Active NPI 1083880926 Individual Practitioner Male Practitioner

Dr. Nathaniel P Fleischner , MD

Internal Medicine • Royal Palm Beach, FL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Nathaniel Fleischner, MD is a certified Internal Medicine practicing in Royal Palm Beach, FL. With approximately 21 years of clinical experience since graduating from Boston University School Of Medicine in 2005, Dr. Fleischner delivers high-quality medical care to the local community at 11700 OKEECHOBEE BLVD.

Dr. Fleischner is affiliated with Accountable Teaching Services Llc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, insertion of needle into vein for collection of blood sample, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

11700 Okeechobee Blvd

Royal Palm Beach, FL 334118721

Telephone 5617900789

Fax 8557533317

Associated Practice Facility / Clinic

🏢 Royal Palm Medical Center, Llc Facility NPI 1770543431

Medicare Profile & Education

Medical School

Boston University School Of Medicine

Graduation Year

2005

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Royal Palm Beach, FL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

21 Yrs -6.8 yrs vs City Avg

City Avg: 27.8 Yrs

State Avg: 26.5 Yrs

Regional Practice Density

7 Specialists

Practicing in Royal Palm Beach, FL (10650 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

70.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Fleischner (21 Years) 21 Yrs

Royal Palm Beach Specialty Average (27.8 Years) 27.8 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	129	56	$348.52	$91.69
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	58	37	$340.55	$129.31
36415 Insertion of needle into vein for collection of blood sample	39	28	$35.77	$8.65
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	37	37	$426.93	$129.66
G0444 Annual depression screening, 5 to 15 minutes	30	30	$81.65	$18.68
G0442 Annual alcohol misuse screening, 5 to 15 minutes	15	15	$77.96	$18.82
71046 X-ray of chest, 2 views	11	11	$147.40	$33.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	120	72	$183.00	$92.13
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	101	56	$267.33	$130.17
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	62	17	$520.00	$75.83
36415 Insertion of needle into vein for collection of blood sample	49	36	$16.33	$8.40
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	31	17	$746.00	$122.49
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	29	29	$201.72	$130.71
71046 X-ray of chest, 2 views	27	25	$120.15	$32.25
G0444 Annual depression screening, 5 to 15 minutes	25	25	$48.00	$18.52
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	18	18	$1449.00	$170.17
99238 Hospital discharge day management, 30 minutes or less	16	16	$523.00	$78.57

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	596	208	$510.51	$73.56
99238 Hospital discharge day management, 30 minutes or less	145	140	$516.37	$73.93
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	115	89	$734.90	$105.43
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	88	86	$1434.67	$204.55
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	72	69	$986.92	$140.13
99239 Hospital discharge day management, more than 30 minutes	25	24	$751.40	$107.59
99217 Hospital observation care on day of discharge	11	11	$509.91	$73.58

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	601	211	$345.46	$74.81
99238 Hospital discharge day management, 30 minutes or less	136	133	$349.35	$74.95
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	125	108	$520.04	$107.51
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	52	51	$915.88	$208.74
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	33	33	$659.21	$142.42
99239 Hospital discharge day management, more than 30 minutes	13	13	$451.00	$108.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	426	175	$308.04	$76.41
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	121	82	$416.20	$108.67
99238 Hospital discharge day management, 30 minutes or less	107	103	$302.11	$76.25
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	66	65	$837.27	$213.10
99220 Hospital observation care, typically 70 minutes	40	39	$634.58	$189.14
99217 Hospital observation care on day of discharge	36	35	$285.25	$74.45
99231 Follow-up hospital inpatient care per day, typically 15 minutes	34	19	$163.06	$40.54
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	30	30	$635.50	$147.19
99239 Hospital discharge day management, more than 30 minutes	29	29	$489.90	$111.40
99226 Subsequent observation care, typically 35 minutes per day	17	15	$329.59	$106.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99220 Hospital observation care, typically 70 minutes	102	99	$564.00	$189.01
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	83	61	$58.00	$8.66
99217 Hospital observation care on day of discharge	80	77	$248.00	$74.12
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	77	44	$324.00	$105.89
99238 Hospital discharge day management, 30 minutes or less	33	32	$262.00	$74.12
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	31	27	$589.00	$206.08
99226 Subsequent observation care, typically 35 minutes per day	30	25	$295.00	$106.43
99231 Follow-up hospital inpatient care per day, typically 15 minutes	28	16	$160.00	$40.23
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	28	17	$225.00	$74.11
99239 Hospital discharge day management, more than 30 minutes	20	19	$349.00	$108.52
99224 Subsequent observation care, typically 15 minutes per day	14	13	$116.00	$40.57

