Nathan Kellis, M.D.
NPI 1942688627 · Hospitalist Physician · Boise, ID
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Kellis, M.D. is a Hospitalist Physician provider in Boise, ID (NPI 1942688627).
Provider details
- NPI number
- 1942688627
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- M-13948 (ID)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
660 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 314 | $109 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 180 | $72 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 96 | $105 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 70 | $159 |
Typical Medicare-allowed amounts for these services range $72–$159 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 1501 N Campbell AveTucson, AZ 85724-5040Phone: (801) 669-2548
Registry dates
- Enumerated
- 2015-05-13
- Last updated
- 2018-08-01
Frequently asked questions
- What is Nathan Kellis's NPI number?
- Nathan Kellis's National Provider Identifier (NPI) is 1942688627, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Kellis's specialty?
- Nathan Kellis is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Kellis located?
- Nathan Kellis's practice location on file with NPPES is 1055 N Curtis Rd, Boise, ID 83706-1309.
- What is Nathan Kellis's phone number?
- The practice phone number listed in the NPPES registry for Nathan Kellis is (208) 367-6279.
- Does Nathan Kellis accept Medicare?
- Nathan Kellis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Kellis's NPI active?
- Yes — Nathan Kellis's NPI (1942688627) is active in the NPPES registry as of the last update on 2018-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.