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Dr. Mark L. Koransky, MD
NPI1750472338PAC ID8123083029
- Medicare services, 2024
- 306
- Medicare patients, 2024
- 234
- Part D claims, 2024
- 66
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 3200 Kearney Street, Fremont, CA 94538
- Practice phone
- Call (510) 498-2812
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Palo Alto Medical Foundation-Fremont Center
Mammography / Breast Imaging Center · Fremont, California
Find Dr. Koransky's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark L. Koransky is a general surgeon in Fremont, California
Dr. Koransky practices at Palo Alto Medical Foundation-Fremont Center in Fremont, California.
Dr. Koransky's NPI, 1750472338, was assigned on September 27, 2006. Dr. Koransky graduated from UCSF School of Medicine in 1996. Dr. Koransky holds California license A63039.
NPI and contact details
- NPI
- 1750472338NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123083029
- NPI enumeration date
- September 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 498-2812
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark L. Koransky practices at Palo Alto Medical Foundation-Fremont Center in Fremont, California
Dr. Koransky's primary practice is Palo Alto Medical Foundation-Fremont Center, at 3200 Kearney Street, Fremont, CA 94538. The practice phone is (510) 498-2812.
- Palo Alto Medical Foundation-Fremont Center3200 Kearney Street, Fremont, CA 94538Phone(510) 498-2812
Source: Dmand AI Affiliation Data
Dr. Mark L. Koransky is affiliated with 4 sites of care and 2 medical groups
Dr. Koransky's primary practice is Palo Alto Medical Foundation-Fremont Center in Fremont, California. Dr. Koransky is also affiliated with Washington Health. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Dr. Koransky to 2 more group practices and clinics and 1 medical group, each named with a free account. Dr. Koransky's employer is on file too: a breast imaging center.
Palo Alto Medical Foundation-Fremont CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark L. Koransky's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Koransky practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Palo Alto Medical Foundation-Fremont Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark L. Koransky is one of 2,926 general surgeons in California
Surgery is Dr. Koransky's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Koransky is board certified in surgery by the American Board of Surgery. Dr. Koransky is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
Clinical focus
Dmand AI lists abdominal adhesion surgery, abdominal hernia repair surgery, colon removal, gallbladder removal, groin hernia surgery, hemorrhoids and mastectomy among the conditions Dr. Koransky treats.
General surgeons near Dr. Koransky
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. Mark L. Koransky billed Medicare for 306 services in 2024
CMS data shows 306 Medicare services from Dr. Koransky across 13 procedure codes in 2024, for 234 Medicare patients. Medicare paid $49,093 for them.
Medicare services, 2024306
Medicare patients234
Paid by Medicare$49,093
Procedure codes13
Dr. Koransky's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2232024: 2334%
- Surgery
- 2023: 1062024: 7331%
Where Dr. Koransky's Medicare services took place, 2024
- In an office20868%
- In a facility9832%
Dr. Koransky compared with the California median for general surgeons, 2024
- Dr. Koransky
- California median
- Medicare services
- 306vs 16684% above
- Medicare patients
- 234vs 12193% above
- Part D claims
- 58vs 3471% above
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Koransky'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.
Need commercial claims for Dr. Koransky?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Koransky and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark L. Koransky treated 234 Medicare patients in 2024, average age 76
CMS counts 234 Medicare patients who saw Dr. Koransky in 2024. The largest group is 65 to 74, with 107 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 26% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Koransky's median patient age at 53, with 54% women.
Medicare patients, 2024234
Average age76
Average risk score1.27
Also on Medicaid26%
Dr. Koransky's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Koransky's Medicare patients by sex, 2024
- Women10947%
- Men12553%
Chronic conditions among Dr. Koransky's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis35%
- Diabetes35%
- Ischemic heart disease32%
- Cancer27%
- Chronic kidney disease26%
- Osteoporosis22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Koransky's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark L. Koransky wrote 66 Medicare Part D claims in 2024
In 2024, Dr. Koransky wrote 66 Medicare Part D claims for 56 patients. 100% of them were for generic drugs. CMS names the drug for 58 of them, across 2 drugs with 11 or more claims each, at $290 in total drug cost. In 2023, CMS named 59 claims across 1 drug.
