Active NPI 1619130804 Individual Practitioner Male Practitioner

Dr. Jonathan David Klonsky , MD

Surgery • West Islip, NY

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Jonathan Klonsky, MD is a certified Surgery practicing in West Islip, NY. With approximately 24 years of clinical experience since completing medical education in 2002, Dr. Klonsky delivers high-quality medical care to the local community at 754 MONTAUK HWY.

Dr. Klonsky is affiliated with North Shore-Lij Medical Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, initial hospital care with moderate level of medical decision making, if using time, at least, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

754 Montauk Hwy

West Islip, NY 11795

Telephone 6314220909

Fax 6314226660

Associated Practice Facility / Clinic

🏢 Eli Anker M.d.,p.c. Facility NPI 1588767438

Medicare Profile & Education

Medical School

Other

Graduation Year

2002

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in West Islip, NY

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

24 Yrs -0.7 yrs vs City Avg

City Avg: 24.7 Yrs

State Avg: 27.8 Yrs

Regional Practice Density

17 Specialists

Practicing in West Islip, NY (2269 Statewide)

Telehealth Adoption Rate

11.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

80.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Klonsky (24 Years) 24 Yrs

West Islip Specialty Average (24.7 Years) 24.7 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
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	93	50	$322.00	$88.62
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	70	68	$879.00	$195.88
99213 Established patient office or other outpatient visit, typically 15 minutes	38	28	$494.00	$105.76
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	32	32	$917.00	$188.92
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	31	25	$689.00	$148.68
99231 Follow-up hospital inpatient care per day, typically 15 minutes	23	14	$182.00	$54.03
43999 Stomach procedure	23	11	$410.43	$149.53
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	19	15	$979.00	$199.88
99283 Emergency department visit with low level of medical decision making	12	12	$400.00	$81.19
49650 Repair of groin hernia using an endoscope	12	12	$4642.75	$733.43

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	67	33	$322.00	$89.90
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	56	55	$879.00	$199.90
99231 Follow-up hospital inpatient care per day, typically 15 minutes	37	24	$182.00	$58.24
99213 Established patient office or other outpatient visit, typically 15 minutes	32	26	$494.00	$105.92
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	27	27	$917.00	$195.83
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	26	20	$689.00	$149.31
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	18	15	$979.00	$198.77
43999 Stomach procedure	17	14	$411.29	$154.84
99283 Emergency department visit with low level of medical decision making	11	11	$400.00	$84.95

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	102	48	$322.00	$83.92
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	68	65	$879.00	$233.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	35	30	$689.00	$152.95
99231 Follow-up hospital inpatient care per day, typically 15 minutes	33	20	$182.00	$46.17
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	26	26	$917.00	$197.41
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	25	23	$979.00	$217.21
99213 Established patient office or other outpatient visit, typically 15 minutes	15	15	$494.00	$80.04
99283 Emergency department visit with low level of medical decision making	11	11	$400.00	$88.47

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	93	45	$322.00	$85.43
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	75	75	$879.00	$238.20
99231 Follow-up hospital inpatient care per day, typically 15 minutes	51	26	$182.00	$45.33
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	21	21	$736.00	$199.18
99213 Established patient office or other outpatient visit, typically 15 minutes	18	17	$383.00	$111.45
99213 Established patient office or other outpatient visit, typically 15 minutes	15	15	$383.00	$77.86
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	15	14	$475.00	$157.43
47562 Removal of gallbladder using an endoscope	14	14	$3298.82	$855.25
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	13	12	$662.38	$219.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	84	52	$182.00	$46.92
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	71	70	$879.00	$240.75
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	69	45	$322.00	$85.64
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	32	24	$475.00	$127.05
99213 Established patient office or other outpatient visit, typically 15 minutes	20	19	$383.00	$90.44
47562 Removal of gallbladder using an endoscope	14	14	$3298.82	$832.83
49505 Repair of groin hernia (5 years or older)	13	13	$2593.23	$704.54
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	12	12	$736.00	$198.51

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	97	50	$182.00	$45.47
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	59	59	$879.00	$229.99
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	55	32	$322.00	$82.71
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	38	30	$475.00	$118.33
99213 Established patient office or other outpatient visit, typically 15 minutes	18	15	$383.00	$83.41

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	47	24	$322.00	$80.70
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	46	45	$879.00	$228.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	43	34	$475.00	$122.22
99231 Follow-up hospital inpatient care per day, typically 15 minutes	34	17	$182.00	$44.97
99213 Established patient office or other outpatient visit, typically 15 minutes	31	21	$383.00	$82.89
43999 Stomach procedure	24	17	$411.17	$179.45
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	15	15	$919.00	$241.29
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	14	14	$641.00	$157.89
47562 Removal of gallbladder using an endoscope	12	12	$3421.00	$833.83

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	68	50	$475.00	$122.59
99231 Follow-up hospital inpatient care per day, typically 15 minutes	39	14	$182.00	$45.01
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	33	33	$879.00	$232.01
43999 Stomach procedure	29	22	$401.10	$169.66
99213 Established patient office or other outpatient visit, typically 15 minutes	28	23	$383.00	$84.78
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	23	23	$919.00	$240.24
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	20	17	$641.00	$166.93
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	11	11	$736.00	$176.70

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License NY 249630

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Commercial Insurance / Payer ID Aetna

9490348

Commercial Insurance / Payer ID Uhc

3153792

Commercial Insurance / Payer ID Bcbs

151TQ1

Commercial Insurance / Payer ID Cigna

8223776

Hospital & Practice Group Affiliations

North Shore-Lij Medical Pc

315 Crossways Park Dr, Woodbury, NY 117972066

Phone: 5168371645

Practice Associates & Co-Workers

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

2 Associated Practitioners

Dr. Eli Anker , MD

Surgery - Vascular Surgery

NPI 1093733255

Doctor of Medicine (M.D.)

Dr. Michael Chu , DO

Surgery

NPI 1275784670

Doctor of Osteopathic Medicine (D.O.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active January 17, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location January 17, 2014

Registered at 754 MONTAUK HWY, WEST ISLIP, NY 11795 (Tel: 6314220909)

📍

Updated Business Mailing Address January 17, 2014

Registered at 754 MONTAUK HWY, WEST ISLIP, NY 11795 (Tel: 6314220909)

👤

Provider Name / Credentials Updated January 17, 2014

Recorded as JONATHAN KLONSKY, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 17, 2014

Surgery (License #249630 in NY)

🟢

Initial NPI Registration & Enumeration July 08, 2008

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1619130804

Entity Type:

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

Enumeration Date: July 08, 2008

Last Update: January 17, 2014

Sole Proprietor: No

Update or Correct Profile

Mailing Address

754 Montauk Hwy

West Islip, NY 11795

Phone: 6314220909

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.