Body WeightFentanylHeart Defects, Congenital
Dr. Gregory B. Hammer, MD
NPI1396885455
- Publications
- 101
- Industry payments
- $18,477
- Insurance carriers
- 2
- State licenses
- 3
- Year NPI issued
- 2007
- Practice address
- 300 Pasteur Dr, Stanford, CA 94305
- Practice phone
- Call (650) 723-7835
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Hammer'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. Gregory B. Hammer is an anesthesiologist in Stanford, California
Dr. Hammer practices in Stanford, California.
Dr. Hammer's NPI, 1396885455, was assigned on February 7, 2007. Dr. Hammer graduated from University of Illinois College of Medicine - Chicago in 1982. Dr. Hammer holds California license G51413.
NPI and contact details
- NPI
- 1396885455NPI Registry (opens in a new tab)
- NPI enumeration date
- February 7, 2007
- NPI status
- Active
- Practice phone
- (650) 723-7835
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Gregory B. Hammer's practice address is in Stanford, California
Dr. Hammer's practice address in the NPI Registry is 300 Pasteur Dr, Stanford, CA 94305, in Santa Clara County. The practice phone is (650) 723-7835.
- NPI Registry address300 Pasteur Dr, Stanford, CA 94305 · Santa Clara CountyPhone(650) 723-7835
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Gregory B. Hammer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hammer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Hammer's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory B. Hammer is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Hammer's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Hammer is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Hammer's licenses on file in 3 states: California, Florida and Pennsylvania.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Florida license
- Pennsylvania license
Anesthesiologists near Dr. Hammer
Counts of anesthesiologists 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. Gregory B. Hammer has 101 publications on record
Dmand AI links 101 papers to Dr. Hammer, published from 2008 to 2024. 2021 was the busiest year, with 7. The most frequent topics are Cardiac Surgical Procedures, Intubation, Intratracheal and Anesthesia. Dr. Hammer has published most often in Paediatr Anaesth. Dr. Hammer's most frequent co-authors are David R. Drover, MD, Scott Reid Schulman, MD and Felice Su, MD.
Papers101
Years published2008 to 2024
Dr. Hammer's papers by year, 2010 to 2024
Topics Dr. Hammer writes about most
- Cardiac Surgical Procedures
- Intubation, Intratracheal
- Anesthesia
- Dexmedetomidine
- Hypnotics and Sedatives
- Respiration, Artificial
- Liver Transplantation
- Models, Biological
Dr. Hammer's most frequent co-authors
- David R. Drover, MD26 shared papers
- Scott Reid Schulman, MD6 shared papers
- Felice Su, MD6 shared papers
Recent publications by Dr. Hammer
Paediatr Anaesth
AnaphylaxisAnestheticsBradycardia
See who Dr. Hammer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hammer works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gregory B. Hammer received $18,477 in industry payments from 2017 to 2023
CMS Open Payments shows 22 general payments to Dr. Hammer from 7 drug and device companies from 2017 to 2023. Speaker and faculty fees make up the largest share, 57% of the total. Trevena, Inc. paid the most, $5,024. It also lists 3 research payments totaling $7,530 from 2021 to 2023.
General payments to Dr. Hammer by program year, 2017 to 2023
General payments to Dr. Hammer by kind, 2017 to 2023
$18.5Kin total
- Speaker and faculty fees$10,45057%
- Consulting fees$6,28334%
- Travel and lodging$1,3067%
- Food and beverage$4372%
Companies that paid Dr. Hammer the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory B. Hammer has 7 awards and honors on record
Dmand AI lists 7 awards for Dr. Hammer, most recently Graduated with Honors in 1982.
Awards and honors for Dr. Hammer
- 1982
- Graduated with Honors
- 1979
- Alpha Omega Alpha
- 1976
- Goessling Merit Scholarship
- Honor Society of Phi Kappa Phi
- 1975
- Gamma Sigma Delta Award of Merit
- Undated
- Best Doctors in America
Source: Dmand AI Professional Profile Data
Dr. Gregory B. Hammer graduated from University of Illinois College of Medicine - Chicago
Dr. Hammer graduated from University of Illinois College of Medicine - Chicago in 1982.
- Medical school
- Board certified in anesthesiology
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Gregory B. Hammer accepts plans from 2 insurance carriers
Dr. Hammer is in network with 2 carriers, including AK State Medicaid and NV State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
- AK State Medicaid
- NV State Medicaid
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory B. Hammer'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 |
| 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. Gregory B. Hammer
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. Gregory B. Hammer's NPI number?
Dr. Gregory B. Hammer's NPI number is 1396885455. It was assigned on February 7, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory B. Hammer?
Dr. Gregory B. Hammer is an anesthesiologist in Stanford, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Gregory B. Hammer practice?
Dr. Hammer practices at 300 Pasteur Dr, Stanford, CA 94305.
What is Dr. Gregory B. Hammer's office phone number?
The practice phone on file for Dr. Hammer is (650) 723-7835.
What is Dr. Gregory B. Hammer's medical license number?
Dr. Hammer holds California license G51413, one of the licenses on file in 3 states.
Which states has Dr. Gregory B. Hammer been licensed in?
Dmand AI has state licenses on file for Dr. Hammer in California (1983 to 2027), Florida (2011 to 2018) and Pennsylvania (1987 to 1988).
Is Dr. Gregory B. Hammer board certified?
Yes. Dr. Hammer is board certified in anesthesiology by the American Board of Anesthesiology.
Where did Dr. Gregory B. Hammer go to medical school?
Dr. Hammer graduated from University of Illinois College of Medicine - Chicago in 1982.
Has Dr. Gregory B. Hammer received payments from drug or device companies?
CMS Open Payments shows $18,477 in general payments to Dr. Hammer from 7 companies from 2017 to 2023. The largest total came from Trevena, Inc.
How long has Dr. Gregory B. Hammer been practicing?
Dr. Hammer graduated from medical school in 1982, 44 years ago.
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Does Dr. Gregory B. Hammer do research?
Dmand AI links 101 publications to Dr. Hammer, published from 2008 to 2024.
Who does Dr. Gregory B. Hammer publish with?
Dr. Hammer's most frequent co-authors are David R. Drover, MD (26 shared papers), Scott Reid Schulman, MD (6 shared papers) and Felice Su, MD (6 shared papers).
What insurance does Dr. Gregory B. Hammer accept?
Dr. Hammer is in network with 2 carriers, including AK State Medicaid and NV State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
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