Active NPI 1992789747 Individual Practitioner Male Practitioner

Dr. Jefferson William Chen , MD PHD

Neurological Surgery • Orange, CA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Jefferson Chen, MD PHD is a certified Neurological Surgery practicing in Orange, CA. With approximately 39 years of clinical experience since graduating from Johns Hopkins University School Of Medicine in 1987, Dr. Chen delivers high-quality medical care to the local community at 101 THE CITY DR S.

Dr. Chen is affiliated with Regents Of The University Of California and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, reprogramming of programmable brain and spinal fluid shunt, subsequent hospital care with moderate levelof 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

101 The City Dr S

Orange, CA 928683201

Telephone 7148807812

Associated Practice Facility / Clinic

🏢 The Department Of Psychiatry Facility NPI 1831159003

Medicare Profile & Education

Medical School

Johns Hopkins University School Of Medicine

Graduation Year

1987

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Neurological Surgery in Orange, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

39 Yrs +17.8 yrs vs City Avg

City Avg: 21.2 Yrs

State Avg: 26.2 Yrs

Regional Practice Density

28 Specialists

Practicing in Orange, CA (999 Statewide)

Telehealth Adoption Rate

50.0% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

80.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Chen (39 Years) 39 Yrs

Orange Specialty Average (21.2 Years) 21.2 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	167	108	$430.00	$100.66
99213 Established patient office or other outpatient visit, typically 15 minutes	103	78	$291.00	$68.49
62252 Reprogramming of programmable brain and spinal fluid shunt	65	44	$203.00	$45.33
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	54	15	$454.00	$121.80
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	42	20	$332.00	$81.08
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	39	34	$633.00	$149.93
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	35	35	$739.00	$138.08
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	20	20	$797.00	$188.24
61781 Computer-assisted procedure inside brain	19	18	$1028.00	$232.60
62223 Creation of brain fluid drainage shunt	16	16	$4633.00	$695.96
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	13	13	$597.00	$134.49
99221 Initial hospital inpatient care per day, typically 30 minutes	11	11	$441.00	$84.67
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	11	11	$882.00	$179.30

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	134	80	$430.00	$103.77
99213 Established patient office or other outpatient visit, typically 15 minutes	66	49	$291.00	$70.42
62252 Reprogramming of programmable brain and spinal fluid shunt	48	31	$203.00	$46.42
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	40	31	$633.00	$151.20
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	32	22	$328.81	$83.46
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	25	25	$797.00	$186.88
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	24	24	$597.00	$136.69
99221 Initial hospital inpatient care per day, typically 30 minutes	21	19	$441.00	$88.44
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$658.50	$142.58
62223 Creation of brain fluid drainage shunt	15	15	$4633.00	$701.69

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	148	85	$430.00	$105.07
99213 Established patient office or other outpatient visit, typically 15 minutes	68	45	$291.00	$71.43
62252 Reprogramming of programmable brain and spinal fluid shunt	51	26	$203.00	$47.53
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	46	17	$315.00	$75.06
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	35	35	$587.00	$144.29
99231 Follow-up hospital inpatient care per day, typically 15 minutes	35	17	$170.00	$40.54
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	32	12	$454.00	$108.15
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	30	29	$582.77	$138.78
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	29	22	$633.00	$155.95
62223 Creation of brain fluid drainage shunt	21	21	$4633.00	$667.97
61781 Computer-assisted procedure inside brain	16	16	$1028.00	$243.23
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	15	13	$882.00	$202.28
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	12	12	$797.00	$195.17
99221 Initial hospital inpatient care per day, typically 30 minutes	12	12	$441.00	$105.43

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	117	79	$379.44	$108.40
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	41	24	$454.00	$111.40
99221 Initial hospital inpatient care per day, typically 30 minutes	39	38	$441.00	$108.39
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	32	32	$571.91	$147.92
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	31	21	$315.00	$77.50
99213 Established patient office or other outpatient visit, typically 15 minutes	30	26	$247.93	$73.25
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	29	24	$551.90	$159.70
61781 Computer-assisted procedure inside brain	22	21	$1028.00	$249.35
62252 Reprogramming of programmable brain and spinal fluid shunt	19	13	$203.00	$48.83
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	$750.80	$200.94
62223 Creation of brain fluid drainage shunt	14	14	$4633.00	$685.10
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	11	11	$597.00	$146.51

