Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > CA Providers > Spine Surgeons

Dr. Ernest H. Sponzilli, MD

Accepting New Patients

(7 Ratings)

Specializes in: Spine Surgery, Orthopedics/Orthopedic Surgery and Physiatry (Physical Medicine & Rehabilitation)

Albany Medical College

75 Rowland Suite 250
Novato, CA 94945

(415) 878-2910

Dr. Ernest H. Sponzilli, MD is a spine surgeon in LARKSPUR, CA specializing in spine surgery, orthopedics/orthopedic surgery and physiatry (physical medicine & rehabilitation). He graduated from Albany Medical College. Dr. Ernest H. Sponzilli, MD is affiliated with Marin General Hospital and Hill Physicians.

Office Locations

2 BON AIR ROAD SUITE 120
LARKSPUR, CA 94939

open_in_new

Hill Physicians

75 Rowland Suite 250
Novato, CA 94945

(415) 878-2910

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Ernest H. Sponzilli, MD in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Volume:

greater occipital nerve block

nerve conduction studies

spinal procedures

By Affordability:

electrodiagnostic testing

electrophysiological study

neck X-ray

peripheral nerve block

spine X-ray

In 2023, among providers in related specialties within California, Dr. Ernest H. Sponzilli, MD performed more greater occipital nerve block, nerve conduction studies (NCS), and spinal procedures procedures for Medicare patients than 95% of them and he also had a list price for electrodiagnostic testing, electrophysiological (EP) study, neck X-ray, peripheral nerve block, and spine X-ray that was lower than the list prices billed to Medicare by 95% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 10%

By Volume:

nerve block

pain management

subarachnoid block with local anesthetic

transforaminal epidural steroid injection

X-rays

By Affordability:

X-rays

In 2023, among providers in related specialties within California, Dr. Ernest H. Sponzilli, MD performed more nerve block, pain management, subarachnoid block with local anesthetic (numbing medicine), transforaminal epidural steroid injection, and X-rays procedures for Medicare patients than 90% of them and he also had a list price for X-rays that was lower than the list prices billed to Medicare by 90% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

injections

minimally invasive procedures

nerve procedures

By Affordability:

sacroiliac joint injection

In 2012, among providers in related specialties within California, Dr. Ernest H. Sponzilli, MD performed more injections, minimally invasive procedures, and nerve procedures procedures for Medicare patients than 75% of them and he also had a list price for sacroiliac (SI) joint injection that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2012 were spinal procedures, diagnostic procedures, injections and pain management.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	78
diagnostic procedures	838
doctor visit	1372
hip imaging	11
injections	561
minimally invasive procedures	82
MRI (magnetic resonance imaging)	138
musculoskeletal imaging	33
nerve block	483
nerve procedures	69
pain management	552
pelvic imaging	90
removal of internal scar tissue	13
spinal procedures	903
X-rays	392

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2013 were spinal procedures, pain management, injections and nerve block.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	68
diagnostic procedures	138
doctor visit	1218
injections	636
minimally invasive procedures	114
MRI (magnetic resonance imaging)	127
nerve block	568
nerve procedures	92
pain management	660
pelvic imaging	36
removal of internal scar tissue	22
spinal procedures	902
X-rays	221

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	339
Female	568

**Ethnicity**
Non-Hispanic White	836
Black	18
Hispanic	23
Asian	16
Other	0
Native American	0

**Age**
From 65 to 74	364
From 75 to 84	287
85 and over	183
Less than 65	73

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2013

Hypertension	59
High Cholesterol	56
Stroke	6
Ischemic Heart Disease	32
Depression	19
Chronic Kidney Disease	15
Asthma	8
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	20
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2014 were spinal procedures, pain management, injections and nerve block.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	68
diagnostic procedures	173
doctor visit	1355
injections	708
minimally invasive procedures	104
MRI (magnetic resonance imaging)	150
nerve block	612
nerve procedures	104
pain management	744
pelvic imaging	49
spinal procedures	1028
X-rays	302

