Dr. Christopher William Walker, MD
- Part D claims, 2024
- 28
- Hospital affiliations
- 1
- Industry payments
- $159
- Medical group
- 1
- Insurance carriers
- 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. 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. Christopher William Walker is a family medicine physician in Vacaville, California
Dr. Walker practices at Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente.
Dr. Walker's NPI, 1851372130, was assigned on November 14, 2005. Dr. Walker graduated from Uniformed Services University, F. Edward Hebert School of Medicine in 1998. Dr. Walker holds Indiana license 01054419A.
- NPI
- 1851372130NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123198652
- NPI enumeration date
- November 14, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 624-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher William Walker practices at Vacaville Medical Center in Vacaville, California
Dr. Walker'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. Christopher William Walker is affiliated with 2 sites of care and 1 medical group
Dr. Walker'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. Walker to 1 more clinical lab, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christopher William Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices, 2 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 |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher William Walker is one of 15,680 family medicine physicians in California
Family medicine is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Walker is board certified in family medicine by the American Board of Family Medicine. Dmand AI has Dr. Walker's licenses on file in 2 states: Indiana and California.
Specialties and state licenses
- Family medicine, IndianaPrimary
- California license
Clinical focus
Dmand AI lists heart failure among the conditions Dr. Walker treats.
Family medicine physicians near Dr. Walker
Counts of family medicine physicians 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. Christopher William Walker's patients have a median age of 36
Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 36, with 43% women.
Dr. Walker'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
- Women43%
- Men57%
Source: Dmand AI Patient Panel Data
Dr. Christopher William Walker wrote 28 Medicare Part D claims in 2024
In 2024, Dr. Walker wrote 28 Medicare Part D claims for 25 patients. 54% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $612 in total drug cost. In 2019, CMS named 12 claims across 1 drug.
Dr. Walker's Part D claims by kind of drug, 2024
- Generic15 claims54%
- Brand-name13 claims46%
Dr. Walker's most prescribed drugs by claims, 2024
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, 2019 to 2024
- 2019
- 2024
- Claims for drugs CMS names
- 2019: 122024: 12No change
Drugs named by CMS: 1 in 2024, 1 in 2019.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Christopher William Walker takes part in Medicare
Dr. Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Christopher William Walker received $159 in industry payments from 2016 to 2021
CMS Open Payments shows 8 general payments to Dr. Walker from 2 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $145.
General payments to Dr. Walker by program year, 2016 to 2021
Companies that paid Dr. Walker the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher William Walker graduated from Uniformed Services University, F. Edward Hebert School of Medicine
Dr. Walker graduated from Uniformed Services University, F. Edward Hebert School of Medicine in 1998.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Christopher William Walker accepts plans from 1 insurance carrier
Dr. Walker is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Walker accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Christopher William 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 | 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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (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. Christopher William 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. Christopher William Walker's NPI number?
Dr. Christopher William Walker's NPI number is 1851372130. It was assigned on November 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher William Walker?
Dr. Christopher William Walker is a family medicine physician in Vacaville, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Christopher William Walker practice?
Dr. Walker practices at 1 Quality Drive, Vacaville, CA 95688. Dr. Walker's primary practice is Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente. Dmand AI also links Dr. Walker to 1 clinical lab.
What is Dr. Christopher William Walker's office phone number?
The practice phone on file for Dr. Walker is (707) 624-4000.
What is Dr. Christopher William Walker's medical license number?
Dr. Walker holds Indiana license 01054419A, one of the licenses on file in 2 states.
Which states has Dr. Christopher William Walker been licensed in?
Dmand AI has state licenses on file for Dr. Walker in Indiana and California (2000 to 2027).
Which hospitals is Dr. Christopher William Walker affiliated with?
Dr. Walker practices at Vacaville Medical Center in Vacaville, California.
What medical group is Dr. Christopher William Walker part of?
Dr. Walker is linked to The Permanente Medical Group, Inc.
Does Dr. Christopher William Walker accept Medicare?
Yes. CMS lists Dr. Walker as accepting Medicare assignment.
Is Dr. Christopher William Walker board certified?
Yes. Dr. Walker is board certified in family medicine by the American Board of Family Medicine.
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Where did Dr. Christopher William Walker go to medical school?
Dr. Walker graduated from Uniformed Services University, F. Edward Hebert School of Medicine in 1998.
What drugs does Dr. Christopher William Walker prescribe most?
In 2024 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Adacel Tdap.
Has Dr. Christopher William Walker received payments from drug or device companies?
CMS Open Payments shows $159 in general payments to Dr. Walker from 2 companies from 2016 to 2021. The largest total came from Allergan Inc.
How long has Dr. Christopher William Walker been practicing?
Dr. Walker graduated from medical school in 1998, 28 years ago.
What insurance does Dr. Christopher William Walker accept?
Dr. Walker is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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