2024, with an average age of 78.
What services does Dr. Nial K. Castle III bill to Medicare?
In 2024, Dr. Castle's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Where did Dr. Nial K. Castle III go to medical school?
Dr. Castle graduated from R Franklin University of Med & Sci/Chicago Medical School in 1996.
What drugs does Dr. Nial K. Castle III prescribe most?
In 2024 Medicare Part D data, Dr. Castle's most prescribed drugs by claims were Ondansetron ODT, Pantoprazole Sodium and Amoxicillin-Clavulanate Potass.
Has Dr. Nial K. Castle III received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Dr. Castle from 1 company from 2025 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Nial K. Castle III been practicing?
Dr. Castle graduated from medical school in 1996, 30 years ago.
Selling to internal medicine practices?
See internists in Kansas by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card