Part D claims, 202466
Drugs named by CMS2
Total drug cost$290
Part D patients56
Dr. Koransky's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Koransky's Part D claims, 2024
- Opioids89%59 of 66 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 592024: 582%
Drugs named by CMS: 2 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mark L. Koransky ranks in the 84th percentile for mastectomy in Medicare
Dr. Koransky accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 27 procedures of mastectomy by Dr. Koransky, more than 84% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Koransky ranks in Medicare procedure volume
- Mastectomy
- 84th percentile27 procedures
- Hernia repair (minimally invasive)
- 75th percentile12 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of skin lesions: 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. Mark L. Koransky has 2 publications on record
Dmand AI links 2 papers to Dr. Koransky. Dr. Koransky's most frequent co-authors are Robert Robbins, MD and Gerald J. Berry, MD.
Papers2
Dr. Koransky's most frequent co-authors
Recent publications by Dr. Koransky
Trends Cardiovasc Med
Endothelial Growth FactorsGenetic TherapyGene Transfer Techniques
See who Dr. Koransky researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Koransky works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark L. Koransky received $1,406 in industry payments from 2016 to 2025
CMS Open Payments shows 11 general payments to Dr. Koransky from 3 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 82% of the total. Intuitive Surgical, Inc. paid the most, $1,287.
General payments to Dr. Koransky by program year, 2016 to 2025
General payments to Dr. Koransky by kind, 2016 to 2025
$1.4Kin total
- Travel and lodging$1,15782%
- Food and beverage$24918%
Companies that paid Dr. Koransky the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark L. Koransky has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Koransky, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Koransky
- 2013
- CMS Stage 1 EHR
- 2012
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. Mark L. Koransky graduated from UCSF School of Medicine
Dr. Koransky graduated from UCSF School of Medicine in 1996. Dr. Koransky is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Mark L. Koransky accepts plans from 14 insurance carriers
Dr. Koransky is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Koransky accepts, by number of carriers
- PPO9
- HMO6
- Medicare6
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark L. Koransky's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors 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-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark L. Koransky
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. Mark L. Koransky's NPI number?
Dr. Mark L. Koransky's NPI number is 1750472338. It was assigned on September 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark L. Koransky?
Dr. Mark L. Koransky is a general surgeon in Fremont, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Mark L. Koransky practice?
Dr. Koransky practices at 3200 Kearney Street, Fremont, CA 94538. Dr. Koransky's primary practice is Palo Alto Medical Foundation-Fremont Center in Fremont, California. Dmand AI also links Dr. Koransky to 2 group practices and clinics and 1 medical group.
What is Dr. Mark L. Koransky's office phone number?
The practice phone on file for Dr. Koransky is (510) 498-2812.
What is Dr. Mark L. Koransky's medical license number?
Dr. Koransky holds California license A63039.
Which hospitals is Dr. Mark L. Koransky affiliated with?
Dr. Koransky is affiliated with Washington Health.
What medical group is Dr. Mark L. Koransky part of?
Dr. Koransky is linked to Palo Alto Foundation Medical Group. Dmand AI links Dr. Koransky to 1 more medical group.
Does Dr. Mark L. Koransky accept Medicare?
Yes. CMS data shows Dr. Koransky billed Medicare for 306 services in 2024, and Dr. Koransky accepts Medicare assignment.
How many Medicare patients does Dr. Mark L. Koransky see?
CMS counts 234 Medicare patients who saw Dr. Koransky in 2024, with an average age of 76.
Is Dr. Mark L. Koransky board certified?
Yes. Dr. Koransky is board certified in surgery by the American Board of Surgery.
Show 8 more questionsShow fewer questions
What services does Dr. Mark L. Koransky bill to Medicare?
In 2024, Dr. Koransky's most billed Medicare services were office visit, new patient (99203), office visit, established patient (99213) and office visit, new patient (99204).
Where did Dr. Mark L. Koransky go to medical school?
Dr. Koransky graduated from UCSF School of Medicine in 1996.
What drugs does Dr. Mark L. Koransky prescribe most?
In 2024 Medicare Part D data, Dr. Koransky's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Tramadol HCl.
Has Dr. Mark L. Koransky received payments from drug or device companies?
CMS Open Payments shows $1,406 in general payments to Dr. Koransky from 3 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Mark L. Koransky been practicing?
Dr. Koransky graduated from medical school in 1996, 30 years ago.
Does Dr. Mark L. Koransky do research?
Dmand AI links 2 publications to Dr. Koransky.
Who does Dr. Mark L. Koransky publish with?
Dr. Koransky's most frequent co-authors are Robert Robbins, MD (2 shared papers) and Gerald J. Berry, MD (1 shared paper).
What insurance does Dr. Mark L. Koransky accept?
Dr. Koransky is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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