Dr. Hemnishil Kumar Marella, DO

  • Pleasanton, CA
  • Gastroenterologist
NPI1760915771PAC ID5294118998
Medicare services, 2024
116
Medicare patients, 2024
99
Part D claims, 2024
81
Publications
20
Hospital affiliations
2
Practice address
5565 W Las Positas Blvd, Pleasanton, CA 94588
Professional email
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Mobile number
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Primary practice

Stanford Care Digestive Health Center of Pleasanton - HOPD

Acute Care Hospital outpatient department · Pleasanton, California

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Dr. Hemnishil Kumar Marella is a gastroenterologist in Pleasanton, California

Dr. Marella practices at Stanford Care Digestive Health Center of Pleasanton - HOPD in Pleasanton, California.

Dr. Marella's NPI, 1760915771, was assigned on April 6, 2017. Dr. Marella graduated from Lincoln Memorial University-DeBusk College of Osteopathic Medicine in 2017. Dr. Marella holds California license 20A22252.

NPI and contact details
Medicare PAC ID
5294118998
NPI enumeration date
April 6, 2017
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
35
Medical school graduation
2017

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Hemnishil Kumar Marella practices at Stanford Care Digestive Health Center of Pleasanton - HOPD in Pleasanton, California

Dr. Marella's primary practice is Stanford Care Digestive Health Center of Pleasanton - HOPD, at 5565 W Las Positas Blvd, Pleasanton, CA 94588.

  • Stanford Care Digestive Health Center of Pleasanton - HOPD
    5565 W Las Positas Blvd, Pleasanton, CA 94588

Source: Dmand AI Affiliation Data

Dr. Hemnishil Kumar Marella is affiliated with 5 sites of care and 3 medical groups

Dr. Marella's primary practice is Stanford Care Digestive Health Center of Pleasanton - HOPD in Pleasanton, California. Dr. Marella is also affiliated with Stanford Health Care Tri-Valley. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Marella to 1 more hospital, 2 group practices and clinics and 2 medical groups, each named with a free account.

See all 8 affiliations for Dr. Marella

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Hemnishil Kumar Marella's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marella practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Stanford Care Digestive Health Center of Pleasanton - HOPDAvailable with a free account
+4 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Hemnishil Kumar Marella is one of 1,977 gastroenterologists in California

Gastroenterology is Dr. Marella's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Marella is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Marella's licenses on file in 2 states: California and Tennessee.

Specialties and state licenses

  • Gastroenterology, CaliforniaPrimaryLicense 20A22252 · taxonomy 207RG0100X
  • Tennessee licenseLicense 0000004580

Clinical focus

Dmand AI lists circulation problems, gastrointestinal bleeding, sepsis and urinary tract infection among the conditions Dr. Marella treats.

Gastroenterologists near Dr. Marella

Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Hemnishil Kumar Marella billed Medicare for 116 services in 2024

CMS data shows 116 Medicare services from Dr. Marella across 5 procedure codes in 2024, for 99 Medicare patients. Medicare paid $14,300 for them.

Medicare services, 2024116
Medicare patients99
Paid by Medicare$14,300
Procedure codes5

Dr. Marella's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1312024: 9924%
Surgery
2023: 02024: 17

Where Dr. Marella's Medicare services took place, 2024

  • In an office9985%
  • In a facility1715%

Dr. Marella compared with the California median for gastroenterologists, 2024

  • Dr. Marella
  • California median
Medicare services
116vs 58680% below
Medicare patients
99vs 30267% below
Part D claims
51vs 38087% below

Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.

Dr. Marella's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Hemnishil Kumar Marella treated 99 Medicare patients in 2024, average age 72

CMS counts 99 Medicare patients who saw Dr. Marella in 2024. The largest group is 65 to 74, with 42 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 30% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Marella's median patient age at 57, with 53% women.

Medicare patients, 202499
Average age72
Average risk score1.16
Also on Medicaid30%

Dr. Marella's Medicare patients by age, 2024

Dr. Marella's Medicare patients by sex, 2024

  • Women6061%
  • Men3939%

Chronic conditions among Dr. Marella's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure71%
  3. Arthritis41%
  4. Osteoporosis30%
  5. Diabetes28%
  6. Anxiety24%
  7. Mood disorders23%
  8. Depression22%

Share of Medicare patients with each condition. A patient can have several.

Dr. Marella's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 57

Patient panel by sex, all payers

  • Women53%
  • Men45%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Hemnishil Kumar Marella wrote 81 Medicare Part D claims in 2024

In 2024, Dr. Marella wrote 81 Medicare Part D claims for 67 patients. 84% of them were for generic drugs. CMS names the drug for 51 of them, across 2 drugs with 11 or more claims each, at $2,632 in total drug cost. In 2022, CMS named 13 claims across 1 drug.

Part D claims, 202481
Drugs named by CMS2
Total drug cost$2,632
Part D patients67

Dr. Marella's Part D claims by kind of drug, 2024

  • Generic68 claims84%
  • Brand-name13 claims16%

Dr. Marella's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2022 to 2024

  • 2022
  • 2024
Claims for drugs CMS names
2022: 132024: 51292%

Drugs named by CMS: 2 in 2024, 1 in 2022.

See all prescribing by Dr. Marella

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Hemnishil Kumar Marella ranks in the 90th percentile for colonoscopy in Medicare

Dr. Marella accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Marella as offering telehealth. CMS counts 164 procedures of colonoscopy by Dr. Marella, more than 90% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Where Dr. Marella ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
88th percentile178 procedures
Colonoscopy
90th percentile164 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Hemnishil Kumar Marella has 20 publications on record

Dmand AI links 20 papers to Dr. Marella, published from 2019 to 2021. 2020 was the busiest year, with 9. The most frequent topics are Alanine Transaminase, Biopsy and Black or African American. Dr. Marella has published most often in Clin Exp Hepatol. Dr. Marella's most frequent co-authors are Claudio R. Tombazzi, MD, Benedict Joseph Maliakkal, MD and Satheesh Padmanabhan Nair, MD.