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	390
Female	597

**Ethnicity**
Non-Hispanic White	907
Black	0
Hispanic	23
Asian	25
Other	18
Native American	0

**Age**
From 65 to 74	403
From 75 to 84	351
85 and over	168
Less than 65	65

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2014

Hypertension	55
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	32
Depression	19
Chronic Kidney Disease	14
Asthma	8
Osteoperosis	12
Atrial Fibrilation	13
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	22
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2015 were spinal procedures, pain management, injections and nerve block.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	70
diagnostic procedures	160
doctor visit	1524
injections	725
minimally invasive procedures	113
MRI (magnetic resonance imaging)	102
musculoskeletal imaging	21
nerve block	622
nerve procedures	113
pain management	768
pelvic imaging	58
spinal procedures	1083
X-rays	421

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	814
Female	1238

**Ethnicity**
Non-Hispanic White	1870
Black	0
Hispanic	58
Asian	44
Other	48
Native American	0

**Age**
From 65 to 74	866
From 75 to 84	716
85 and over	344
Less than 65	126

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2015

Hypertension	56
High Cholesterol	53
Stroke	7
Ischemic Heart Disease	32
Depression	21
Chronic Kidney Disease	15
Asthma	10
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	20
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2016 were spinal procedures, pain management, injections and nerve block.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	76
diagnostic procedures	128
doctor visit	1521
injections	834
minimally invasive procedures	106
MRI (magnetic resonance imaging)	95
nerve block	758
nerve procedures	106
pain management	864
pelvic imaging	35
spinal procedures	1105
X-rays	287

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	433
Female	625

**Ethnicity**
Non-Hispanic White	973
Black	0
Hispanic	0
Asian	26
Other	30
Native American	0

**Age**
From 65 to 74	462
From 75 to 84	344
85 and over	187
Less than 65	65

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2016

Hypertension	56
High Cholesterol	51
Stroke	5
Ischemic Heart Disease	29
Depression	21
Chronic Kidney Disease	15
Asthma	13
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	19
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2017 were spinal procedures, injections, pain management and nerve block.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	92
diagnostic procedures	141
doctor visit	1377
injections	588
minimally invasive procedures	72
MRI (magnetic resonance imaging)	86
musculoskeletal imaging	27
nerve block	460
nerve procedures	72
pain management	568
pelvic imaging	46
spinal procedures	822
X-rays	331

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	370
Female	569

**Ethnicity**
Non-Hispanic White	853
Black	0
Hispanic	19
Asian	22
Other	33
Native American	0

**Age**
From 65 to 74	434
From 75 to 84	315
85 and over	143
Less than 65	47

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2017

Hypertension	55
High Cholesterol	48
Stroke	6
Ischemic Heart Disease	30
Depression	23
Chronic Kidney Disease	16
Asthma	8
Osteoperosis	12
Atrial Fibrilation	13
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	18
Dementia	9
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2018 were spinal procedures, injections, pain management and nerve block.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	47
diagnostic procedures	128
doctor visit	1182
injections	415
minimally invasive procedures	46
MRI (magnetic resonance imaging)	83
musculoskeletal imaging	25
nerve block	357
nerve procedures	46
pain management	414
pelvic imaging	53
spinal procedures	661
X-rays	288

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	372
Female	475

**Ethnicity**
Non-Hispanic White	769
Black	0
Hispanic	17
Asian	19
Other	30
Native American	0

**Age**
From 65 to 74	359
From 75 to 84	308
85 and over	131
Less than 65	49

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2018

Hypertension	57
High Cholesterol	53
Stroke	6
Ischemic Heart Disease	30
Depression	26
Chronic Kidney Disease	19
Asthma	7
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	9
Chronic Obstructive Pulmonary Disease	7
Diabetes	20
Dementia	11
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2019 were spinal procedures, pain management, injections and X-rays.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	56
diagnostic procedures	188
doctor visit	1543
injections	498
minimally invasive procedures	72
MRI (magnetic resonance imaging)	118
musculoskeletal imaging	37
nerve block	391
nerve procedures	72
pain management	514
pelvic imaging	66
spinal procedures	854
X-rays	417

