NPPES file of Aug 9, 2026

Courtney Emi Takahashi, M.D.

Neurocritical Care Physician · Walnut Creek, CA

Courtney Emi Takahashi, M.D. is a neurocritical care physician with a practice address in Walnut Creek, California, and NPI 1649414681, issued on Apr 21, 2009. Check the license 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
1649414681
Name
Courtney Emi Takahashi
Credential
M.D.
Primary taxonomy
Neurocritical Care Physician 2084A2900X
License number
263754 MA
Self-reported in NPPES; status is on the state search
Practice location
1601 Ygnacio Valley RD, Walnut Creek, CA 94598
Phone
(808) 203-8671
Enumerated
Apr 21, 2009
Record last updated
Oct 24, 2023
Medicaid IDs
110104614A MA
3108980 NH
Medicare enrollment
Enrolled (PECOS I20230821002611); may accept Medicare assignment
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.
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Also registered at 1601 Ygnacio Valley RD

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

  1. Christine Abboud, D.O.Anesthesiology Physician1174901508
  2. Amy Aiyegbusi, IBCLCLactation Consultant (Registered Nurse)1275204067
  3. Alina AndradePhysician Assistant1114416773
  4. Radhika Annadata, MDAnesthesiology Physician1255379624
  5. Kirkman Beckwith, MDAnesthesiology Physician1073551057
  6. Stacie Bennett, MDNeonatal-Perinatal Medicine Physician1982660080

Verify Courtney Emi Takahashi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of CaliforniaCheck 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.

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Bills Medicare through 3 group practices

  1. Bay Area Neurointensivists IncWalnut Creek, CA
  2. John Muir Trauma Physicians Billing ServiceWalnut Creek, CA
  3. Moussa F Yazbeck MD IncWalnut Creek, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Courtney Emi Takahashi among 74 neurocritical care physician records in California

Courtney Emi Takahashi, M.D. is one of 74 neurocritical care physician records with a practice address in California. 97% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 26% of them.

  • NPI issued2009 · 26% of these records are older, 68% newer
  • In a Medicare fileYes · 97% of these records are
  • In the CMS Doctors and Clinicians fileYes · 86% of these records are
  • Graduated2009 · median 2011 among the 64 with a school on file
  • Record last updated2023 · 28% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084A2900X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurocritical Care Physician providers in California

There are 74 neurocritical care physician records in California.

The 8 neurocritical care physician records with the nearest ZIP codes

  1. Marion Buckwalter, MDStanford, CA 943051356394589
  2. Karen Hirsch, MDStanford, CA 943051053516641
  3. Hannah Kirsch, MDStanford, CA 943051528479318
  4. Prashanth Krishnamohan, MDStanford, CA 943051457632432
  5. Lucia Rivera Lara, MDStanford, CA 943051356502744
  6. Zachary Threlkeld, MDStanford, CA 943051639445372
  7. Jack Wang, MD, PHD.Stanford, CA 943051154733053
  8. John Greene, MDSan Francisco, CA 941431205397841

Common questions

What is Courtney Emi Takahashi, M.D.'s NPI number?

Courtney Emi Takahashi, M.D.'s National Provider Identifier (NPI) is 1649414681, issued on Apr 21, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Courtney Emi Takahashi, M.D. located?

The NPPES record lists a practice address at 1601 Ygnacio Valley RD, Walnut Creek, CA, 94598. Phone: (808) 203-8671. Providers update this record themselves, so call before visiting.

How can I verify Courtney Emi Takahashi, M.D.'s license?

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.