Dr. Ellora Natu Karmarkar, MD

  • Stanford, CA
  • Infectious disease specialist
NPI1952715518PAC ID6305065970
Part D claims, 2023
30
Publications
18
MIPS score, 2024
89
Hospital affiliations
2
Industry payments
$15
Practice address
300 Pasteur Drive, Stanford, CA 94305
Practice phone
Call (650) 723-4000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Stanford Hospital at 300 Pasteur Drive

Hospital · Stanford, California

See all 4 affiliations

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Dr. Ellora Natu Karmarkar is an infectious disease specialist in Stanford, California

Dr. Karmarkar practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.

Dr. Karmarkar's NPI, 1952715518, was assigned on June 11, 2014. Dr. Karmarkar graduated from David Geffen School of Medicine at UCLA in 2014. Dr. Karmarkar holds California license A156669.

NPI and contact details
Medicare PAC ID
6305065970
NPI enumeration date
June 11, 2014
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(650) 723-4000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
38
Medical school graduation
2014

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

Dr. Ellora Natu Karmarkar practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California

Dr. Karmarkar's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.

Source: Dmand AI Affiliation Data

Dr. Ellora Natu Karmarkar is affiliated with 2 sites of care and 2 medical groups

Dr. Karmarkar's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Karmarkar to 1 more hospital and 1 medical group, each named with a free account. Dr. Karmarkar's employer is on file too: a hospital.

See all 4 affiliations for Dr. Karmarkar

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Ellora Natu Karmarkar's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Karmarkar practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Stanford Hospital at 300 Pasteur DriveAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Ellora Natu Karmarkar is one of 1,054 infectious disease specialists in California

Infectious disease is Dr. Karmarkar's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Karmarkar is board certified in infectious disease by the American Board of Internal Medicine. Dmand AI has Dr. Karmarkar's licenses on file in 3 states: California, Washington and Illinois.

Specialties and state licenses

  • Infectious disease, CaliforniaPrimaryLicense A156669 · 2018 to 2026 · taxonomy 207RI0200X
  • Washington license2021 to 2024
  • Internal medicine, IllinoisLicense 125064931 · 2017 to 2018 · taxonomy 207R00000X

Infectious disease specialists near Dr. Karmarkar

Counts of infectious disease specialists 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. Ellora Natu Karmarkar's patients have a median age of 41

Across all payers, Dmand AI patient panel data puts Dr. Karmarkar's median patient age at 41, with 38% women.

Dr. Karmarkar's patients across all payers

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

Patient panel by age, all payers

Median age 41

Patient panel by sex, all payers

  • Women38%
  • Men62%

Source: Dmand AI Patient Panel Data

Dr. Ellora Natu Karmarkar wrote 30 Medicare Part D claims in 2023

In 2023, Dr. Karmarkar wrote 30 Medicare Part D claims. They cover 2 drugs, with $61,992 in total drug cost. In 2018, CMS named 100 claims across 5 drugs.

Part D claims, 202330
Drugs named by CMS2
Total drug cost$61,992

Dr. Karmarkar's most prescribed drugs by claims, 2023

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, 2018 to 2023

  • 2018
  • 2023
Claims for drugs CMS names
2018: 1002023: 3070%

Drugs named by CMS: 2 in 2023, 5 in 2018.

See all prescribing by Dr. Karmarkar

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

Dr. Ellora Natu Karmarkar scored 89 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Karmarkar for performance year 2024, reported as part of a group. Dr. Karmarkar accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Karmarkar's MIPS scores, performance year 2024

  • 89of 100Final score
  • 87.1of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 70of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

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Dr. Ellora Natu Karmarkar has 18 publications on record

Dmand AI links 18 papers to Dr. Karmarkar, published from 2016 to 2024. 2024 was the busiest year, with 4. The most frequent topics are Mpox, Monkeypox, California and COVID-19. Dr. Karmarkar has published most often in Sex Transm Dis. Dr. Karmarkar's most frequent co-authors are Julia Cook Dombrowski, MD, Matthew Robert Golden, MD and Meena Ramchandani, MD.

Papers18
Years published2016 to 2024

Dr. Karmarkar's papers by year, 2016 to 2024

Topics Dr. Karmarkar writes about most

  • Mpox, Monkeypox
  • California
  • COVID-19
  • Ambulatory Care Facilities
  • Disease Outbreaks
  • Sexual Health
  • Skilled Nursing Facilities
  • Washington

Dr. Karmarkar's most frequent co-authors

Recent publications by Dr. Karmarkar

See all 18 publications and co-authors

See who Dr. Karmarkar researches with

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

How network discovery works

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

Dr. Ellora Natu Karmarkar received $15 in industry payments in 2018

CMS Open Payments shows 1 general payment to Dr. Karmarkar from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $15.