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	350
Female	536

**Ethnicity**
Non-Hispanic White	790
Black	0
Hispanic	23
Asian	22
Other	37
Native American	0

**Age**
From 65 to 74	386
From 75 to 84	319
85 and over	132
Less than 65	49

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2019

Hypertension	55
High Cholesterol	54
Stroke	4
Ischemic Heart Disease	28
Depression	26
Chronic Kidney Disease	18
Asthma	7
Osteoperosis	13
Atrial Fibrilation	12
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	17
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2020 were spinal procedures, pain management, injections and X-rays.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	47
diagnostic procedures	163
doctor visit	838
hip imaging	14
injections	366
minimally invasive procedures	72
MRI (magnetic resonance imaging)	111
musculoskeletal imaging	57
nerve block	252
nerve procedures	72
pain management	391
pelvic imaging	55
spinal procedures	589
X-rays	305

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	275
Female	366

**Ethnicity**
Non-Hispanic White	563
Black	18
Hispanic	20
Asian	0
Other	27
Native American	0

**Age**
From 65 to 74	281
From 75 to 84	233
85 and over	84
Less than 65	43

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2020

Hypertension	51
High Cholesterol	52
Stroke	5
Ischemic Heart Disease	29
Depression	22
Chronic Kidney Disease	18
Asthma	8
Osteoperosis	14
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	18
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2021 were spinal procedures, injections, pain management and X-rays.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	55
diagnostic procedures	186
doctor visit	879
injections	421
minimally invasive procedures	31
MRI (magnetic resonance imaging)	108
musculoskeletal imaging	29
nerve block	323
nerve procedures	31
pain management	397
pelvic imaging	74
spinal procedures	723
X-rays	385

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	327
Female	453

**Ethnicity**
Non-Hispanic White	685
Black	0
Hispanic	21
Asian	21
Other	38
Native American	0

**Age**
From 65 to 74	319
From 75 to 84	304
85 and over	114
Less than 65	43

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2021

Hypertension	59
High Cholesterol	61
Stroke	6
Ischemic Heart Disease	28
Depression	25
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	17
Atrial Fibrilation	11
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	18
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA during 2022 were spinal procedures, pain management, injections and nerve block.

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

aspiration	15
diagnostic procedures	224
doctor visit	877
injections	417
minimally invasive procedures	39
MRI (magnetic resonance imaging)	81
musculoskeletal imaging	14
nerve block	383
nerve procedures	39
pain management	441
pelvic imaging	74
spinal procedures	723
X-rays	344

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	350
Female	445

**Ethnicity**
Non-Hispanic White	711
Black	0
Hispanic	28
Asian	0
Other	29
Native American	0

**Age**
From 65 to 74	290
From 75 to 84	355
85 and over	112
Less than 65	38

Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD in 2022

Hypertension	65
High Cholesterol	74
Stroke	9
Ischemic Heart Disease	25
Depression	24
Chronic Kidney Disease	15
Asthma	10
Osteoperosis	22
Atrial Fibrilation	17
Heart Failure	10
Chronic Obstructive Pulmonary Disease	10
Diabetes	16
Dementia	5
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Ernest H. Sponzilli, MD for Medicare patients.

The highest averages for the top procedures that Dr. Ernest H. Sponzilli, MD treated as a spine surgeon in LARKSPUR, CA were spinal procedures, pain management, injections and nerve block.

aspiration	61
diagnostic procedures	224
doctor visit	1244
hip imaging	12
injections	560
minimally invasive procedures	77
MRI (magnetic resonance imaging)	109
musculoskeletal imaging	30
nerve block	473
nerve procedures	74
pain management	573
pelvic imaging	57
removal of internal scar tissue	17
spinal procedures	853
X-rays	335

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Ernest H. Sponzilli, MD.

