Active NPI 1700804382 Individual Practitioner Male Practitioner

Dr. Gregory J. Withers , MD

Neurological Surgery • Arcadia, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Withers, MD is a certified Neurological Surgery practicing in Arcadia, CA. With approximately 53 years of clinical experience since graduating from University Of California, Geffen School Of Medicine in 1973, Dr. Withers delivers high-quality medical care to the local community at 301 W HUNTINGTON DRIVE.

Dr. Withers is affiliated with Usc Care Medical Group Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, initial hospital care with straightforward or low-level medical decision making, if using time, at least, new 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

301 W Huntington Drive
Suite 407

Arcadia, CA 910071504

Telephone 6268213440

Fax 6268210709

Associated Practice Facility / Clinic

🏢 Gregory J Withers Md Inc A Medical Corp Facility NPI 1619020484

Medicare Profile & Education

Medical School

University Of California, Geffen School Of Medicine

Graduation Year

1973

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Neurological Surgery in Arcadia, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

53 Yrs +13.0 yrs vs City Avg

City Avg: 40.0 Yrs

State Avg: 26.2 Yrs

Regional Practice Density

3 Specialists

Practicing in Arcadia, CA (999 Statewide)

Telehealth Adoption Rate

66.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

63.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Withers (53 Years) 53 Yrs

Arcadia Specialty Average (40.0 Years) 40.0 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	104	55	$275.00	$98.66
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	40	40	$320.00	$134.89
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	33	33	$600.00	$179.33
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	33	24	$400.00	$137.93
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	25	18	$170.00	$81.51
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	21	20	$470.00	$178.33

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	135	69	$148.33	$98.38
99231 Follow-up hospital inpatient care per day, typically 15 minutes	56	35	$101.43	$51.88
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	55	28	$146.36	$83.20
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	46	46	$344.35	$182.37
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	26	$254.05	$138.65
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	36	36	$277.22	$136.61
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	32	32	$359.38	$174.98

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	131	45	$100.00	$40.73
99213 Established patient office or other outpatient visit, typically 15 minutes	100	55	$125.00	$99.90
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	54	54	$250.00	$142.82
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	34	34	$300.00	$209.75
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	31	31	$200.00	$122.94
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	18	18	$250.00	$183.12
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	13	11	$175.00	$141.35

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	146	59	$88.77	$41.00
99213 Established patient office or other outpatient visit, typically 15 minutes	79	48	$116.46	$101.32
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	56	56	$250.00	$145.27
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	48	48	$300.00	$214.15
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	39	32	$153.85	$139.79
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	30	21	$109.00	$76.84
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	20	20	$178.75	$124.38
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$223.33	$184.79

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	89	52	$100.00	$83.39
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	77	77	$250.00	$148.50
99231 Follow-up hospital inpatient care per day, typically 15 minutes	55	36	$80.00	$42.37
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	33	19	$100.00	$78.56
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$150.00	$119.39
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	19	19	$300.00	$218.70
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	13	12	$60.00	$51.03

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	152	75	$100.00	$81.64
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	71	70	$250.00	$145.40
99231 Follow-up hospital inpatient care per day, typically 15 minutes	67	38	$80.00	$41.77
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	49	49	$150.00	$118.37
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	32	23	$60.00	$50.13
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	22	22	$300.00	$215.19
61312 Aspiration of blood accumulation in brain	12	12	$4500.00	$2193.76

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	125	67	$100.00	$75.69
99231 Follow-up hospital inpatient care per day, typically 15 minutes	96	49	$80.00	$39.36
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	59	59	$250.00	$137.35
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	46	46	$150.00	$111.45
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	42	42	$300.00	$204.09
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	30	26	$60.00	$46.06
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	27	19	$100.00	$73.30

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	160	72	$99.25	$77.62
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	63	63	$300.00	$209.64
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	57	39	$100.00	$74.73
99231 Follow-up hospital inpatient care per day, typically 15 minutes	56	39	$80.00	$40.52
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	51	51	$150.00	$114.52
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	43	31	$60.00	$46.78
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	37	37	$250.00	$141.46

Medical Specialties & State Licenses

Neurological Surgery Primary Specialty

NUCC Taxonomy Code: 207T00000X

State License CA G27800

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

00G278000 (CA)

Hospital & Practice Group Affiliations

Usc Care Medical Group Inc

1520 San Pablo St, Los Angeles, CA 900335310

Phone: 8008722273

Usc Care Medical Group Inc

1520 San Pablo St, Los Angeles, CA 900335310

Phone: 8008722273

Usc Care Medical Group Inc

300 W Hungtington Dr, Arcadia, CA 910073402

Phone: 6268988000

Usc Care Medical Group Inc

1520 San Pablo St 1st Floor N, Los Angeles, CA 900335310

Phone: 8008722273

Practice Associates & Co-Workers

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

4 Associated Practitioners

Dr. Douglas Yun , MD

Internal Medicine - Cardiovascular Disease

NPI 1487611679

Doctor of Medicine (M.D.)

Dr. Larry Webber , DDS

Dentist

NPI 1508086646

Doctor of Dental Surgery

Dr. Nabil Dahi , MD

Pain Medicine - Interventional Pain Medicine

NPI 1639369697

Doctor of Medicine (M.D.)

Dr. Stephen Soldo , MD

Internal Medicine - Cardiovascular Disease

NPI 1851356745

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active April 16, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location April 16, 2008

Registered at 301 W HUNTINGTON DRIVE, SUITE 407, ARCADIA, CA 910071504 (Tel: 6268213440)

📍

Updated Business Mailing Address April 16, 2008

Registered at 301 W HUNTINGTON DR, SUITE 407, ARCADIA, CA 910071504 (Tel: 6268213440)

👤

Provider Name / Credentials Updated April 16, 2008

Recorded as GREGORY WITHERS, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 16, 2008

Neurological Surgery (License #G27800 in CA)

🟢

Initial NPI Registration & Enumeration July 18, 2006

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: 1700804382

Entity Type:

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

Enumeration Date: July 18, 2006

Last Update: April 16, 2008

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

301 W Huntington Dr, Suite 407

Arcadia, CA 910071504

Phone: 6268213440

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.