Papers20
Years published2019 to 2021

Dr. Marella's papers by year, 2019 to 2021

Topics Dr. Marella writes about most

  • Alanine Transaminase
  • Biopsy
  • Black or African American
  • Liver
  • Liver Cirrhosis
  • Non-alcoholic Fatty Liver Disease
  • White People

Dr. Marella's most frequent co-authors

Recent publications by Dr. Marella

See all 20 publications and co-authors

See who Dr. Marella researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Marella works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Hemnishil Kumar Marella received $1,011 in industry payments from 2021 to 2024

CMS Open Payments shows 10 general payments to Dr. Marella from 4 drug and device companies from 2021 to 2024. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $570.

General payments to Dr. Marella by program year, 2021 to 2024

Companies that paid Dr. Marella the most, 2021 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Marella

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Hemnishil Kumar Marella graduated from Lincoln Memorial University-DeBusk College of Osteopathic Medicine

Dr. Marella graduated from Lincoln Memorial University-DeBusk College of Osteopathic Medicine in 2017.

  1. Medical schoolLincoln Memorial University-DeBusk College of Osteopathic Medicine
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine
  4. Board certified in 2023 - 2025CA State License
  5. Board certified in 2021 - 2026TN State License

Source: Dmand AI Professional Profile Data

Dr. Hemnishil Kumar Marella accepts plans from 6 insurance carriers

Dr. Marella is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • AR State Medicaid
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare

Plan types Dr. Marella accepts, by number of carriers

  1. HMO3
  2. POS3
  3. EPO2
  4. Medicare2
  5. PPO2
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Hemnishil Kumar Marella's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Hemnishil Kumar Marella

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Hemnishil Kumar Marella's NPI number?

Dr. Hemnishil Kumar Marella's NPI number is 1760915771. It was assigned on April 6, 2017, and it is active in the NPI Registry.

What kind of doctor is Dr. Hemnishil Kumar Marella?

Dr. Hemnishil Kumar Marella is a gastroenterologist in Pleasanton, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Hemnishil Kumar Marella practice?

Dr. Marella practices at 5565 W Las Positas Blvd, Pleasanton, CA 94588. Dr. Marella's primary practice is Stanford Care Digestive Health Center of Pleasanton - HOPD in Pleasanton, California. Dmand AI also links Dr. Marella to 1 hospital, 2 group practices and clinics and 2 medical groups.

What is Dr. Hemnishil Kumar Marella's medical license number?

Dr. Marella holds California license 20A22252, one of the licenses on file in 2 states.

Which states has Dr. Hemnishil Kumar Marella been licensed in?

Dmand AI has state licenses on file for Dr. Marella in California and Tennessee.

Which hospitals is Dr. Hemnishil Kumar Marella affiliated with?

Dr. Marella is affiliated with Stanford Health Care Tri-Valley. Dmand AI links Dr. Marella to 1 more hospital.

What medical group is Dr. Hemnishil Kumar Marella part of?

Dr. Marella is linked to Stanford Health Care. Dmand AI links Dr. Marella to 2 more medical groups.

Does Dr. Hemnishil Kumar Marella accept Medicare?

Yes. CMS data shows Dr. Marella billed Medicare for 116 services in 2024, and Dr. Marella accepts Medicare assignment.

Does Dr. Hemnishil Kumar Marella offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Marella as offering telehealth services.

How many Medicare patients does Dr. Hemnishil Kumar Marella see?

CMS counts 99 Medicare patients who saw Dr. Marella in 2024, with an average age of 72.

Show 9 more questionsShow fewer questions

Is Dr. Hemnishil Kumar Marella board certified?

Yes. Dr. Marella is board certified in gastroenterology by the American Board of Internal Medicine.

What services does Dr. Hemnishil Kumar Marella bill to Medicare?

In 2024, Dr. Marella's most billed Medicare services were office visit, new patient (99204), office visit, established patient (99214) and surgery: digestive system (43239).

Where did Dr. Hemnishil Kumar Marella go to medical school?

Dr. Marella graduated from Lincoln Memorial University-DeBusk College of Osteopathic Medicine in 2017.

What drugs does Dr. Hemnishil Kumar Marella prescribe most?

In 2024 Medicare Part D data, Dr. Marella's most prescribed drugs by claims were Sod Sulf-Potass Sulf-Mag Sulf and Pantoprazole Sodium.

Has Dr. Hemnishil Kumar Marella received payments from drug or device companies?

CMS Open Payments shows $1,011 in general payments to Dr. Marella from 4 companies from 2021 to 2024. The largest total came from Abbvie Inc.

How long has Dr. Hemnishil Kumar Marella been practicing?

Dr. Marella graduated from medical school in 2017, 9 years ago.

Does Dr. Hemnishil Kumar Marella do research?

Dmand AI links 20 publications to Dr. Marella, published from 2019 to 2021.

Who does Dr. Hemnishil Kumar Marella publish with?

Dr. Marella's most frequent co-authors are Claudio R. Tombazzi, MD (6 shared papers), Benedict Joseph Maliakkal, MD (5 shared papers) and Satheesh Padmanabhan Nair, MD (5 shared papers).

What insurance does Dr. Hemnishil Kumar Marella accept?

Dr. Marella is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.

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