Nathan Kellis, M.D.
Hospitalist Physician · Boise, ID
Nathan Kellis, M.D. is a hospitalist physician with a practice address in Boise, Idaho, and NPI 1942688627, issued on May 13, 2015. Check the license (Idaho M-13948, as entered in NPPES) on the Idaho Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Nathan Kellis
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- M-13948 ID
R74964 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1055 N Curtis RD, Boise, ID 83706
- Phone
- (208) 367-6279
- Enumerated
- May 13, 2015
- Record last updated
- Aug 1, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (208) 367-3951
- Medicare enrollment
- Enrolled (PECOS I20180817003205); accepts Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 2015
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 105 in Idaho → Look up another NPI →
Also registered at 1055 N Curtis RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Micheal Adondakis, MDDiagnostic Radiology Physician1003306754
- Luis Alcaraz, PA-CPhysician Assistant1508593765
- Faith AlexanderRegistered Nurse1528937430
- Brian Allen, CRNACertified Registered Nurse Anesthetist1982855482
- Philip Anderson, DOInternal Medicine Physician1154997104
- Clara Riji Anil, MDInternal Medicine Physician1043578818
Verify Nathan Kellis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIdaho Board of Medicine
Search for license M-13948Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average hospitalist physician in 2024
194 Medicare Part D claims for 85 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 13 claims were for opioids.
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.
Bills Medicare through one group practice
- Saint Alphonsus Regional Medical Center IncBoise, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Kellis among 105 hospitalist physician records in Idaho
Nathan Kellis, M.D. is one of 105 hospitalist physician records with a practice address in Idaho. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 67% of them.
- NPI issued2015 · 67% of these records are older, 25% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2015 · median 2010 among the 88 with a school on file
- Record last updated2018 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Idaho practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Idaho
There are 105 hospitalist physician records in Idaho.
All 105 in Idaho → Every provider in Boise → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Lauren Bales, M.D.Boise, ID 837061366435687
- Paula Durst, DOBoise, ID 837061932547338
- Lisa Hunt, MDBoise, ID 837061225066103
- Tanya Krafft, MDBoise, ID 837061356370563
- Carol Le, M.D.Boise, ID 837061518011287
- Kae Leinberger, NP-CBoise, ID 837061811197874
- Katherine Mathews, M.D.Boise, ID 837061841296902
- Lisa Nelson, M.D.Boise, ID 837061194840397
Common questions
What is Nathan Kellis, M.D.'s NPI number?
Nathan Kellis, M.D.'s National Provider Identifier (NPI) is 1942688627, issued on May 13, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Kellis, M.D. located?
The NPPES record lists a practice address at 1055 N Curtis RD, Boise, ID, 83706. Phone: (208) 367-6279. Providers update this record themselves, so call before visiting.
How can I verify Nathan Kellis, M.D.'s license?
NPPES lists Idaho license number M-13948, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathan Kellis, M.D. prescribe under Medicare Part D?
In 2024, Nathan Kellis, M.D. had 194 Medicare Part D claims for 85 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
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.