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	143	87	$69.00	$45.61
36415 Insertion of needle into vein for collection of blood sample	103	73	$3.10	$2.94
99213 Established patient office or other outpatient visit, typically 15 minutes	77	59	$115.00	$75.80
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	46	20	$218.99	$73.45
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	34	34	$226.74	$120.31
99220 Hospital observation care, typically 70 minutes	30	28	$553.00	$187.37
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	28	24	$57.00	$8.53
99217 Hospital observation care on day of discharge	23	23	$243.00	$73.28
99238 Hospital discharge day management, 30 minutes or less	20	19	$247.05	$73.71
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	15	14	$577.80	$204.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	173	88	$81.93	$75.04
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	142	46	$218.83	$72.47
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	137	87	$55.60	$45.05
36415 Insertion of needle into vein for collection of blood sample	87	69	$3.10	$2.94
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	50	50	$162.78	$117.47
G0008 Administration of influenza virus vaccine	38	38	$40.00	$25.99
90662 Influenza vaccine split virus, preservative free	29	29	$66.45	$46.56
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	22	$123.82	$110.73
99238 Hospital discharge day management, 30 minutes or less	23	21	$214.40	$72.95
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	17	13	$319.00	$104.59
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	16	16	$614.80	$203.84
99217 Hospital observation care on day of discharge	14	12	$222.00	$72.83

Medical Specialties & State Licenses

CMS Verified: 2025-06-23

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License FL ME105685

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

001631600 (FL)

Hospital & Practice Group Affiliations

Accountable Teaching Services Llc

10101 Forest Hill Blvd, Wellington, FL 334146103

Phone: 5617661301

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

6 Associated Practitioners

Dr. William Stechschulte , DO

Internal Medicine

NPI 1306119540

Doctor of Osteopathic Medicine (D.O.)

Dr. Gina Joseph , MD

Internal Medicine

NPI 1346433737

Doctor of Medicine (M.D.)

Elizabeth Fricke , ARNP

Nurse Practitioner - Family

NPI 1366106486

Advanced Registered Nurse Practitioner

Sophia Padron , APRN

Nurse Practitioner - Family

NPI 1518592880

Advanced Practice Registered Nurse

Danielle Stook , FNP-C

Nurse Practitioner - Family

NPI 1881667004

Family Nurse Practitioner (Certified)

Dr. Sasha Baker , MD

Internal Medicine

NPI 1972943454

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Practice Location January 19, 2023

Registered at 11700 OKEECHOBEE BLVD, ROYAL PALM BEACH, FL 334118721 (Tel: 5617900789)

📍

Updated Business Mailing Address January 19, 2023

Registered at 11700 OKEECHOBEE BLVD, ROYAL PALM BEACH, FL 334118721 (Tel: 5617900789)

✅

NPI Profile Active January 18, 2012

NPI status registered as active in NPPES database

📍

Updated Practice Location January 18, 2012

Registered at 1000 W MORENO ST, PENSACOLA, FL 325012316 (Tel: 8504344011)

📍

Updated Business Mailing Address January 18, 2012

Registered at 102 W. PINELOCH AVE, SUITE 21, ORLANDO, FL 328066100 (Tel: 4074817471)

👤

Provider Name / Credentials Updated January 18, 2012

Recorded as NATHANIEL FLEISCHNER, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 18, 2012

Internal Medicine (License #ME105685 in FL)

🟢

Initial NPI Registration & Enumeration April 30, 2008

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1083880926

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: April 30, 2008

Last Update: June 23, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

11700 Okeechobee Blvd

Royal Palm Beach, FL 334118721

Phone: 5617900789

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.