Dr. Nathaniel P. Fleischner
- Gender: Male
- Experience: 16 years
- Graduated from: Boston University School Of Medicine
- Graduation year: 2005
- Sole propriator: No
- NPI: 1083880926
Dr. Nathaniel P. Fleischner M.D.
Internist
He is located at 11700 Okeechobee Boulevard in Royal Palm Beach, FL 33411. Can help patients with the following: Bladder Control, Edema, Heart Disease, Hyperlipidemia, Influenza, Urethritis. His National Provider Identifier (NPI) number is 1083880926. Appointment can be made via the phone number (561) 790-0789. He is affiliated with 2 practices and 1 hospitals.
Conditions treated
Dr. Nathaniel P. Fleischner, being an internist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Nathaniel P. Fleischner.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Influenza
- Inguinal Hernia
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Prescription Refill
- Urethritis
- Urinary Tract Infection (UTI)
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Nathaniel P. Fleischner as in-network for the following 2026 plans.
Health plans
Oscar Health Maintenance Organization of Florida
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 26 plans from Oscar Health Maintenance Organization of Florida
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Classic 4700 | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Classic 4700 | with AdventHealth | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Classic Standard (2 plan variants) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Classic Standard | with AdventHealth | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Elite + PCP Saver Plus | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Elite + PCP Saver Plus | with AdventHealth | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Breathe Easy with Enhanced COPD Benefits (2 plan variants) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Chronic Care CKM (2 plan variants) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Diabetes (2 plan variants) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Gold Classic Standard (2 plan variants) | HMO · Gold | Preferred | Accepting new patients |
| Gold Classic Standard | with AdventHealth | HMO · Gold | Preferred | Accepting new patients |
| Gold Elite Saver Plus | with AdventHealth | HMO · Gold | Preferred | Accepting new patients |
| Gold Simple | HMO · Gold | Preferred | Accepting new patients |
| Gold Simple | with AdventHealth | HMO · Gold | Preferred | Accepting new patients |
| Silver Classic Standard (2 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Classic Standard | with AdventHealth | HMO · Silver | Preferred | Accepting new patients |
| Silver Elite | HMO · Silver | Preferred | Accepting new patients |
| Silver Elite | with AdventHealth | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Breathe Easy with Enhanced COPD Benefits (2 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Chronic Care CKM | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Chronic Care CKM | with AdventHealth | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Diabetes | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Diabetes | with AdventHealth | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver | with AdventHealth | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Women's Health with Menopause Benefits (2 plan variants) | HMO · Silver | Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Nathaniel P. Fleischner is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Nathaniel P. Fleischner is enrolled to bill Medicare as a Practitioner - Internal Medicine .
Bills through: Accountable Teaching Services Llc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| AstraZeneca | $47 |
| Zoll Medical | $17 |
| Valeant Pharmaceuticals North America | $15 |
Other
| Food and Beverage | $97 |
Studies
BOSTON UNIVERSITY SCHOOL OF MEDICINE
Graduated in 2005Other ways to reach out
- Facebook: https://www.facebook.com/nathanielfleischnermd
Additional Specialities
- General Practitioner
- Preventive Medicine Specialist
Looking for more Internists?
There are 9 other internists in this region.
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- Address: Suite 209 955 Sansburys Way West Palm Beach, 33411, FL
- Gender: Male
- Address: Suite 5A 11301 Okeechobee Boulevard Royal Palm Beach, 33411, FL
- Gender: Female
- Address: Suite 5A 11301 Okeechobee Boulevard Royal Palm Beach, 33411, FL
- Gender: Female
- Address: 8900 North Kendall Drive Miami, 33176, FL
- Gender: Male
- Address: Suite 5A 11301 Okeechobee Boulevard Royal Palm Beach, 33411, FL
- Gender: Female
- Address: 10299 Southern Boulevard Royal Palm Beach, 33411, FL
- Gender: Female
- Address: Royal Palm Beach 10299 Southern Boulevard Royal Palm Beach, 33411, FL
- Gender: Male
- Address: Suite A 1410 Royal Palm Beach Boulevard Royal Palm Beach, 33411, FL
- Gender: Male
- Address: 11337 Okeechobee Boulevard Royal Palm Beach, 33411, FL
- Gender: Male
- Address: Suite 5A 11301 Okeechobee Boulevard Royal Palm Beach, 33411, FL
Questions & Answers
Where can you meet with Dr. Nathaniel P. Fleischner?
Dr. Nathaniel P. Fleischner's office is located at 11700 Okeechobee Boulevard in Royal Palm Beach, FL 33411.
What conditions does Dr. Nathaniel P. Fleischner treat?
Dr. Nathaniel P. Fleischner provides treatment for Bladder Control, Edema, Heart Disease, Hyperlipidemia, Influenza, Urethritis. For the full list see this list.
Has Dr. Nathaniel P. Fleischner affiliation with hospitals?
Dr. Nathaniel P. Fleischner is affiliated with WELLINGTON REGIONAL MEDICAL CENTER LLC.
Does Dr. Nathaniel P. Fleischner have affiliation with practices?
Dr. Nathaniel P. Fleischner is affiliated with MD Now Medical Centers. For the full list of practices see this list.
Does Dr. Nathaniel P. Fleischner accept insurance?
Dr. Nathaniel P. Fleischner is listed in-network for 26 ACA Marketplace (Obamacare/HealthCare.gov) plans from Oscar Health Maintenance Organization of Florida. See the Marketplace plans section for details.