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Dr. Derek Y. Obayashi, MD

  • Palo Alto, CA
  • Pediatric cardiology physician
NPI1568659134
Publications
6
Industry payments
$31
Affiliated sites
1
Medical group
1
Insurance carriers
11
Practice address
795 El Camino Real, Palo Alto, CA 94301
Practice phone
Call (650) 324-1832
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Surgery Center Palo Alto

Surgery Center - Medicare-Certified · Palo Alto, California

See all 2 affiliations

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Dr. Derek Y. Obayashi is a pediatric cardiology physician in Palo Alto, California

Dr. Obayashi practices at Surgery Center Palo Alto in Palo Alto, California.

Dr. Obayashi's NPI, 1568659134, was assigned on September 27, 2007. Dr. Obayashi graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2003. Dr. Obayashi holds California license A90576.

NPI and contact details
NPI
1568659134NPI Registry (opens in a new tab)
NPI enumeration date
September 27, 2007
NPI status
Active
Practice phone
(650) 324-1832
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Medical school graduation
2003

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

Dr. Derek Y. Obayashi practices at Surgery Center Palo Alto in Palo Alto, California

Dr. Obayashi's primary practice is Surgery Center Palo Alto, at 795 El Camino Real, Palo Alto, CA 94301. The practice phone is (650) 324-1832.

  • Surgery Center Palo Alto
    795 El Camino Real, Palo Alto, CA 94301Phone(650) 324-1832

Source: Dmand AI Affiliation Data

Dr. Derek Y. Obayashi is affiliated with 1 site of care and 1 medical group

Dr. Obayashi's primary practice is Surgery Center Palo Alto in Palo Alto, California. The medical group on file is Palo Alto Foundation Medical Group.

Surgery Center Palo AltoSurgery Center - Medicare-Certified · Palo Alto, CaliforniaPrimary
Palo Alto Foundation Medical GroupPrimary care group, Palo Alto, CAParent health systemName with a free account
See all 2 affiliations for Dr. Obayashi

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

Dmand AI tracks the EHR system at Dr. Derek Y. Obayashi's practice

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

EHR by site
SiteEHR vendor and product
Surgery Center Palo AltoAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Derek Y. Obayashi is one of 331 pediatric cardiology physicians in California

Pediatric cardiology is Dr. Obayashi's primary specialty in the NPI Registry, under taxonomy code 2080P0202X. Dr. Obayashi is board certified in pediatric cardiology by the American Board of Pediatrics. Dmand AI has Dr. Obayashi's licenses on file in 3 states: California, Connecticut and Washington.

Specialties and state licenses

  • Pediatric cardiology, CaliforniaPrimaryLicense A90576 · 2005 to 2027 · taxonomy 2080P0202X
  • Connecticut licenseLicense 050859 · 2012 to 2016
  • Washington licenseLicense MD60087316 · 2009 to 2014

Pediatric cardiology physicians near Dr. Obayashi

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

331pediatric cardiology physicians in California68pediatric cardiology physicians in Palo Alto

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

Dr. Derek Y. Obayashi's patients have a median age of 15

Across all payers, Dmand AI patient panel data puts Dr. Obayashi's median patient age at 15, with 52% women.

Dr. Obayashi's patients across all payers

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

Patient panel by age, all payers

Median age 15

Patient panel by sex, all payers

  • Women52%
  • Men47%

Source: Dmand AI Patient Panel Data

Dr. Derek Y. Obayashi has 6 publications on record

Dmand AI links 6 papers to Dr. Obayashi, published from 2012 to 2015. The most frequent topics are Echocardiography, Rats, Sprague-Dawley and Ventricular Function, Left. Dr. Obayashi has published most often in J Thorac Cardiovasc Surg. Dr. Obayashi's most frequent co-authors are William Decampli, MD, Joseph Nilas Young, MD and Rajesh Punn.

