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Home > CA Providers > Internists & Internal Medicine Doctors

Dr. Anthony Thong Phan, MD

(10 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

1189 Swallow Lane Suite 110
Simi Valley, CA 93065

(805) 526-3213

Dr. Anthony Thong Phan, MD is an internist in Simi Valley, CA specializing in internal medicine (adult medicine).

Office Locations

1189 Swallow Lane Suite 110
Simi Valley, CA 93065

(805) 526-3213

(805) 583-5929

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2925 Sycamore Drive Suite 304 Simi Valley Ca
Simi Valley, CA 93065

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Noteworthy Medicare Patient Procedures Performed by Dr. Anthony Thong Phan, MD in 2024

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

Top 5%

By Affordability:

coagulation tests

prothrombin time test

In 2024, Dr. Anthony Thong Phan, MD had a list price for coagulation (blood clotting) tests, and prothrombin time (PT) test 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.

Top 10%

By Affordability:

blood tests

liver function tests

In 2024, Dr. Anthony Thong Phan, MD had a list price for blood tests, and liver function tests (LFTs) that was lower than the list prices billed to Medicare by 90% 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.

Top 25%

By Volume:

lab tests

prothrombin time test

By Affordability:

lab tests

In 2012, among providers in related specialties within California, Dr. Anthony Thong Phan, MD performed more lab tests, and prothrombin time (PT) test procedures for Medicare patients than 75% of them and he also had a list price for lab tests 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. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2012 were blood draw, hormone therapy, injections and lab tests.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	386
diabetes management	32
doctor visit	1910
hormone therapy	372
injections	372
lab tests	249
preventive care	90
rehabilitation	174
vaccines	37

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2013 were blood draw, lab tests, preventive care and rehabilitation.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	338
doctor visit	1314
lab tests	243
preventive care	127
rehabilitation	102
vaccines	19

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	76
Female	95

**Ethnicity**
Non-Hispanic White	125
Black	0
Hispanic	0
Asian	23
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	60
85 and over	30
Less than 65	13

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	32
Depression	22
Chronic Kidney Disease	23
Asthma	0
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	8
Diabetes	35
Dementia	16
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2014 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	290
doctor visit	1340
lab tests	229
preventive care	88
vaccines	11

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	65
Female	90

**Ethnicity**
Non-Hispanic White	107
Black	0
Hispanic	23
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	66
From 75 to 84	53
85 and over	24
Less than 65	12

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	32
Depression	21
Chronic Kidney Disease	23
Asthma	0
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	33
Dementia	15
Cancer	18

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2015 were blood draw, lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	290
diabetes management	47
doctor visit	1263
lab tests	260
preventive care	77

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	126
Female	164

**Ethnicity**
Non-Hispanic White	196
Black	0
Hispanic	46
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	122
From 75 to 84	94
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2015

Hypertension	73
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	30
Depression	26
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	0
Diabetes	35
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2016 were blood draw, lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	299
diabetes management	23
doctor visit	1115
lab tests	205
preventive care	23

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	63
Female	81

**Ethnicity**
Non-Hispanic White	99
Black	0
Hispanic	0
Asian	22
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	41
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	22
Depression	23
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	10
Chronic Obstructive Pulmonary Disease	0
Diabetes	33
Dementia	11
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2017 were blood draw and lab tests.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	272
doctor visit	1153
lab tests	223

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	59
Female	77

**Ethnicity**
Non-Hispanic White	94
Black	0
Hispanic	19
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	62
From 75 to 84	43
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2017

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	25
Depression	41
Chronic Kidney Disease	40
Asthma	0
Osteoperosis	13
Atrial Fibrilation	13
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	35
Dementia	14
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2018 were blood draw and lab tests.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	266
doctor visit	1122
lab tests	246

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	62
Female	76

**Ethnicity**
Non-Hispanic White	103
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	45
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	24
Depression	33
Chronic Kidney Disease	40
Asthma	0
Osteoperosis	0
Atrial Fibrilation	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	0
Diabetes	38
Dementia	9
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2019 were blood draw and lab tests.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	280
doctor visit	1363
lab tests	225

