John Malleis, MD
NPI 1144511643 · Internal Medicine Physician · Medford, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Malleis, MD is a Internal Medicine Physician provider in Medford, OR (NPI 1144511643).
Provider details
- NPI number
- 1144511643
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD174285 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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 · 162 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 391 | 113 |
| Lisinopril | 306 | 92 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 287 | 51 |
| Levothyroxine Sodium | 275 | 64 |
| Apixabanbrand: Eliquis | 244 | 42 |
| Amlodipine Besylate | 226 | 64 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-02
- Last updated
- 2015-12-03
Frequently asked questions
- What is John Malleis's NPI number?
- John Malleis's National Provider Identifier (NPI) is 1144511643, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Malleis's specialty?
- John Malleis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Malleis located?
- John Malleis's practice location on file with NPPES is 2859 State St Ste 102, Medford, OR 97504-8495.
- What is John Malleis's phone number?
- The practice phone number listed in the NPPES registry for John Malleis is (248) 459-5290.
- Does John Malleis accept Medicare?
- John Malleis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Malleis's NPI active?
- Yes — John Malleis's NPI (1144511643) is active in the NPPES registry as of the last update on 2015-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.