NPPES file of Aug 9, 2026

Ellora Natu Karmarkar, MD

Infectious Disease Physician · Stanford, CA

Ellora Natu Karmarkar, MD is an infectious disease physician with a practice address in Stanford, California, and NPI 1952715518, issued on Jun 11, 2014. Check the license (California A156669, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1952715518
Name
Ellora Natu Karmarkar
Credential
MD
Primary taxonomy
Infectious Disease Physician 207RI0200X
License numbers
A156669 CA
125064931 IL
Self-reported in NPPES; status is on the state search
Practice location
300 Pasteur Dr, Stanford, CA 94305
Phone
(650) 723-4000
Enumerated
Jun 11, 2014
Record last updated
Oct 31, 2024
Medicare enrollment
Enrolled (PECOS I20240826003231); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 2014
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 300 Pasteur Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Cooper Aakhus, MDEmergency Medicine Physician1194351007
  2. Oliver Aalami, M.D.Vascular Surgery Physician1225229024
  3. Alistair Aaronson, MDInternal Medicine Physician1457628760
  4. Sumaira Aasi, MDMOHS-Micrographic Surgery Physician1780675181
  5. Fahim Abbasi, M.D.Internal Medicine Physician1841484037
  6. Mohamad Abbass, MDNeurological Surgery Physician1679492151

Verify Ellora Natu Karmarkar in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A156669
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

One hospital affiliation

  1. Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Ellora Natu Karmarkar among 1,119 infectious disease physician records in California

Ellora Natu Karmarkar, MD is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 80% of them.

  • NPI issued2014 · 80% of these records are older, 18% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2014 · median 2003 among the 735 with a school on file
  • Record last updated2024 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

58 infectious disease physician records list a practice address in Stanford

They are 58 of the 5,606 NPPES records with a practice address in Stanford, and 1,119 infectious disease physician records in California.

The 8 infectious disease physician records with the nearest ZIP codes

  1. Eran Bendavid, MDStanford, CA 943051144330069
  2. Brian Blackburn, MDStanford, CA 943051861542680
  3. Catherine Blish, MDStanford, CA 943051710067285
  4. Hector Bonilla, MDStanford, CA 943051225115371
  5. Philip Grant, MDStanford, CA 943051205949070
  6. Michael Harbour, MDStanford, CA 943051013022169
  7. Dora Ho, MDStanford, CA 943051619032224
  8. Shanthi Kappagoda, M.D.Stanford, CA 943051720195381

Common questions

What is Ellora Natu Karmarkar, MD's NPI number?

Ellora Natu Karmarkar, MD's National Provider Identifier (NPI) is 1952715518, issued on Jun 11, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Ellora Natu Karmarkar, MD located?

The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.

How can I verify Ellora Natu Karmarkar, MD's license?

NPPES lists California license number A156669, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.