Dr. Brian A. Kellert, DO
- Part D claims, 2019
- 12
- Publications
- 5
- Industry payments
- $50
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 110 Tampico, Walnut Creek, CA 94598
- Practice phone
- Call (925) 891-9033
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Diablo Valley Perinatal Associates, Inc
Walnut Creek, California
Find Dr. Kellert'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 A. Kellert is an OB-GYN in Walnut Creek, California
Dr. Kellert practices at Diablo Valley Perinatal Associates, Inc in Walnut Creek, California.
Dr. Kellert's NPI, 1215224761, was assigned on July 6, 2011. Dr. Kellert graduated from WesternU College of Osteopathic Medicine of the Pacific in 2011. Dr. Kellert holds California license 20A15787.
- NPI
- 1215224761NPI Registry (opens in a new tab)
- NPI enumeration date
- July 6, 2011
- NPI status
- Active
- Practice phone
- (925) 891-9033
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Brian A. Kellert practices at Diablo Valley Perinatal Associates, Inc in Walnut Creek, California
Dr. Kellert's primary practice is Diablo Valley Perinatal Associates, Inc, at 110 Tampico, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 891-9033.
- Diablo Valley Perinatal Associates, Inc110 Tampico, Walnut Creek, CA 94598 · Contra Costa CountyPhone(925) 891-9033
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Brian A. Kellert is affiliated with 2 sites of care and 1 medical group
Dr. Kellert's primary practice is Diablo Valley Perinatal Associates, Inc in Walnut Creek, California. The medical group on file is Diablo Valley Perinatal Associates. Dmand AI also links Dr. Kellert to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Brian A. Kellert's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kellert practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Diablo Valley Perinatal Associates, Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian A. Kellert is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Kellert's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Kellert is board certified in maternal-fetal medicine by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Kellert's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
- Ohio license
OB-GYNs near Dr. Kellert
Counts of OB-GYNs 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 A. Kellert's patients have a median age of 36
Across all payers, Dmand AI patient panel data puts Dr. Kellert's median patient age at 36, with 97% women.
Dr. Kellert's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women97%
- Men1%
Source: Dmand AI Patient Panel Data
Dr. Brian A. Kellert wrote 12 Medicare Part D claims in 2019
In 2019, Dr. Kellert wrote 12 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $296 in total drug cost. In 2017, CMS named 11 claims across 1 drug.
Dr. Kellert's most prescribed drugs by claims, 2019
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 2019
- 2017
- 2019
- Claims for drugs CMS names
- 2017: 112019: 129%
Drugs named by CMS: 1 in 2019, 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 A. Kellert has 5 publications on record
Dmand AI links 5 papers to Dr. Kellert, published from 2009 to 2018. Dr. Kellert's most frequent co-authors are Catalin Sorin Buhimschi, MD, Michelle Caster, MD and Nathalie Maitre, MD.
Dr. Kellert's papers by year, 2009 to 2018
Dr. Kellert's most frequent co-authors
- Catalin Sorin Buhimschi, MD1 shared paper
- Michelle Caster, MD1 shared paper
- Nathalie Maitre, MD1 shared paper
Recent publications by Dr. Kellert
Eur J Pharmacol
Comparison of Cerebral Palsy Severity Between 2 Eras of Antenatal Magnesium Use (opens in a new tab)
JAMA Pediatr
See who Dr. Kellert researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kellert works with, so you can find a warm path to the right OB-GYNs.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Brian A. Kellert received $50 in industry payments from 2019 to 2023
CMS Open Payments shows 2 general payments to Dr. Kellert from 2 drug and device companies from 2019 to 2023. Food and beverage make up the largest share, 58% of the total. Pfizer Inc. paid the most, $29.
General payments to Dr. Kellert by program year, 2019 to 2023
General payments to Dr. Kellert by kind, 2019 to 2023
- Food and beverage$2958%
- Education$2142%
Companies that paid Dr. Kellert the most, 2019 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Brian A. Kellert graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Kellert graduated from WesternU College of Osteopathic Medicine of the Pacific in 2011.
- Medical school
- Board certified in maternal-fetal medicine
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Brian A. Kellert accepts plans from 10 insurance carriers
Dr. Kellert is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- United Healthcare
- Aspirus Health Plan
- +2 more carriersWith a free account
Plan types Dr. Kellert accepts, by number of carriers
- Medicare8
- PPO6
- POS5
- HMO4
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Brian A. Kellert'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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 |
| 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. Brian A. Kellert
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 A. Kellert's NPI number?
Dr. Brian A. Kellert's NPI number is 1215224761. It was assigned on July 6, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian A. Kellert?
Dr. Brian A. Kellert is an OB-GYN in Walnut Creek, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Brian A. Kellert practice?
Dr. Kellert practices at 110 Tampico, Walnut Creek, CA 94598. Dr. Kellert's primary practice is Diablo Valley Perinatal Associates, Inc in Walnut Creek, California. Dmand AI also links Dr. Kellert to 1 group practice or clinic.
What is Dr. Brian A. Kellert's office phone number?
The practice phone on file for Dr. Kellert is (925) 891-9033.
What is Dr. Brian A. Kellert's medical license number?
Dr. Kellert holds California license 20A15787, one of the licenses on file in 2 states.
Which states has Dr. Brian A. Kellert been licensed in?
Dmand AI has state licenses on file for Dr. Kellert in California (2017 to 2026) and Ohio (2011 to 2026).
What medical group is Dr. Brian A. Kellert part of?
Dr. Kellert is linked to Diablo Valley Perinatal Associates.
Is Dr. Brian A. Kellert board certified?
Yes. Dr. Kellert is board certified in maternal-fetal medicine by the American Board of Obstetrics and Gynecology.
Where did Dr. Brian A. Kellert go to medical school?
Dr. Kellert graduated from WesternU College of Osteopathic Medicine of the Pacific in 2011.
What drugs does Dr. Brian A. Kellert prescribe most?
In 2019 Medicare Part D data, Dr. Kellert's most prescribed drugs by claims were Azithromycin.
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Has Dr. Brian A. Kellert received payments from drug or device companies?
CMS Open Payments shows $50 in general payments to Dr. Kellert from 2 companies from 2019 to 2023. The largest total came from Pfizer Inc.
How long has Dr. Brian A. Kellert been practicing?
Dr. Kellert graduated from medical school in 2011, 15 years ago.
Does Dr. Brian A. Kellert do research?
Dmand AI links 5 publications to Dr. Kellert, published from 2009 to 2018.
Who does Dr. Brian A. Kellert publish with?
Dr. Kellert's most frequent co-authors are Catalin Sorin Buhimschi, MD (1 shared paper), Michelle Caster, MD (1 shared paper) and Nathalie Maitre, MD (1 shared paper).
What insurance does Dr. Brian A. Kellert accept?
Dr. Kellert is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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