Papers6
Years published2012 to 2015

Topics Dr. Obayashi writes about most

  • Echocardiography
  • Rats, Sprague-Dawley
  • Ventricular Function, Left
  • Cardioplegic Solutions
  • Exercise
  • Exercise Test
  • Heart
  • Heart Ventricles

Dr. Obayashi's most frequent co-authors

Recent publications by Dr. Obayashi

See all 6 publications and co-authors

See who Dr. Obayashi researches with

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

How network discovery works

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

Dr. Derek Y. Obayashi received $31 in industry payments in 2024

CMS Open Payments shows 1 general payment to Dr. Obayashi from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Corium, LLC paid the most, $31.

Companies that paid Dr. Obayashi the most, 2024 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Obayashi

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

Dr. Derek Y. Obayashi has 2 awards and honors on record

Dmand AI lists 2 awards for Dr. Obayashi.

Awards and honors for Dr. Obayashi

  1. Undated
    • ACC Fellow
    • Fellow (FAAP)

Source: Dmand AI Professional Profile Data

Dr. Derek Y. Obayashi graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science

Dr. Obayashi graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2003. Dr. Obayashi is a member of ACC.

  1. Medical schoolChicago Medical School at Rosalind Franklin University of Medicine and Science
  2. Board certified in pediatric cardiologyAmerican Board of Pediatrics

Source: Dmand AI Professional Profile Data

Dr. Derek Y. Obayashi accepts plans from 11 insurance carriers

Dr. Obayashi is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Elevance
  • United Healthcare
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • Alliant Health Plans
  • +3 more carriersWith a free account

Plan types Dr. Obayashi accepts, by number of carriers

  1. PPO8
  2. Medicare7
  3. HMO6
  4. EPO4
  5. POS3

Source: Dmand AI Insurance Network Data

Sources for Dr. Derek Y. Obayashi'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
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)
Awards and committee rolesDmand AI Professional Profile Data
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. Derek Y. Obayashi

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. Derek Y. Obayashi's NPI number?

Dr. Derek Y. Obayashi's NPI number is 1568659134. It was assigned on September 27, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Derek Y. Obayashi?

Dr. Derek Y. Obayashi is a pediatric cardiology physician in Palo Alto, California. The primary specialty in the NPI Registry is Pediatric Cardiology Physician (taxonomy code 2080P0202X).

Where does Dr. Derek Y. Obayashi practice?

Dr. Obayashi practices at 795 El Camino Real, Palo Alto, CA 94301. Dr. Obayashi's primary practice is Surgery Center Palo Alto in Palo Alto, California.

What is Dr. Derek Y. Obayashi's office phone number?

The practice phone on file for Dr. Obayashi is (650) 324-1832.

What is Dr. Derek Y. Obayashi's medical license number?

Dr. Obayashi holds California license A90576, one of the licenses on file in 3 states.

Which states has Dr. Derek Y. Obayashi been licensed in?

Dmand AI has state licenses on file for Dr. Obayashi in California (2005 to 2027), Connecticut (2012 to 2016) and Washington (2009 to 2014).

What medical group is Dr. Derek Y. Obayashi part of?

Dr. Obayashi is linked to Palo Alto Foundation Medical Group.

Is Dr. Derek Y. Obayashi board certified?

Yes. Dr. Obayashi is board certified in pediatric cardiology by the American Board of Pediatrics.

Where did Dr. Derek Y. Obayashi go to medical school?

Dr. Obayashi graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2003.

Has Dr. Derek Y. Obayashi received payments from drug or device companies?

CMS Open Payments shows $31 in general payments to Dr. Obayashi from 1 company from 2024 to 2024. The largest total came from Corium, LLC.

Show 4 more questionsShow fewer questions

How long has Dr. Derek Y. Obayashi been practicing?

Dr. Obayashi graduated from medical school in 2003, 23 years ago.

Does Dr. Derek Y. Obayashi do research?

Dmand AI links 6 publications to Dr. Obayashi, published from 2012 to 2015.

Who does Dr. Derek Y. Obayashi publish with?

Dr. Obayashi's most frequent co-authors are William Decampli, MD (3 shared papers), Joseph Nilas Young, MD (3 shared papers) and Rajesh Punn (2 shared papers).

What insurance does Dr. Derek Y. Obayashi accept?

Dr. Obayashi is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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