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Dr. Marlene Grenon, MD
NPI1124260534
- Medicare services, 2019
- 43
- Publications
- 5
- Clinical trials
- 7
- Industry payments
- $1,021
- Insurance carriers
- 5
- Practice address
- 400 Parnassus Ave, San Francisco, CA 94143-2202
- Practice phone
- Call (415) 353-2357
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Grenon's professional email, personal email and mobile number
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Dr. Marlene Grenon is a general surgeon in San Francisco, California
Dr. Grenon practices in San Francisco, California.
Dr. Grenon's NPI, 1124260534, was assigned on March 31, 2009. Dr. Grenon graduated from McGill University Faculty of Medicine in 2000. Dr. Grenon's Arizona license number on file is 41320.
NPI and contact details
- NPI
- 1124260534NPI Registry (opens in a new tab)
- NPI enumeration date
- March 31, 2009
- NPI status
- Active
- Practice phone
- (415) 353-2357
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Marlene Grenon's practice address is in San Francisco, California
Dr. Grenon's practice address in the NPI Registry is 400 Parnassus Ave, San Francisco, CA 94143-2202. The practice phone is (415) 353-2357.
- NPI Registry address400 Parnassus Ave, San Francisco, CA 94143-2202Phone(415) 353-2357
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Marlene Grenon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grenon practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Grenon's practice | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Grenon practices
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Dr. Marlene Grenon is one of 2,926 general surgeons in California
Surgery is Dr. Grenon's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Grenon's licenses on file in 3 states: Arizona, California and Texas.
Specialties and state licenses
- Surgery, ArizonaPrimary
- California license
- Texas license
General surgeons near Dr. Grenon
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. Marlene Grenon billed Medicare for 43 services in 2019
CMS data shows 43 Medicare services from Dr. Grenon across 2 procedure codes in 2019, all of them office visits. Medicare paid $2,320 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 201943
Paid by Medicare$2,320
Procedure codes2
Dr. Grenon's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 332019: 4330%
Dr. Grenon compared with the California median for general surgeons, 2019
- Dr. Grenon
- California median
- Medicare services
- 43vs 16674% below
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Grenon's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
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Dr. Marlene Grenon has 5 publications on record
Dmand AI links 5 papers to Dr. Grenon, published from 2003 to 2021. 2014 was the busiest year, with 2. The most frequent topics are Pilot Projects. Dr. Grenon has published most often in Ann Vasc Surg. Dr. Grenon's most frequent co-authors are Joseph Hopkins Rapp, MD, Carlos Fares Bechara, MD and Jean Bismuth, MD.
Papers5
Years published2003 to 2021
Dr. Grenon's papers by year, 2003 to 2021
Topics Dr. Grenon writes about most
- Pilot Projects
Dr. Grenon's most frequent co-authors
- Joseph Hopkins Rapp, MD2 shared papers
- Carlos Fares Bechara, MD1 shared paper
- Jean Bismuth, MD1 shared paper
Recent publications by Dr. Grenon
Contrast MediaFeasibility StudiesFerrosoferric Oxide
Ann Vasc Surg
Aneurysm, FalseAngiographyBites and Stings
See who Dr. Grenon researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Grenon 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. Marlene Grenon has worked on 7 clinical trials
Dmand AI links Dr. Grenon to 7 clinical trials, 2 of them phase 2 studies. 1 is still active or recruiting. Conditions studied include Aortic Aneurysm, Abdominal, Peripheral Arterial Disease and Peripheral Vascular Diseases. University of California, San Francisco sponsors the most, 6.
