Anesthesia, ObstetricalAnesthesia, SpinalCesarean Section
Dr. Willard Lee Frederickson, MD
NPI1821082140
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $22
- Medical groups
- 2
- State license
- 1
- Practice address
- 1 Quality Drive, Vacaville, CA 95688
- Practice phone
- Call (707) 624-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Frederickson'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. Willard Lee Frederickson is an anesthesiologist in Vacaville, California
Dr. Frederickson practices at Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente.
Dr. Frederickson's NPI, 1821082140, was assigned on August 31, 2005. Dr. Frederickson graduated from UC Davis School of Medicine in 1993. Dr. Frederickson holds California license G79707.
NPI and contact details
- NPI
- 1821082140NPI Registry (opens in a new tab)
- NPI enumeration date
- August 31, 2005
- NPI status
- Active
- Practice phone
- (707) 624-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Willard Lee Frederickson practices at Vacaville Medical Center in Vacaville, California
Dr. Frederickson's primary practice is Vacaville Medical Center, at 1 Quality Drive, Vacaville, CA 95688 in Solano County. The practice phone is (707) 624-4000.
- Vacaville Medical Center1 Quality Drive, Vacaville, CA 95688 · Solano CountyPhone(707) 624-4000
Source: Dmand AI Affiliation Data
Dr. Willard Lee Frederickson is affiliated with 4 sites of care and 2 medical groups
Dr. Frederickson's primary practice is Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Frederickson to 2 more group practices and clinics, 1 clinical lab and 1 medical group, each named with a free account.
The Permanente Medical Group, Inc.2 group practices and clinicsNames with a free account1 clinical labName with a free account1 medical groupName with a free account
See all 6 affiliations for Dr. FredericksonSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Willard Lee Frederickson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Frederickson practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vacaville Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Willard Lee Frederickson is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Frederickson's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Frederickson is board certified in anesthesiology by the American Board of Anesthesiology. Dr. Frederickson is licensed in California.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
Anesthesiologists near Dr. Frederickson
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
6,593anesthesiologists in California13anesthesiologists in Vacaville7anesthesiologists at Vacaville Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Willard Lee Frederickson's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Frederickson's median patient age at 50, with 0% women.
Dr. Frederickson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Willard Lee Frederickson has 2 publications on record
Dmand AI links 2 papers to Dr. Frederickson. The most frequent topics are Hydrogen-Ion Concentration. Dr. Frederickson's most frequent co-authors are Sheila E. Cohen, MD and Edward Riley, MD.
Papers2
Topics Dr. Frederickson writes about most
- Hydrogen-Ion Concentration
Dr. Frederickson's most frequent co-authors
Recent publications by Dr. Frederickson
Allosteric RegulationEscherichia coliFructosediphosphates
See who Dr. Frederickson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Frederickson 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. Willard Lee Frederickson received $22 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Frederickson from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Halyard Health, Inc. paid the most, $22.
Companies that paid Dr. Frederickson the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Willard Lee Frederickson graduated from UC Davis School of Medicine
Dr. Frederickson graduated from UC Davis School of Medicine in 1993.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Sources for Dr. Willard Lee Frederickson'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 patients and the all-payer patient panel | Dmand AI Patient Panel 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Willard Lee Frederickson
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. Willard Lee Frederickson's NPI number?
Dr. Willard Lee Frederickson's NPI number is 1821082140. It was assigned on August 31, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Willard Lee Frederickson?
Dr. Willard Lee Frederickson is an anesthesiologist in Vacaville, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Willard Lee Frederickson practice?
Dr. Frederickson practices at 1 Quality Drive, Vacaville, CA 95688. Dr. Frederickson's primary practice is Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente. Dmand AI also links Dr. Frederickson to 2 group practices and clinics, 1 clinical lab and 1 medical group.
What is Dr. Willard Lee Frederickson's office phone number?
The practice phone on file for Dr. Frederickson is (707) 624-4000.
What is Dr. Willard Lee Frederickson's medical license number?
Dr. Frederickson holds California license G79707.
Which hospitals is Dr. Willard Lee Frederickson affiliated with?
Dr. Frederickson practices at Vacaville Medical Center in Vacaville, California.
What medical group is Dr. Willard Lee Frederickson part of?
Dr. Frederickson is linked to The Permanente Medical Group, Inc. Dmand AI links Dr. Frederickson to 1 more medical group.
Is Dr. Willard Lee Frederickson board certified?
Yes. Dr. Frederickson is board certified in anesthesiology by the American Board of Anesthesiology.
Where did Dr. Willard Lee Frederickson go to medical school?
Dr. Frederickson graduated from UC Davis School of Medicine in 1993.
Has Dr. Willard Lee Frederickson received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Dr. Frederickson from 1 company from 2017 to 2017. The largest total came from Halyard Health, Inc.
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How long has Dr. Willard Lee Frederickson been practicing?
Dr. Frederickson graduated from medical school in 1993, 33 years ago.
Does Dr. Willard Lee Frederickson do research?
Dmand AI links 2 publications to Dr. Frederickson.
Who does Dr. Willard Lee Frederickson publish with?
Dr. Frederickson's most frequent co-authors are Sheila E. Cohen, MD (1 shared paper) and Edward Riley, MD (1 shared paper).
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