Companies that paid Dr. Karmarkar the most, 2018 to 2018

Share is of all general payments to this clinician.

See all payments to Dr. Karmarkar

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

Dr. Ellora Natu Karmarkar graduated from David Geffen School of Medicine at UCLA

Dr. Karmarkar graduated from David Geffen School of Medicine at UCLA in 2014.

  1. Medical schoolDavid Geffen School of Medicine at UCLA
  2. Board certified in infectious diseaseAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine
  4. Board certified in pediatricsAmerican Board of Pediatrics

Source: Dmand AI Professional Profile Data

Dr. Ellora Natu Karmarkar accepts plans from 3 insurance carriers

Dr. Karmarkar is in network with 3 carriers, including Aetna, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • CMS Medicare

Plan types Dr. Karmarkar accepts, by number of carriers

  1. HMO2
  2. Medicare2
  3. POS2
  4. EPO1
  5. PPO1

Source: Dmand AI Insurance Network Data

Sources for Dr. Ellora Natu Karmarkar'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 DataDmand AI Org Hierarchy Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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. Ellora Natu Karmarkar

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. Ellora Natu Karmarkar's NPI number?

Dr. Ellora Natu Karmarkar's NPI number is 1952715518. It was assigned on June 11, 2014, and it is active in the NPI Registry.

What kind of doctor is Dr. Ellora Natu Karmarkar?

Dr. Ellora Natu Karmarkar is an infectious disease specialist in Stanford, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).

Where does Dr. Ellora Natu Karmarkar practice?

Dr. Karmarkar practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Karmarkar's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Karmarkar to 1 hospital and 1 medical group.

What is Dr. Ellora Natu Karmarkar's office phone number?

The practice phone on file for Dr. Karmarkar is (650) 723-4000.

What is Dr. Ellora Natu Karmarkar's medical license number?

Dr. Karmarkar holds California license A156669, one of the licenses on file in 3 states.

Which states has Dr. Ellora Natu Karmarkar been licensed in?

Dmand AI has state licenses on file for Dr. Karmarkar in California (2018 to 2026), Washington (2021 to 2024) and Illinois (2017 to 2018).

Which hospitals is Dr. Ellora Natu Karmarkar affiliated with?

Dr. Karmarkar practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Karmarkar to 1 more hospital.

What medical group is Dr. Ellora Natu Karmarkar part of?

Dr. Karmarkar is linked to Stanford Health Care. Dmand AI links Dr. Karmarkar to 1 more medical group.

Does Dr. Ellora Natu Karmarkar accept Medicare?

Yes. CMS lists Dr. Karmarkar as accepting Medicare assignment.

What is Dr. Ellora Natu Karmarkar's MIPS score?

Dr. Karmarkar's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.

Show 8 more questionsShow fewer questions

Is Dr. Ellora Natu Karmarkar board certified?

Yes. Dr. Karmarkar is board certified in infectious disease by the American Board of Internal Medicine.

Where did Dr. Ellora Natu Karmarkar go to medical school?

Dr. Karmarkar graduated from David Geffen School of Medicine at UCLA in 2014.

What drugs does Dr. Ellora Natu Karmarkar prescribe most?

In 2023 Medicare Part D data, Dr. Karmarkar's most prescribed drugs by claims were Descovy and Tivicay.

Has Dr. Ellora Natu Karmarkar received payments from drug or device companies?

CMS Open Payments shows $15 in general payments to Dr. Karmarkar from 1 company from 2018 to 2018. The largest total came from Merck Sharp & Dohme Corporation.

How long has Dr. Ellora Natu Karmarkar been practicing?

Dr. Karmarkar graduated from medical school in 2014, 12 years ago.

Does Dr. Ellora Natu Karmarkar do research?

Dmand AI links 18 publications to Dr. Karmarkar, published from 2016 to 2024.

Who does Dr. Ellora Natu Karmarkar publish with?

Dr. Karmarkar's most frequent co-authors are Julia Cook Dombrowski, MD (4 shared papers), Matthew Robert Golden, MD (4 shared papers) and Meena Ramchandani, MD (4 shared papers).

What insurance does Dr. Ellora Natu Karmarkar accept?

Dr. Karmarkar is in network with 3 carriers, including Aetna, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.

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