Active NPI 1689662066 Individual Practitioner Male Practitioner

Dr. Dennis Yk Wen , MD

Neurological Surgery • Elgin, IL

Professional Overview & Biography Verified Profile Summary

Dr. Dennis Wen, MD is a registered healthcare professional specializing in Neurological Surgery in Elgin, IL. Practice services are available at 87 N AIRLITE ST STE 220 under active NPI credentials.

Frequently performed procedures and clinical services include follow-up hospital inpatient care per day, 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. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

87 N Airlite St Ste 220

Elgin, IL 601234995

Telephone 8476956611

Fax 8476958069

Associated Practice Facility / Clinic

🏢 Dennis Wen Facility NPI 1245424993

Specialty Benchmarks & Practice Insights

Comparative analytics for Neurological Surgery in Elgin, IL

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 44.5 Yrs

State Avg: 26.9 Yrs

Regional Practice Density

6 Specialists

Practicing in Elgin, IL (397 Statewide)

Telehealth Adoption Rate

16.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

3.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2023)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	146	40	$48.14	$47.37
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	67	39	$81.55	$80.26
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	50	50	$196.57	$179.08
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	47	47	$229.79	$223.76
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	43	36	$133.05	$130.97
99213 Established patient office or other outpatient visit, typically 15 minutes	36	30	$95.04	$93.56
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	24	16	$123.22	$121.25
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	14	$142.39	$134.92
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	14	13	$186.95	$183.95

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	165	37	$42.15	$40.26
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	54	30	$77.78	$73.71
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	52	44	$130.35	$128.89
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	48	48	$216.04	$205.22
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	39	39	$225.78	$223.81
99213 Established patient office or other outpatient visit, typically 15 minutes	33	28	$92.83	$91.92
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	22	17	$111.37	$106.08
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$147.53	$140.67
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	12	$183.07	$181.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	121	43	$41.70	$40.05
99213 Established patient office or other outpatient visit, typically 15 minutes	59	49	$94.02	$94.02
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	53	53	$212.62	$209.48
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	42	21	$75.49	$75.16
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	38	38	$231.85	$231.85
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	27	25	$132.33	$132.10
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	16	11	$107.94	$107.94
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	13	13	$143.04	$142.66
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	12	$57.98	$57.98

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	227	54	$43.90	$41.92
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	83	83	$218.40	$214.95
99213 Established patient office or other outpatient visit, typically 15 minutes	49	38	$80.50	$79.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	45	36	$115.93	$115.56
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	42	32	$76.91	$76.68
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	36	36	$222.12	$221.33
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	20	19	$155.58	$154.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	248	57	$42.03	$41.36
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	83	82	$218.00	$211.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	70	57	$115.98	$113.86
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	68	68	$223.69	$217.62
99213 Established patient office or other outpatient visit, typically 15 minutes	66	55	$79.01	$77.89
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	49	31	$77.45	$76.21
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	16	$155.01	$152.54
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	17	15	$110.60	$108.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	255	69	$43.65	$38.96
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	78	78	$219.54	$201.26
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	72	55	$114.65	$106.50
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	71	71	$221.98	$206.22
99213 Established patient office or other outpatient visit, typically 15 minutes	47	39	$77.84	$72.44
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	29	19	$77.60	$72.13
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	13	12	$111.25	$103.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	242	80	$42.35	$39.85
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	75	75	$216.47	$205.58
99213 Established patient office or other outpatient visit, typically 15 minutes	73	57	$77.80	$74.03
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	62	51	$114.26	$108.85
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	43	43	$221.40	$210.33
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	34	26	$76.79	$72.89
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	22	19	$111.22	$105.60

Medical Specialties & State Licenses

CMS Verified: 2025-05-29

Neurological Surgery Primary Specialty

NUCC Taxonomy Code: 207T00000X

State License IL 036-095129

A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

036095129 (IL)

Commercial Insurance / Payer ID Bcbs

21602371 (IL)

Practice Associates & Co-Workers

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

4 Associated Practitioners

Dr. Ailee Wang , MD

Family Medicine

NPI 1003402751

Doctor of Medicine (M.D.)

Dr. Christopher Cascino , MD

Neurological Surgery

NPI 1144218553

Doctor of Medicine (M.D.)

Dr. Byong-Uk Chung , MD

Neurological Surgery

NPI 1902894454

Doctor of Medicine (M.D.)

Dr. Young Chung , MD

Neurological Surgery

NPI 1932197316

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

9 Historical Events

📍

Updated Business Mailing Address May 29, 2025

Registered at 5 MARMON LN, BARRINGTON, IL 600104025 (Tel: 8477108860)

📍

Updated Practice Location April 04, 2019

Registered at 87 N AIRLITE ST STE 220, ELGIN, IL 601234995 (Tel: 8476956611)

📍

Updated Business Mailing Address April 04, 2019

Registered at 87 N AIRLITE ST STE 220, ELGIN, IL 601234995 (Tel: 8476956611)

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 901 CENTER ST, SUITE 305, ELGIN, IL 601202104 (Tel: 8476956611)

📍

Updated Business Mailing Address July 08, 2007

Registered at 901 CENTER ST, SUITE 305, ELGIN, IL 601202104 (Tel: 8476956611)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as DENNIS WEN, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Neurological Surgery (License #036-095129 in IL)

🟢

Initial NPI Registration & Enumeration October 11, 2005

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: 1689662066

Entity Type:

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

Enumeration Date: October 11, 2005

Last Update: May 29, 2025

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

5 Marmon Ln

Barrington, IL 600104025

Phone: 8477108860

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.