Nial K. Castle, D.O.
Internal Medicine Physician · Kansas City, KS
Nial K. Castle, D.O. is an internal medicine physician with a practice address in Kansas City, Kansas, and NPI 1780677831, issued on Aug 24, 2005. Check the license (Kansas 05-27603, as entered in NPPES) on the Kansas State Board of Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Nial K. Castle
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 05-27603 KS
110747 MO
Self-reported in NPPES; status is on the state search - Practice location
- 8929 Parallel Pkwy, Kansas City, KS 66112
- Phone
- (913) 596-4000
- Enumerated
- Aug 24, 2005
- Record last updated
- Mar 22, 2024
- Medicare enrollment
- Enrolled (PECOS I20100204000179); accepts Medicare assignment
- Medical or professional school
- R Franklin University Of Med & Sci/Chicago Medical School, 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,010 in Kansas → Look up another NPI →
Also registered at 8929 Parallel Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Emily AdelmanCertified Registered Nurse Anesthetist1962146837
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- Allison Barfuss-Walter, D.O.Emergency Medicine Physician1265773766
- Melanie Beal, FNPFamily Nurse Practitioner1134451453
- Connie Bilyeu, MACCCSLPSpeech-Language Pathologist1033266812
Verify Nial K. Castle in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKansas State Board of Healing Arts
Search for license 05-27603Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,097 Medicare Part D claims for 364 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 81 claims were for opioids.
Most prescribed
- Ondansetron Odt131 claims
- Pantoprazole Sodium59 claims
- Amoxicillin-Clavulanate Potass55 claims
- Hydrocodone-Acetaminophen39 claims
- Amlodipine Besylate34 claims
- Cefuroxime32 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 91.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Hospitalist Medicine Physicians OF Texas PLLCWichita, KS
- Kansas Hospitalist Services PAShawnee Mission, KS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nial K. Castle among 1,010 internal medicine physician records in Kansas
Nial K. Castle, D.O. is one of 1,010 internal medicine physician records with a practice address in Kansas. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1996 · median 2008 among the 568 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Kansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
278 internal medicine physician records list a practice address in Kansas City
They are 278 of the 4,522 NPPES records with a practice address in Kansas City, and 1,010 internal medicine physician records in Kansas.
All 1,010 in Kansas → Every provider in Kansas City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Aunya Cameron, M.D.Kansas City, KS 661121346660248
- Nelopher Hathiary, M.D.Kansas City, KS 661121023159522
- Ira Marsh, MDKansas City, KS 661121013137587
- Halla Moussa, MDKansas City, KS 661121063488526
- Ursula Reusch, MDKansas City, KS 661121477633063
- Sukhindervir Sandhu, MDKansas City, KS 661121447710546
- Barry Solomon, MDKansas City, KS 661121669790176
- Dennis Termulo, MDKansas City, KS 661121336321488
Common questions
What is Nial K. Castle, D.O.'s NPI number?
Nial K. Castle, D.O.'s National Provider Identifier (NPI) is 1780677831, issued on Aug 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Nial K. Castle, D.O. located?
The NPPES record lists a practice address at 8929 Parallel Pkwy, Kansas City, KS, 66112. Phone: (913) 596-4000. Providers update this record themselves, so call before visiting.
How can I verify Nial K. Castle, D.O.'s license?
NPPES lists Kansas license number 05-27603, as entered by the provider. Search the Kansas State Board of Healing Arts at https://www.ksbha.ks.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nial K. Castle, D.O. prescribe under Medicare Part D?
In 2024, Nial K. Castle, D.O. had 1,097 Medicare Part D claims for 364 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Nial K. Castle, D.O.'s MIPS final score?
The 2023 MIPS final score is 91.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.