Dr. James Ralph Korndorffer Jr., MD

  • Stanford, CA
  • General surgeon
NPI1346333655PAC ID8123094612
Medicare services, 2024
39
Medicare patients, 2024
60
Publications
79
Hospital affiliations
2
Industry payments
$66,281
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 7 affiliations

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Dr. James Ralph Korndorffer Jr. is a general surgeon in Stanford, California

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

Dr. Korndorffer's NPI, 1346333655, was assigned on October 2, 2006. Dr. Korndorffer graduated from USF Health Morsani College of Medicine in 1990. Dr. Korndorffer holds Texas license V5790.

NPI and contact details
Medicare PAC ID
8123094612
NPI enumeration date
October 2, 2006
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
Male
Estimated age
62
Medical school graduation
1990

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

Dr. James Ralph Korndorffer Jr. practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California

Dr. Korndorffer'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. James Ralph Korndorffer Jr. is affiliated with 4 sites of care and 3 medical groups

Dr. Korndorffer's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is UT Health Austin. Dmand AI also links Dr. Korndorffer to 1 more hospital, 2 medical groups, 1 group practice or clinic and 1 ambulatory surgery center, each named with a free account.

See all 7 affiliations for Dr. Korndorffer

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

Dmand AI tracks the EHR system at Dr. James Ralph Korndorffer Jr.'s practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Korndorffer practices, 4 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
+3 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. James Ralph Korndorffer Jr. is one of 2,926 general surgeons in California

Surgery is Dr. Korndorffer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Korndorffer is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Korndorffer's licenses on file in 4 states: Texas, California, Louisiana and Alabama.

Specialties and state licenses

  • Surgery, TexasPrimaryLicense V5790 · 2025 to 2026 · taxonomy 208600000X
  • California licenseLicense G151411 · 2017 to 2027
  • Louisiana licenseLicense 15058R · 2003 to 2018
  • Alabama license1995 to 2009

Clinical focus

Dmand AI lists groin hernia surgery among the conditions Dr. Korndorffer treats.

General surgeons near Dr. Korndorffer

Counts of general surgeons 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. James Ralph Korndorffer Jr. billed Medicare for 39 services in 2024

CMS data shows 39 Medicare services from Dr. Korndorffer across 3 procedure codes in 2024, for 60 Medicare patients. Medicare paid $6,919 for them.

Medicare services, 202439
Medicare patients60
Paid by Medicare$6,919
Procedure codes3

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

  • 2023
  • 2024
Office and hospital visits
2023: 552024: 2849%
Surgery
2023: 112024: 11No change

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

  • In an office2872%
  • In a facility1128%

Dr. Korndorffer compared with the California median for general surgeons, 2024

  • Dr. Korndorffer
  • California median
Medicare services
39vs 16677% below
Medicare patients
60vs 12150% below

Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.

Dr. Korndorffer'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.

See all procedures by Dr. Korndorffer

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Korndorffer and other general surgeons in California.

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

Dr. James Ralph Korndorffer Jr. treated 60 Medicare patients in 2024, average age 72

CMS counts 60 Medicare patients who saw Dr. Korndorffer in 2024. The largest group is 65 to 74, with 26 patients. 72% of them have high cholesterol, and 65% have high blood pressure. 33% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Korndorffer's median patient age at 42, with 55% women.

Medicare patients, 202460
Average age72
Average risk score1.53
Also on Medicaid33%

Dr. Korndorffer's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Korndorffer's Medicare patients by sex, 2024

  • Women1627%
  • Men4473%

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

  1. High cholesterol72%
  2. High blood pressure65%
  3. Arthritis37%
  4. Ischemic heart disease35%
  5. Diabetes32%
  6. Atrial fibrillation28%
  7. Chronic kidney disease23%
  8. Mood disorders23%

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

Dr. Korndorffer's patients across all payers

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

Patient panel by age, all payers

Median age 42

Patient panel by sex, all payers

  • Women55%
  • Men45%

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

How Dr. James Ralph Korndorffer Jr. takes part in Medicare

Dr. Korndorffer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

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

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Dr. James Ralph Korndorffer Jr. has 79 publications on record

Dmand AI links 79 papers to Dr. Korndorffer, published from 2004 to 2024. 2017 was the busiest year, with 8. The most frequent topics are Clinical Competence, General Surgery and Laparoscopy. Dr. Korndorffer has published most often in Surg Endosc. Dr. Korndorffer's most frequent co-authors are Daniel Joseph Scott, FACS, MD, Rafael Sierra, MD and Christopher Garnet Ducoin, MD, MPH.

Papers79
Years published2004 to 2024

Dr. Korndorffer's papers by year, 2015 to 2024

Topics Dr. Korndorffer writes about most

  • Clinical Competence
  • General Surgery
  • Laparoscopy
  • Internship and Residency
  • Computer Simulation
  • Curriculum
  • Suture Techniques
  • Education, Medical, Graduate

Dr. Korndorffer's most frequent co-authors

Recent publications by Dr. Korndorffer

See all 79 publications and co-authors

See who Dr. Korndorffer researches with

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

How network discovery works

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

Dr. James Ralph Korndorffer Jr. received $66,281 in industry payments from 2016 to 2024

CMS Open Payments shows 86 general payments to Dr. Korndorffer from 8 drug and device companies from 2016 to 2024. Honoraria make up the largest share, 54% of the total. Becton, Dickinson and Company paid the most, $46,911.

