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DONALD THEODORE MEHLHORN DO
NPI 1912584947
Internal Medicine in Naples, FL

Active since March 25, 2021PECOS EnrolledAccepts Medicare Assignment
350 7TH ST N, NAPLES, FL 34102(239) 624-5000 Get Directions Write a Review

NPPES record last updated: May 22, 2025. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: May 22, 2025, Mar 25, 2021 (2 updates tracked since 2021).

About Donald Theodore Mehlhorn Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DONALD THEODORE MEHLHORN DO (NPI 1912584947) is an individual internal medicine provider in Naples, Florida, licensed in Florida (OS20951) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS, is affiliated with Adventhealth Orlando, and maintains a secondary practice location in Lake Mary.

NPPES Registry Identity

NPI1912584947
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDONALD THEODORE MEHLHORNCredential: DO
Location Address350 7TH ST NNaples, FL 34102-5754
Mailing Address429 Tierra Verde WayBradenton, FL 34212-2663 · (321) 662-2216
Phone(239) 624-5000
Sole ProprietorNo
Medical School CMSLake Erie College Of Osteopathic Medicine, ErieGraduated 2021
Enumeration DateMarch 25, 2021
Last NPPES UpdateMay 22, 20252 updates tracked since enumeration
NPPES CertifiedMay 22, 2025
✔ NPI 1912584947 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in FL · OS20951
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
350 7TH ST N, Naples, FL 34102
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Secondary Practice Location 1

Location 1525 Technology Park Ste 109Lake Mary, FL 32746-7107 · Phone (407) 647-2346 ext. 111

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Donald Theodore Mehlhorn Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1850793118
PECOS Enrollment IDI20250612002060
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Adventhealth Orlando

Acute Care Hospitals · Orlando, FL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100007
Location601 E Rollins StOrlando, FL 32803 · Orange County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 34102 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$135.56 typical visit price
range $58.56 – $179.05
Typical copayment $33.89 (range $14.64 – $44.76)
Most-billed visit code 99204
Established Patient
$103.21 typical visit price
range $18.44 – $144.68
Typical copayment $25.80 (range $4.61 – $36.17)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers11 claims11 services$17.61 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AIMEE BERMUDEZ
Nurse Practitioner
350 7TH ST N
NAPLES, FL 34102
Collier County (239) 624-3997
ASHLEIGH TONDO
Nurse Anesthetist, Certified Registered
350 7TH ST N
NAPLES, FL 34102
Collier County (239) 624-5000
BARBARA JANET RAMOS DNP CRNA
Nurse Anesthetist, Certified Registered
350 7TH ST N
NAPLES, FL 34102
Collier County (239) 624-5000
DR. IVAN J SELIGMAN MD
Pathology (Anatomic Pathology & Clinical Pathology)
350 7TH ST N
NAPLES, FL 34102
Collier County (813) 263-5107
DR. LESLIE ANN RAYMOND MD
Hospitalist
350 7TH ST N
NAPLES, FL 34102
Collier County (239) 624-5000
JOHN WAYNE SPONAUGLE DO
Emergency Medicine
350 7TH ST N
NAPLES, FL 34102
Collier County (239) 436-5000
DR. ADOLFO SOTO M.D.
Hospitalist
350 7TH ST N
NAPLES, FL 34102
Collier County (239) 624-3997
DR. MADELINE DEUTSCH MD
Hospitalist
350 7TH ST N
NAPLES, FL 34102
Collier County (239) 624-0437

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Donald Mehlhorn's NPI number?

The NPI number for Donald Mehlhorn is 1912584947. It was assigned to this individual provider in the NPPES registry on March 25, 2021.

Where is Donald Mehlhorn located?

Donald Mehlhorn practices at 350 7th St N, Naples, FL 34102. The listed phone number is (239) 624-5000.

What is Donald Mehlhorn's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Donald Mehlhorn enrolled in Medicare?

Yes. Donald Mehlhorn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Donald Mehlhorn affiliated with any hospitals?

According to CMS data, Donald Mehlhorn is affiliated with Adventhealth Orlando.

When was this NPI record last updated?

The NPPES record for Donald Mehlhorn was last updated on May 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.