Conditions in Dr. Grenon's trials
- Aortic Aneurysm, Abdominal
- Peripheral Arterial Disease
- Peripheral Vascular Diseases
- Aortic Aneurysm, Thoracoabdominal
- Chronic Limb-Threatening Ischemia
Investigators on the most trials with Dr. Grenon
- Warren J. Gasper, MD5 shared trials
- Michael Salvatore Conte, MD3 shared trials
- Joseph Hopkins Rapp, MD3 shared trials
Recent clinical trials with Dr. Grenon
Aortic Aneurysm, AbdominalAortic AneurysmPro-Omega
Vascular CalcificationCalcinosisSPM Emulsion, Dose-modalitySPM Softgel, Dose-Modality
Chronic Limb-Threatening IschemiaIntermittent ClaudicationPro-Omega
The Effects of Omega-3 Fatty Acids on Peripheral Arterial Disease II (opens in a new tab)
CompletedPhase 2
Peripheral Arterial DiseasePeripheral Vascular DiseasesPro-Omega
The Effects of Sedentarism on Vascular Function, Inflammation, and Insulin Resistance (opens in a new tab)
TerminatedPhase 2
Sedentary BehaviorMetabolic SyndromeFish Oil (Omega-3 Fatty Acids)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Marlene Grenon received $1,021 in industry payments from 2016 to 2018
CMS Open Payments shows 3 general payments to Dr. Grenon from 2 drug and device companies from 2016 to 2018. Consulting fees make up the largest share, 73% of the total. Terumo Medical Corporation paid the most, $750.
General payments to Dr. Grenon by program year, 2016 to 2018
General payments to Dr. Grenon by kind, 2016 to 2018
$1Kin total
- Consulting fees$75073%
- Food and beverage$25225%
- Travel and lodging$192%
Companies that paid Dr. Grenon the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marlene Grenon graduated from McGill University Faculty of Medicine
Dr. Grenon graduated from McGill University Faculty of Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Marlene Grenon accepts plans from 5 insurance carriers
Dr. Grenon is in network with 5 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
Plan types Dr. Grenon accepts, by number of carriers
- PPO5
- Medicare4
- POS2
- EPO1
- HMO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Marlene Grenon'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice 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 |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Marlene Grenon
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. Marlene Grenon's NPI number?
Dr. Marlene Grenon's NPI number is 1124260534. It was assigned on March 31, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Marlene Grenon?
Dr. Marlene Grenon is a general surgeon in San Francisco, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Marlene Grenon practice?
Dr. Grenon practices at 400 Parnassus Ave, San Francisco, CA 94143-2202.
What is Dr. Marlene Grenon's office phone number?
The practice phone on file for Dr. Grenon is (415) 353-2357.
What is Dr. Marlene Grenon's medical license number?
Dr. Grenon's Arizona license number on file is 41320, one of the licenses on file in 3 states.
Which states has Dr. Marlene Grenon been licensed in?
Dmand AI has state licenses on file for Dr. Grenon in Arizona (2009 to 2014), California (2010 to 2026) and Texas (2018 to 2019).
Does Dr. Marlene Grenon accept Medicare?
Yes. CMS data shows Dr. Grenon billed Medicare for 43 services in 2019.
What services does Dr. Marlene Grenon bill to Medicare?
In 2019, Dr. Grenon's most billed Medicare services were office visit, established patient (99213) and office visit, new patient (99203).
Where did Dr. Marlene Grenon go to medical school?
Dr. Grenon graduated from McGill University Faculty of Medicine in 2000.
Has Dr. Marlene Grenon received payments from drug or device companies?
CMS Open Payments shows $1,021 in general payments to Dr. Grenon from 2 companies from 2016 to 2018. The largest total came from Terumo Medical Corporation.
Show 4 more questionsShow fewer questions
How long has Dr. Marlene Grenon been practicing?
Dr. Grenon graduated from medical school in 2000, 26 years ago.
Does Dr. Marlene Grenon do research?
Dmand AI links 5 publications to Dr. Grenon, published from 2003 to 2021. Dr. Grenon has worked on 7 clinical trials.
Who does Dr. Marlene Grenon publish with?
Dr. Grenon's most frequent co-authors are Joseph Hopkins Rapp, MD (2 shared papers), Carlos Fares Bechara, MD (1 shared paper) and Jean Bismuth, MD (1 shared paper).
What insurance does Dr. Marlene Grenon accept?
Dr. Grenon is in network with 5 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
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