General payments to Dr. Korndorffer by program year, 2016 to 2024

General payments to Dr. Korndorffer by kind, 2016 to 2024

$66.3Kin total
  • Honoraria$36,07754%
  • Travel and lodging$13,47820%
  • Education$10,30516%
  • Consulting fees$2,9754%
  • Other$3,4475%

Companies that paid Dr. Korndorffer the most, 2016 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Korndorffer

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

Dr. James Ralph Korndorffer Jr. has 2 awards and honors on record

Dmand AI lists 2 awards for Dr. Korndorffer, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Korndorffer

  1. 2013
    • CMS Stage 1 EHR
  2. 2012
    • ACS Fellow

Source: Dmand AI Professional Profile Data

Dr. James Ralph Korndorffer Jr. graduated from USF Health Morsani College of Medicine

Dr. Korndorffer graduated from USF Health Morsani College of Medicine in 1990. Dr. Korndorffer is a member of AOA, ACS, American Surgical Association, Association for Program Directors in Surgery, Association for Surgical Education and SAGES.

  1. Medical schoolUSF Health Morsani College of Medicine
  2. Board certified in surgeryAmerican Board of Surgery

Source: Dmand AI Professional Profile Data

Dr. James Ralph Korndorffer Jr. accepts plans from 17 insurance carriers

Dr. Korndorffer is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Alliant Health Plans
  • Aspirus Health Plan
  • Blue Cross Blue Shield of Massachusetts
  • +9 more carriersWith a free account

Plan types Dr. Korndorffer accepts, by number of carriers

  1. PPO13
  2. Medicare9
  3. HMO7
  4. POS5
  5. EPO4

Source: Dmand AI Insurance Network Data

Sources for Dr. James Ralph Korndorffer Jr.'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 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)
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)
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. James Ralph Korndorffer Jr.

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. James Ralph Korndorffer Jr.'s NPI number?

Dr. James Ralph Korndorffer Jr.'s NPI number is 1346333655. It was assigned on October 2, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. James Ralph Korndorffer Jr.?

Dr. James Ralph Korndorffer Jr. is a general surgeon in Stanford, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).

Where does Dr. James Ralph Korndorffer Jr. practice?

Dr. Korndorffer practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Korndorffer's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Korndorffer to 1 hospital, 2 medical groups, 1 group practice or clinic and 1 ambulatory surgery center.

What is Dr. James Ralph Korndorffer Jr.'s office phone number?

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

What is Dr. James Ralph Korndorffer Jr.'s medical license number?

Dr. Korndorffer holds Texas license V5790, one of the licenses on file in 4 states.

Which states has Dr. James Ralph Korndorffer Jr. been licensed in?

Dmand AI has state licenses on file for Dr. Korndorffer in Texas (2025 to 2026), California (2017 to 2027), Louisiana (2003 to 2018) and Alabama (1995 to 2009).

Which hospitals is Dr. James Ralph Korndorffer Jr. affiliated with?

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

What medical group is Dr. James Ralph Korndorffer Jr. part of?

Dr. Korndorffer is linked to UT Health Austin. Dmand AI links Dr. Korndorffer to 2 more medical groups.

Does Dr. James Ralph Korndorffer Jr. accept Medicare?

Yes. CMS data shows Dr. Korndorffer billed Medicare for 39 services in 2024, and Dr. Korndorffer accepts Medicare assignment.

How many Medicare patients does Dr. James Ralph Korndorffer Jr. see?

CMS counts 60 Medicare patients who saw Dr. Korndorffer in 2024, with an average age of 72.

Show 8 more questionsShow fewer questions

Is Dr. James Ralph Korndorffer Jr. board certified?

Yes. Dr. Korndorffer is board certified in surgery by the American Board of Surgery.

What services does Dr. James Ralph Korndorffer Jr. bill to Medicare?

In 2024, Dr. Korndorffer's most billed Medicare services were office visit, new patient (99203), office visit, established patient (99213) and surgery: digestive system (49505).

Where did Dr. James Ralph Korndorffer Jr. go to medical school?

Dr. Korndorffer graduated from USF Health Morsani College of Medicine in 1990.

Has Dr. James Ralph Korndorffer Jr. received payments from drug or device companies?

CMS Open Payments shows $66,281 in general payments to Dr. Korndorffer from 8 companies from 2016 to 2024. The largest total came from Becton, Dickinson and Company.

How long has Dr. James Ralph Korndorffer Jr. been practicing?

Dr. Korndorffer graduated from medical school in 1990, 36 years ago.

Does Dr. James Ralph Korndorffer Jr. do research?

Dmand AI links 79 publications to Dr. Korndorffer, published from 2004 to 2024.

Who does Dr. James Ralph Korndorffer Jr. publish with?

Dr. Korndorffer's most frequent co-authors are Daniel Joseph Scott, FACS, MD (26 shared papers), Rafael Sierra, MD (12 shared papers) and Christopher Garnet Ducoin, MD, MPH (7 shared papers).

What insurance does Dr. James Ralph Korndorffer Jr. accept?

Dr. Korndorffer is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.

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