**Gender**
Male	365
Female	533

**Ethnicity**
Black / African American	3
Asian / Pacific Islander	17
Non-Hispanic White	814
Native American / Alaskan Native	0
Hispanic	21
Other	26

**Age**
75 to 84	321
85 and over	145
Less than 65	54
65 to 74	378

Average of Total of Conditions of Medicare patients treated by Dr. Ernest H. Sponzilli, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Ernest H. Sponzilli, MD treated were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension	51
High Cholesterol	50
Stroke	5
Ischemic Heart Disease	26
Depression	20
Chronic Kidney Disease	14
Asthma	7
Osteoporosis	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	17
Atrial Fibrillation	11
Dementia	7
Cancer	10

Education & Training

Dr. Ernest H. Sponzilli, MD graduated from Albany Medical College. He completed residency at VA Greater Los Angeles Healthcare System. He is certified by the American Board of Physical Medicine and Rehabilitation: Pain Medicine and has a state license in California.

Medical School: Albany Medical College

Residency: VA Greater Los Angeles Healthcare System

Board Certification: American Board of Physical Medicine and Rehabilitation: Pain Medicine

Licensed In: California

Affiliations & Hospitals

Dr. Ernest H. Sponzilli, MD is associated with these hospitals and organizations:

Marin General Hospital

Hill Physicians

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Ernest H. Sponzilli, MD appears to accept the following insurance providers: UnitedHealthcare, Anthem and Western Health Advantage (WHA).

Insurance Accepted by Provider includes:

According to our sources, Dr. Ernest H. Sponzilli, MD accepts the following insurance providers:

UnitedHealthcare

Anthem

Western Health Advantage (WHA)

Ratings & Reviews

Dr. Ernest H. Sponzilli, MD has a high overall rating with an average of 4.43 out of 5 stars based on 7 ratings. We collect ratings and reviews of Dr. Ernest H. Sponzilli, MD from all over the web to help you find the right in LARKSPUR, CA.

4.43

Overall Rating

(7 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-05-16

Patient verified via Press Ganey

Dr. Sponzilli is great! I wish there were more doctors like him.

Overall Rating: 5.0 2025-08-30

Patient verified via Press Ganey

Very confident and supportive. Understanding and caring.

General Payments

These charts describe general payments received by Dr. Ernest H. Sponzilli, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Zimmer Biomet Holdings, Inc.	$71 Mobi-C $71
Stryker Corporation	$44 INTERVENTIONAL SPINE $44
DePuy Synthes Sales Inc.	$42 SYNTHECEL $42
Esaote North America, Inc.	$37 $37
Horizon Pharma plc	$36 VIMOVO $21	Duexis $15
Other	$123 Recon-Upper Extremity Metal $35	IonicRF $23	XTAMPZA $15	RESTORE $14	ZOHYDRO ER $14	Other $24

**Types of Payments**
Food and Beverage	$354

Biography

Dr. Ernest Sponzilli specializes in physiatry (physical medicine & rehabilitation), spine surgery, and orthopedics/orthopedic surgery. Patients rated him highly, giving him an average of 4.5 stars (out of 5). Dr. Sponzilli is an in-network provider for Anthem, UnitedHealthcare, and Blue California insurance. He attended medical school at Albany Medical College. Dr. Sponzilli completed his residency training at VA Greater Los Angeles Healthcare System and a hospital affiliated with the University of California, Los Angeles (UCLA). He has received the following distinctions: San Francisco Magazine Top Doc; Top Doctor Marin Magazine; and [415] Top Doctor. His professional affiliations include Marin General Hospital and Hill Physicians. His practice in Larkspur, CA is open to new patients as reported by Hill Physicians.