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	62
Female	89

**Ethnicity**
Non-Hispanic White	114
Black	0
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	76
From 75 to 84	46
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	28
Depression	34
Chronic Kidney Disease	40
Asthma	7
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	20
Chronic Obstructive Pulmonary Disease	0
Diabetes	38
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2020 were blood draw and lab tests.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	285
doctor visit	1416
lab tests	41

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	69
Female	87

**Ethnicity**
Non-Hispanic White	122
Black	0
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	77
From 75 to 84	51
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	21
Depression	27
Chronic Kidney Disease	40
Asthma	0
Osteoperosis	0
Atrial Fibrilation	13
Heart Failure	21
Chronic Obstructive Pulmonary Disease	0
Diabetes	56
Dementia	14
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2021 were blood draw and lab tests.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	337
doctor visit	1395
lab tests	29

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	71
Female	90

**Ethnicity**
Non-Hispanic White	130
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	91
From 75 to 84	54
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	16
Depression	22
Chronic Kidney Disease	33
Asthma	0
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	14
Chronic Obstructive Pulmonary Disease	0
Diabetes	63
Dementia	8
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2022 were blood draw and lab tests.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	320
doctor visit	1710
lab tests	207

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	73
Female	100

**Ethnicity**
Non-Hispanic White	143
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	64
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	11
Depression	16
Chronic Kidney Disease	17
Asthma	8
Osteoperosis	7
Atrial Fibrilation	28
Heart Failure	7
Chronic Obstructive Pulmonary Disease	9
Diabetes	59
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2023 were blood draw and lab tests.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	122
doctor visit	1418
lab tests	14

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	67
Female	91

**Ethnicity**
Non-Hispanic White	128
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	14
Depression	18
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	11
Atrial Fibrilation	27
Heart Failure	9
Chronic Obstructive Pulmonary Disease	9
Diabetes	53
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA during 2024 were blood draw and lab tests.

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

blood draw	140
doctor visit	1517
lab tests	125

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Male	65
Female	82

**Ethnicity**
Non-Hispanic White	126
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	72
From 75 to 84	59
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	16
Depression	18
Chronic Kidney Disease	19
Asthma	0
Osteoperosis	10
Atrial Fibrilation	26
Heart Failure	13
Chronic Obstructive Pulmonary Disease	0
Diabetes	61
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Anthony Thong Phan, MD for Medicare patients.

The highest averages for the top procedures that Dr. Anthony Thong Phan, MD treated as an internist in Simi Valley, CA were hormone therapy, injections, blood draw and lab tests.

blood draw	278
diabetes management	34
doctor visit	1387
hormone therapy	372
injections	372
lab tests	176
preventive care	81
rehabilitation	138
vaccines	22

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Anthony Thong Phan, MD.

**Gender**
Female	86
Male	66

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	3
Non-Hispanic White	114
Hispanic	14
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	4
75 to 84	51
Less than 65	1
65 to 74	72

Average of Total of Conditions of Medicare patients treated by Dr. Anthony Thong Phan, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Anthony Thong Phan, MD treated were high cholesterol, hypertension, diabetes and chronic kidney disease.

Hypertension	69
High Cholesterol	69
Stroke	1
Ischemic Heart Disease	20
Depression	23
Chronic Kidney Disease	27
Asthma	1
Osteoporosis	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	3
Diabetes	41
Atrial Fibrillation	14
Cancer	10
Dementia	9

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

Dr. Anthony Thong Phan, MD has a high overall rating with an average of 3.6 out of 5 stars based on 10 ratings. We collect ratings and reviews of Dr. Anthony Thong Phan, MD from all over the web to help you find the right in Simi Valley, CA.

3.6

Overall Rating

(10 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$129 BRILINTA $92	BYDUREON WEEKLY $14	FARXIGA $13	BYDUREON PEN $11
Daiichi Sankyo Inc.	$72 Welchol $31	Benicar $30	MOVANTIK $11
Novo Nordisk Inc	$42 Victoza $25	Levemir $18
Janssen Pharmaceuticals, Inc	$22 XARELTO $22
Novocure Inc.	$19 Oncology $19
Other	$55 BELSOMRA $17	LEVITRA $14	GENERAL THERAPIES $14	Vascepa $10