Nathan Walton, MD
NPI 1992498588 · Internal Medicine Physician · Tucson, AZ
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Walton, MD is a Internal Medicine Physician provider in Tucson, AZ (NPI 1992498588).
Provider details
- NPI number
- 1992498588
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R80259 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 42 | 19 |
| Metformin Hcl | 34 | — |
| Levothyroxine Sodium | 29 | 12 |
| Amlodipine Besylate | 27 | 13 |
| Losartan Potassium | 25 | 11 |
| Rosuvastatin Calcium | 25 | 13 |
| Furosemide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-05-30
- Last updated
- 2023-09-06
- Certified
- 2023-08-19
Frequently asked questions
- What is Nathan Walton's NPI number?
- Nathan Walton's National Provider Identifier (NPI) is 1992498588, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Walton's specialty?
- Nathan Walton is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Walton located?
- Nathan Walton's practice location on file with NPPES is 7901 E 22nd St, Tucson, AZ 85710-8509.
- What is Nathan Walton's phone number?
- The practice phone number listed in the NPPES registry for Nathan Walton is (520) 694-8888.
- Does Nathan Walton accept Medicare?
- Nathan Walton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Walton's NPI active?
- Yes — Nathan Walton's NPI (1992498588) is active in the NPPES registry as of the last update on 2023-09-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.