Donald Mehlhorn, DO
NPI 1912584947 · Internal Medicine Physician · Naples, FL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Mehlhorn, DO is a Internal Medicine Physician provider in Naples, FL (NPI 1912584947).
Provider details
- NPI number
- 1912584947
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- OS20951 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 32 | 13 |
| Omeprazole | 17 | — |
| Lisinopril | 16 | — |
| Rosuvastatin Calcium | 16 | — |
| Ezetimibe | 14 | — |
| Amlodipine Besylate | 13 | — |
| Empagliflozinbrand: Jardiance |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$514 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 525 Technology Park Ste 109Lake Mary, FL 32746-7107Phone: (407) 647-2346
Registry dates
- Enumerated
- 2021-03-25
- Last updated
- 2025-05-22
- Certified
- 2025-05-22
Frequently asked questions
- What is Donald Mehlhorn's NPI number?
- Donald Mehlhorn's National Provider Identifier (NPI) is 1912584947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Mehlhorn's specialty?
- Donald Mehlhorn is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Mehlhorn located?
- Donald Mehlhorn's practice location on file with NPPES is 350 7th St N, Naples, FL 34102-5754.
- What is Donald Mehlhorn's phone number?
- The practice phone number listed in the NPPES registry for Donald Mehlhorn is (239) 624-5000.
- Does Donald Mehlhorn accept Medicare?
- Donald Mehlhorn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Mehlhorn's NPI active?
- Yes — Donald Mehlhorn's NPI (1912584947) is active in the NPPES registry as of the last update on 2025-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.