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Dr. Nischita Merla, MD, MPH

(10 Ratings)

Specializes in: Adult Gastroenterology

1330 San Bernardino Road Suite L
Upland, CA 91786

(909) 833-7556

Dr. Nischita Merla, MD, MPH is a gastroenterologist in Upland, CA specializing in adult gastroenterology. Dr. Nischita Merla, MD, MPH is affiliated with Pomona Valley Hospital Medical Center.

Office Locations

1330 San Bernardino Road Suite L
Upland, CA 91786

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1866 N Orange Grove Avenue Suite 104 Pomona Ca
Pomona, CA 91767

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790 E Bonita Avenue #2
Pomona, CA 91767

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Noteworthy Medicare Patient Procedures Performed by Dr. Nischita Merla, MD, MPH in 2024

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

Top 25%

By Volume:

inpatient hospital care

By Affordability:

colonoscopy with biopsy

colonoscopy with lesion removal

colorectal cancer screening

diagnostic colonoscopy

diagnostic colonoscopy without biopsy

diagnostic procedures

gastrointestinal biopsy

percutaneous procedures

preventive care

removal of lesion

screening colonoscopy

screening test

therapeutic colonoscopy

therapeutic endoscopy

In 2012, among providers in related specialties within California, Dr. Nischita Merla, MD, MPH performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of them and she also had a list price for biopsy, cancer prevention, cancer screening, colon biopsy, colonoscopy with biopsy, colonoscopy with lesion removal, colorectal cancer screening, diagnostic colonoscopy, diagnostic colonoscopy without biopsy, diagnostic procedures, gastrointestinal biopsy, percutaneous procedures, preventive care, removal of lesion (e.g. growth), screening colonoscopy, screening test, therapeutic colonoscopy, and therapeutic endoscopy 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. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2012 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

anastomosis	34
catheterization	34
diagnostic procedures	119
doctor visit	74
gastrointestinal procedures	216
hospital care	1163
inpatient care	1163
minimally invasive procedures	216
preventive care	29
removal of lesion (e.g. growth)	119

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2013 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

diagnostic procedures	126
doctor visit	195
gastrointestinal procedures	142
hospital care	345
inpatient care	345
minimally invasive procedures	142
preventive care	16
removal of lesion (e.g. growth)	126

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	77
Female	143

**Ethnicity**
Non-Hispanic White	105
Black	20
Hispanic	68
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	83
From 75 to 84	60
85 and over	40
Less than 65	37

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2013

Hypertension	75
High Cholesterol	62
Stroke	14
Ischemic Heart Disease	50
Depression	26
Chronic Kidney Disease	45
Asthma	8
Osteoperosis	11
Atrial Fibrilation	18
Heart Failure	50
Chronic Obstructive Pulmonary Disease	27
Diabetes	49
Dementia	25
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2014 were inpatient care, hospital care, gastrointestinal procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

anastomosis	15
aspiration	12
catheterization	15
diagnostic procedures	144
doctor visit	254
gastrointestinal procedures	193
hospital care	291
image guided procedures	12
inpatient care	291
minimally invasive procedures	193
minor procedures	12
preventive care	16
removal of lesion (e.g. growth)	144
ultrasound (sonogram)	12

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	104
Female	188

**Ethnicity**
Non-Hispanic White	137
Black	40
Hispanic	86
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	73
85 and over	45
Less than 65	53

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2014

Hypertension	75
High Cholesterol	52
Stroke	12
Ischemic Heart Disease	45
Depression	28
Chronic Kidney Disease	42
Asthma	10
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	38
Chronic Obstructive Pulmonary Disease	23
Diabetes	47
Dementia	20
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2015 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

diagnostic procedures	158
doctor visit	330
gastrointestinal procedures	204
hospital care	200
inpatient care	200
minimally invasive procedures	204
preventive care	31
removal of lesion (e.g. growth)	158

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	230
Female	452

**Ethnicity**
Non-Hispanic White	314
Black	64
Hispanic	208
Asian	74
Other	22
Native American	0

**Age**
From 65 to 74	308
From 75 to 84	172
85 and over	76
Less than 65	126

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2015

Hypertension	71
High Cholesterol	55
Stroke	9
Ischemic Heart Disease	38
Depression	22
Chronic Kidney Disease	38
Asthma	16
Osteoperosis	15
Atrial Fibrilation	9
Heart Failure	29
Chronic Obstructive Pulmonary Disease	21
Diabetes	46
Dementia	18
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2016 were gastrointestinal procedures, minimally invasive procedures, diagnostic procedures and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

anastomosis	11
aspiration	13
catheterization	11
diagnostic procedures	245
doctor visit	371
gastrointestinal procedures	305
hospital care	202
image guided procedures	13
inpatient care	202
minimally invasive procedures	305
minor procedures	13
preventive care	19
removal of lesion (e.g. growth)	245
ultrasound (sonogram)	26

