In 2023, Dr. Robert Spencer Christensen, OD had a list price for eye tests, fundus photography, scanning computerized ophthalmic diagnostic imaging (SCODI), and SCODI of the posterior segment (SCODI-P) that was lower than the list prices billed to Medicare by 95% of providers in related specialties within California. 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

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

doctor visit	104

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

doctor visit	95

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	47
Female	63

**Age**
From 65 to 74	62
From 75 to 84	36
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2013

Hypertension	32
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	17
Depression	11
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	12
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	10
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA during 2014 were eye procedures.

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

doctor visit	30
eye procedures	87

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	52
Female	58

**Age**
From 65 to 74	73
From 75 to 84	26
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2014

Hypertension	33
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	20
Depression	11
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	12
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA during 2015 were eye procedures.

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

doctor visit	33
eye procedures	75

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	102
Female	120

**Age**
From 65 to 74	110
From 75 to 84	78
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2015

Hypertension	35
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	23
Depression	13
Chronic Kidney Disease	11
Asthma	0
Osteoperosis	0
Atrial Fibrilation	12
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA during 2016 were eye procedures.

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

doctor visit	28
eye procedures	94

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	52
Female	59

**Age**
From 65 to 74	66
From 75 to 84	29
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2016

Hypertension	32
High Cholesterol	35
Stroke	0
Ischemic Heart Disease	17
Depression	10
Chronic Kidney Disease	10
Asthma	0
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	11
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA during 2017 were eye procedures.

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

doctor visit	14
eye procedures	168

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	44
Female	63

**Age**
From 65 to 74	61
From 75 to 84	31
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2017

Hypertension	30
High Cholesterol	32
Stroke	0
Ischemic Heart Disease	14
Depression	0
Chronic Kidney Disease	10
Asthma	0
Osteoperosis	11
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA during 2018 were eye procedures.

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

doctor visit	12
eye procedures	174

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	45
Female	58

**Age**
From 65 to 74	49
From 75 to 84	37
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2018

Hypertension	27
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	27
Depression	11
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	14
Atrial Fibrilation	12
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA during 2019 were eye procedures.

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

eye procedures	62

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	17
Female	21

**Age**
From 65 to 74	21
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2019

Hypertension	47
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA during 2020 were eye procedures.

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

doctor visit	13
eye procedures	99

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	25
Female	40

**Age**
From 65 to 74	30
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2020

Hypertension	29
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	17
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA during 2021 were eye procedures.

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

doctor visit	46
eye procedures	209

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	42
Female	61

**Ethnicity**
Non-Hispanic White	89
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	60
From 75 to 84	31
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2021

Hypertension	37
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	17
Depression	11
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA during 2022 were eye procedures.

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

eye procedures	309

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	40
Female	72

**Ethnicity**
Non-Hispanic White	101
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	51
From 75 to 84	48
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2022

Hypertension	51
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	15
Depression	12
Chronic Kidney Disease	10
Asthma	0
Osteoperosis	25
Atrial Fibrilation	13
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	12
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Robert Spencer Christensen, OD for Medicare patients.

The highest averages for the top procedures that Dr. Robert Spencer Christensen, OD treated as an optometrist in Mill Valley, CA were eye procedures.

doctor visit	41
eye procedures	141

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Robert Spencer Christensen, OD.

**Gender**
Male	42
Female	55

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

**Age**
75 to 84	28
85 and over	0
Less than 65	0
65 to 74	53

Average of Total of Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Robert Spencer Christensen, OD treated were high cholesterol, hypertension, ischemic heart disease and cancer.

Hypertension	32
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	13
Depression	7
Chronic Kidney Disease	3
Asthma	0
Osteoporosis	7
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	4
Atrial Fibrillation	6
Dementia	0
Cancer	9

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Robert Spencer Christensen, OD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Alcon Laboratories Inc	$200 $200
Coopervision Inc.	$155 CVI Contact Lens $72	MiSight Contact Lens $53	Clariti Contact Lens $30
Optos, Inc.	$80 P200TxE $62	California $18
ABB Con-Cise Optical Group LLC	$74 Contact Lens $74
MacuLogix, Inc.	$64 AdaptDx $64
Other	$171 Acuvue $40	TOTAL30 $28	BTOD $27	AmnioGuard $22	BIOTRUE ONE DAY $19	Other $35

**Types of Payments**
Food and Beverage	$481
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$200
Entertainment	$62

Biography

Dr. Robert Christensen works as an optometry (primary eye care) specialist in Mill Valley, CA. Dr. Christensen obtained a license to practice in California.

Select Year:

Dr. Robert Spencer Christensen, OD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Robert Spencer Christensen, OD in 2023

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Robert Spencer Christensen, OD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

Optometrists in Nearby Locations

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