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	95	62	$222.48	$55.80
99221 Initial hospital inpatient care per day, typically 30 minutes	48	46	$440.08	$110.31
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	38	19	$314.63	$78.65
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	31	23	$342.48	$85.99
62252 Reprogramming of programmable brain and spinal fluid shunt	27	16	$203.00	$49.10
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	20	15	$454.00	$113.62
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	17	17	$734.00	$183.72
61781 Computer-assisted procedure inside brain	16	16	$1028.00	$250.21
99231 Follow-up hospital inpatient care per day, typically 15 minutes	16	12	$170.00	$42.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	151	74	$222.00	$54.67
99221 Initial hospital inpatient care per day, typically 30 minutes	45	43	$439.00	$107.62
62252 Reprogramming of programmable brain and spinal fluid shunt	39	20	$203.00	$48.52
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	36	28	$342.00	$84.54
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	34	17	$314.00	$77.70
99231 Follow-up hospital inpatient care per day, typically 15 minutes	29	17	$170.00	$41.96
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	21	11	$454.00	$111.08
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	18	18	$734.00	$179.73
61312 Aspiration of blood accumulation in brain	12	11	$9132.00	$2059.18

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	136	83	$222.00	$54.77
99221 Initial hospital inpatient care per day, typically 30 minutes	43	41	$439.00	$107.52
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	42	32	$342.00	$83.92
62252 Reprogramming of programmable brain and spinal fluid shunt	28	17	$203.00	$48.32
99231 Follow-up hospital inpatient care per day, typically 15 minutes	21	14	$170.00	$41.73
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	19	11	$314.00	$77.73
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	16	16	$734.00	$179.62
61781 Computer-assisted procedure inside brain	12	12	$1028.00	$247.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	152	96	$214.12	$54.58
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	56	36	$297.30	$77.27
99221 Initial hospital inpatient care per day, typically 30 minutes	56	53	$403.00	$107.30
99231 Follow-up hospital inpatient care per day, typically 15 minutes	40	26	$166.40	$41.95
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	29	24	$311.52	$84.32
61312 Aspiration of blood accumulation in brain	15	12	$8583.00	$2034.23

Medical Specialties & State Licenses

CMS Verified: 2022-11-03

Neurological Surgery Primary Specialty

NUCC Taxonomy Code: 207T00000X

State License CA A45489

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.

Neurological Surgery

NUCC Taxonomy Code: 207T00000X

State License OR MD21924

Neurological Surgery

NUCC Taxonomy Code: 207T00000X

State License TX J6902

Neurological Surgery

NUCC Taxonomy Code: 207T00000X

State License AZ 21671

Hospital & Practice Group Affiliations

Regents Of The University Of California

101 The City Dr S, Orange, CA 928683201

Phone: 7144567004

Secondary Practice Locations

501 N Graham St, Pacific Neursurgical Pc #580

Portland, OR 972271654

Phone: 5037886721

Practice Associates & Co-Workers

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

40 Associated Practitioners

Miranda Ideal , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003378944

Certified Registered Nurse Anesthetist

Dr. David Floriolli , MD

Radiology - Neuroradiology

NPI 1013233212

Doctor of Medicine (M.D.)

Dr. Jesse Goitia , MD

Internal Medicine - Cardiovascular Disease

NPI 1013301290

Doctor of Medicine (M.D.)

Elen Araya , FNP

Nurse Practitioner

NPI 1023225281

Family Nurse Practitioner

Dr. Hayley Kristinsson , PsyD

Clinical Neuropsychologist

NPI 1023500493

Doctor of Psychology (Psy.D.)

Dr. Madushka De Zoysa , MD

Obstetrics & Gynecology

NPI 1023533387

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 Practice Location November 03, 2022

Registered at 101 THE CITY DR S, ORANGE, CA 928683201 (Tel: 7148807812)

📍

Updated Business Mailing Address November 03, 2022

Registered at 200 S MANCHESTER AVE STE 300, ORANGE, CA 928683219 (Tel: 7144562986)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 03, 2022

Neurological Surgery (License #MD21924 in OR)

✅

NPI Profile Active November 04, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location November 04, 2008

Registered at 501 N GRAHAM ST, PACIFIC NEURSURGICAL PC #580, PORTLAND, OR 972271654 (Tel: 5037886721)

📍

Updated Business Mailing Address November 04, 2008

Registered at 501 N GRAHAM ST, PACIFIC NEURSURGICAL PC #580, PORTLAND, OR 972271654 (Tel: 5035280704)

👤

Provider Name / Credentials Updated November 04, 2008

Recorded as JEFFERSON CHEN, MD PHD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 04, 2008

Neurological Surgery (License #MD21924 in OR)

🟢

Initial NPI Registration & Enumeration December 05, 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: 1992789747

Entity Type:

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

Enumeration Date: December 05, 2005

Last Update: November 03, 2022

Sole Proprietor: No

Update or Correct Profile

Mailing Address

200 S Manchester Ave Ste 300

Orange, CA 928683219

Phone: 7144562986

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.