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	115
Female	242

**Ethnicity**
Non-Hispanic White	152
Black	0
Hispanic	129
Asian	39
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	90
85 and over	45
Less than 65	66

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2016

Hypertension	75
High Cholesterol	59
Stroke	13
Ischemic Heart Disease	42
Depression	26
Chronic Kidney Disease	45
Asthma	25
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	39
Chronic Obstructive Pulmonary Disease	21
Diabetes	45
Dementia	18
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2017 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

aspiration	13
diagnostic procedures	175
doctor visit	401
gastrointestinal procedures	211
hospital care	97
image guided procedures	13
inpatient care	97
minimally invasive procedures	211
minor procedures	13
preventive care	23
removal of lesion (e.g. growth)	175
ultrasound (sonogram)	13

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	97
Female	201

**Ethnicity**
Non-Hispanic White	149
Black	24
Hispanic	85
Asian	28
Other	12
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	82
85 and over	34
Less than 65	49

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2017

Hypertension	75
High Cholesterol	50
Stroke	8
Ischemic Heart Disease	41
Depression	26
Chronic Kidney Disease	42
Asthma	11
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	33
Chronic Obstructive Pulmonary Disease	21
Diabetes	47
Dementia	16
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2018 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

aspiration	11
diagnostic procedures	192
doctor visit	393
gastrointestinal procedures	233
hospital care	84
image guided procedures	11
inpatient care	84
minimally invasive procedures	233
minor procedures	11
preventive care	26
removal of lesion (e.g. growth)	192
ultrasound (sonogram)	11

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	90
Female	206

**Ethnicity**
Non-Hispanic White	144
Black	31
Hispanic	82
Asian	28
Other	0
Native American	0

**Age**
From 65 to 74	140
From 75 to 84	84
85 and over	35
Less than 65	37

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2018

Hypertension	75
High Cholesterol	67
Stroke	8
Ischemic Heart Disease	40
Depression	26
Chronic Kidney Disease	43
Asthma	10
Osteoperosis	18
Atrial Fibrilation	14
Heart Failure	32
Chronic Obstructive Pulmonary Disease	16
Diabetes	46
Dementia	14
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2019 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

aspiration	13
diagnostic procedures	269
doctor visit	447
gastrointestinal procedures	339
hospital care	194
image guided procedures	13
inpatient care	194
minimally invasive procedures	339
minor procedures	13
preventive care	35
removal of lesion (e.g. growth)	269
ultrasound (sonogram)	13

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	139
Female	273

**Ethnicity**
Non-Hispanic White	218
Black	33
Hispanic	101
Asian	44
Other	16
Native American	0

**Age**
From 65 to 74	190
From 75 to 84	0
85 and over	55
Less than 65	55

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2019

Hypertension	75
High Cholesterol	65
Stroke	10
Ischemic Heart Disease	41
Depression	22
Chronic Kidney Disease	44
Asthma	9
Osteoperosis	13
Atrial Fibrilation	15
Heart Failure	36
Chronic Obstructive Pulmonary Disease	16
Diabetes	45
Dementia	17
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2020 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

diagnostic procedures	159
doctor visit	395
gastrointestinal procedures	218
hospital care	180
inpatient care	180
minimally invasive procedures	218
preventive care	28
removal of lesion (e.g. growth)	159

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	121
Female	231

**Ethnicity**
Non-Hispanic White	189
Black	30
Hispanic	87
Asian	32
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	105
85 and over	43
Less than 65	48

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2020

Hypertension	75
High Cholesterol	59
Stroke	7
Ischemic Heart Disease	43
Depression	27
Chronic Kidney Disease	48
Asthma	7
Osteoperosis	14
Atrial Fibrilation	15
Heart Failure	38
Chronic Obstructive Pulmonary Disease	17
Diabetes	44
Dementia	20
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2021 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

anastomosis	16
catheterization	16
diagnostic procedures	201
doctor visit	582
gastrointestinal procedures	265
hospital care	230
inpatient care	230
minimally invasive procedures	265
preventive care	30
removal of lesion (e.g. growth)	201

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	128
Female	253

**Ethnicity**
Non-Hispanic White	219
Black	25
Hispanic	96
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	154
From 75 to 84	137
85 and over	54
Less than 65	36

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2021

Hypertension	75
High Cholesterol	69
Stroke	9
Ischemic Heart Disease	37
Depression	26
Chronic Kidney Disease	45
Asthma	10
Osteoperosis	17
Atrial Fibrilation	15
Heart Failure	34
Chronic Obstructive Pulmonary Disease	17
Diabetes	44
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2022 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

diagnostic procedures	220
doctor visit	543
gastrointestinal procedures	283
hospital care	277
inpatient care	277
minimally invasive procedures	283
preventive care	31
removal of lesion (e.g. growth)	220

