Dr. Brian Walker, MD
- Medicare services, 2018
- 149
- Part D claims, 2018
- 38
- Publications
- 191
- Clinical trials
- 1
- Industry payments
- $158
- Practice address
- 13847 E 14th St, San Leandro, CA 94578-2632
- Practice phone
- Call (510) 352-8400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Walker'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. Brian Walker is a general surgeon in San Leandro, California
Dr. Walker practices in San Leandro, California.
Dr. Walker's NPI, 1306834957, was assigned on October 7, 2005. Dr. Walker graduated from University of Kansas School of Medicine - Kansas City in 1979. Dr. Walker's California license number on file is G43347.
- NPI
- 1306834957NPI Registry (opens in a new tab)
- NPI enumeration date
- October 7, 2005
- NPI status
- Active
- Practice phone
- (510) 352-8400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Brian Walker's practice address is in San Leandro, California
Dr. Walker's practice address in the NPI Registry is 13847 E 14th St, San Leandro, CA 94578-2632. The practice phone is (510) 352-8400.
- NPI Registry address13847 E 14th St, San Leandro, CA 94578-2632Phone(510) 352-8400
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Brian Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Walker's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian Walker is one of 2,926 general surgeons in California
Surgery is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Walker is board certified in surgery by the American Board of Surgery. Dr. Walker has a license on file in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
General surgeons near Dr. Walker
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. Brian Walker billed Medicare for 149 services in 2018
CMS data shows 149 Medicare services from Dr. Walker across 4 procedure codes in 2018, all of them office visits. Medicare paid $14,783 for them. Every service was in an office.
Dr. Walker's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 2832018: 14947%
- Surgery
- 2017: 132018: 0100%
Dr. Walker compared with the California median for general surgeons, 2018
- Dr. Walker
- California median
- Medicare services
- 149vs 16610% below
- Part D claims
- 38vs 3412% above
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Walker's most billed Medicare procedure codes, 2018
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. Walker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Walker and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian Walker wrote 38 Medicare Part D claims in 2018
In 2018, Dr. Walker wrote 38 Medicare Part D claims. They cover 2 drugs, with $487 in total drug cost. In 2017, CMS named 31 claims across 1 drug.
Dr. Walker's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 312018: 3823%
Drugs named by CMS: 2 in 2018, 1 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Brian Walker has 191 publications on record
Dmand AI links 191 papers to Dr. Walker, published from 2004 to 2025. 2016 was the busiest year, with 13. The most frequent topics are Hydrocortisone, Glucocorticoids and Adipose Tissue. Dr. Walker has published most often in J Clin Endocrinol Metab. Dr. Walker's most frequent co-authors are Scott L. Barrett, MD, Caroline Jane Diorio, MD and Hakon Hakonarson, MD.
Dr. Walker's papers by year, 2016 to 2025
Topics Dr. Walker writes about most
- Hydrocortisone
- Glucocorticoids
- Adipose Tissue
- Obesity
- Insulin Resistance
- Liver
- Hypothalamo-Hypophyseal System
- Mice, Inbred C57BL
Dr. Walker's most frequent co-authors
- Scott L. Barrett, MD6 shared papers
- Caroline Jane Diorio, MD2 shared papers
- Hakon Hakonarson, MD2 shared papers
Recent publications by Dr. Walker
Biosci Rep
See who Dr. Walker researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Walker 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. Brian Walker has worked on 1 clinical trial
Dmand AI links Dr. Walker to 1 clinical trial. Conditions studied include Menorrhagia and Menstruation Disturbances.
Conditions in Dr. Walker's trials
- Menorrhagia
- Menstruation Disturbances
Recent clinical trials with Dr. Walker
Developmental Clinical Studies - Reversing Endometrial Glucocorticoid Deficiency in Heavy Menstrual Bleeding (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Brian Walker received $158 in industry payments from 2016 to 2018
CMS Open Payments shows 8 general payments to Dr. Walker from 8 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Focal Therapeutics, Inc. paid the most, $57.
General payments to Dr. Walker by program year, 2016 to 2018
Companies that paid Dr. Walker 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. Brian Walker has 1 award and honors on record
Dmand AI lists 1 award for Dr. Walker.
Awards and honors for Dr. Walker
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. Brian Walker graduated from University of Kansas School of Medicine - Kansas City
Dr. Walker graduated from University of Kansas School of Medicine - Kansas City in 1979. Dr. Walker is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Brian Walker accepts plans from 4 insurance carriers
Dr. Walker is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
Plan types Dr. Walker accepts, by number of carriers
- Medicare4
- PPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Brian Walker'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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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 |
| 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) |
| 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. Brian Walker
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. Brian Walker's NPI number?
Dr. Brian Walker's NPI number is 1306834957. It was assigned on October 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian Walker?
Dr. Brian Walker is a general surgeon in San Leandro, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Brian Walker practice?
Dr. Walker practices at 13847 E 14th St, San Leandro, CA 94578-2632.
What is Dr. Brian Walker's office phone number?
The practice phone on file for Dr. Walker is (510) 352-8400. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Brian Walker's email address?
Dmand AI checks professional and personal email addresses for Dr. Walker through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Brian Walker's medical license number?
Dr. Walker's California license number on file is G43347.
Does Dr. Brian Walker accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 149 services in 2018.
Is Dr. Brian Walker board certified?
Yes. Dr. Walker is board certified in surgery by the American Board of Surgery.
What services does Dr. Brian Walker bill to Medicare?
In 2018, Dr. Walker's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99205).
Where did Dr. Brian Walker go to medical school?
Dr. Walker graduated from University of Kansas School of Medicine - Kansas City in 1979.
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What drugs does Dr. Brian Walker prescribe most?
In 2018 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Levothyroxine Sodium.
Has Dr. Brian Walker received payments from drug or device companies?
CMS Open Payments shows $158 in general payments to Dr. Walker from 8 companies from 2016 to 2018. The largest total came from Focal Therapeutics, Inc.
How long has Dr. Brian Walker been practicing?
Dr. Walker graduated from medical school in 1979, 47 years ago.
Does Dr. Brian Walker do research?
Dmand AI links 191 publications to Dr. Walker, published from 2004 to 2025. Dr. Walker has worked on 1 clinical trial.
Who does Dr. Brian Walker publish with?
Dr. Walker's most frequent co-authors are Scott L. Barrett, MD (6 shared papers), Caroline Jane Diorio, MD (2 shared papers) and Hakon Hakonarson, MD (2 shared papers).
What EHR does Dr. Brian Walker's practice use?
Dmand AI tracks the EHR system at Dr. Walker's practice. The vendor and product are available with a free Dmand AI account.
What insurance does Dr. Brian Walker accept?
Dr. Walker is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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