Nathaniel Rial, MD/PHD/MPH
NPI 1750510327 · Internal Medicine Physician · Apo
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Rial, MD/PHD/MPH is a Internal Medicine Physician provider in Apo (NPI 1750510327).
Provider details
- NPI number
- 1750510327
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD/PHD/MPH
- Sex
- Male
- Sole proprietor
- Yes
- License
- R71672 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,010 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 | 408 | $114 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 281 | $76 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 181 | $110 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 92 | $167 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 35 | $126 |
| Advance Care Planning, First 30 Minutes99497 | 13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 34 | 27 |
| Pantoprazole Sodium | 31 | 25 |
| Ciprofloxacin Hcl | 27 | 26 |
| Metoprolol Tartrate | 24 | 14 |
| Apixabanbrand: Eliquis | 21 | 19 |
| Levofloxacin | 21 | 21 |
| Amiodarone Hcl | 18 | 12 |
Practice location
Mailing address
Additional practice locations (1)
- 350 N Wilmot RdTucson, AZ 85711-2602Phone: (520) 296-3211
Registry dates
- Enumerated
- 2009-07-04
- Last updated
- 2025-02-04
- Certified
- 2025-02-04
Frequently asked questions
- What is Nathaniel Rial's NPI number?
- Nathaniel Rial's National Provider Identifier (NPI) is 1750510327, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Rial's specialty?
- Nathaniel Rial is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathaniel Rial located?
- Nathaniel Rial's practice location on file with NPPES is Naval Hospital, Apo, 28547-2538.
- What is Nathaniel Rial's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Rial is (910) 450-4159.
- Does Nathaniel Rial accept Medicare?
- Nathaniel Rial is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Rial's NPI active?
- Yes — Nathaniel Rial's NPI (1750510327) is active in the NPPES registry as of the last update on 2025-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.