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	130
Female	272

**Ethnicity**
Non-Hispanic White	192
Black	33
Hispanic	110
Asian	53
Other	14
Native American	0

**Age**
From 65 to 74	181
From 75 to 84	127
85 and over	52
Less than 65	42

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2022

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	29
Depression	30
Chronic Kidney Disease	32
Asthma	12
Osteoperosis	20
Atrial Fibrilation	23
Heart Failure	30
Chronic Obstructive Pulmonary Disease	19
Diabetes	45
Dementia	13
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2023 were gastrointestinal procedures, minimally invasive procedures, inpatient care and hospital care.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

anastomosis	16
aspiration	12
catheterization	16
diagnostic procedures	236
doctor visit	573
gastrointestinal procedures	324
hospital care	245
image guided procedures	12
inpatient care	245
minimally invasive procedures	324
minor procedures	12
preventive care	40
removal of lesion (e.g. growth)	236
ultrasound (sonogram)	12

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	138
Female	306

**Ethnicity**
Non-Hispanic White	225
Black	33
Hispanic	114
Asian	48
Other	0
Native American	0

**Age**
From 65 to 74	209
From 75 to 84	144
85 and over	40
Less than 65	51

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2023

Hypertension	75
High Cholesterol	75
Stroke	18
Ischemic Heart Disease	24
Depression	26
Chronic Kidney Disease	30
Asthma	15
Osteoperosis	21
Atrial Fibrilation	20
Heart Failure	29
Chronic Obstructive Pulmonary Disease	17
Diabetes	46
Dementia	12
Cancer	17

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA during 2024 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

anastomosis	22
catheterization	22
diagnostic procedures	224
doctor visit	561
gastrointestinal procedures	334
hospital care	355
injections	13
inpatient care	355
minimally invasive procedures	334
preventive care	36
removal of lesion (e.g. growth)	224

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Male	189
Female	298

**Ethnicity**
Non-Hispanic White	237
Black	39
Hispanic	130
Asian	61
Other	20
Native American	0

**Age**
From 65 to 74	225
From 75 to 84	152
85 and over	61
Less than 65	49

Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH in 2024

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	33
Depression	29
Chronic Kidney Disease	36
Asthma	14
Osteoperosis	18
Atrial Fibrilation	21
Heart Failure	33
Chronic Obstructive Pulmonary Disease	21
Diabetes	46
Dementia	17
Cancer	22

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Nischita Merla, MD, MPH for Medicare patients.

The highest averages for the top procedures that Dr. Nischita Merla, MD, MPH treated as a gastroenterologist in Upland, CA were inpatient care, hospital care, gastrointestinal procedures and minimally invasive procedures.

anastomosis	19
aspiration	12
catheterization	19
diagnostic procedures	189
doctor visit	393
gastrointestinal procedures	251
hospital care	297
image guided procedures	12
injections	13
inpatient care	297
minimally invasive procedures	251
minor procedures	12
preventive care	27
removal of lesion (e.g. growth)	189
ultrasound (sonogram)	14

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Nischita Merla, MD, MPH.

**Gender**
Female	235
Male	119

**Ethnicity**
Black / African American	28
Asian / Pacific Islander	33
Non-Hispanic White	175
Hispanic	99
Native American / Alaskan Native	0
Other	6

**Age**
85 and over	44
75 to 84	94
Less than 65	49
65 to 74	158

Average of Total of Conditions of Medicare patients treated by Dr. Nischita Merla, MD, MPH From 2012 - 2024

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

Hypertension	68
High Cholesterol	58
Stroke	11
Ischemic Heart Disease	35
Depression	24
Chronic Kidney Disease	37
Asthma	11
Osteoporosis	14
Heart Failure	32
Chronic Obstructive Pulmonary Disease	18
Diabetes	42
Atrial Fibrillation	14
Dementia	16
Cancer	12

Education & Training

She has a state license in Texas.

Licensed In: Texas

Ratings & Reviews

Dr. Nischita Merla, MD, MPH has an average of 2.2 out of 5 stars based on 10 ratings. We collect ratings and reviews of Dr. Nischita Merla, MD, MPH from all over the web to help you find the right in Upland, CA.

2.2

Overall Rating

(10 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$749 XIFAXAN $471	Trulance $249	PLENVU $21	Relistor $8
Ardelyx, Inc.	$705 IBSRELA $705
Madrigal Pharmaceuticals	$667 REZDIFFRA $643	RESMETIROM $24
Salix Pharmaceuticals, Ltd	$534 Solesta $534
Smith+Nephew, Inc.	$392 CANNULATED SCREWS $392
Other	$3,148 ZENPEP $367	DUPIXENT $315	STELARA $259	VOQUEZNA $205	Ocaliva $195	Other $1,807

**Types of Payments**
Food and Beverage	$5,478
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$392
Travel and Lodging	$321
Education	$4

Biography

Dr. Nischita Merla is an adult gastroenterology specialist in Upland, CA. Patient ratings for Dr. Merla average 2.0 stars (out of 5). She is affiliated with Pomona Valley Hospital Medical Center. Dr. Merla (or staff) speaks the following foreign languages: Spanish and Hindi.