Dr. Christopher Mark John, DO
- Medicare services, 2024
- 2,252
- Medicare patients, 2024
- 1,556
- Hospital affiliations
- 11
- Industry payments
- $23
- Medical groups
- 38
- Practice address
- 401 W Poplar St, Walla Walla, WA 99362
- Practice phone
- Call (509) 522-5900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. John'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 Mark John is a diagnostic radiologist in Apple Valley, California
Dr. John practices at Providence St. Mary Medical Center in Walla Walla, Washington, part of Providence Health & Services.
Dr. John's NPI, 1669679569, was assigned on July 3, 2007. Dr. John graduated from Midwestern University, Chicago College of Osteopathic Med in 2006. Dr. John holds California license 20A20771.
- NPI
- 1669679569NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002047370
- NPI enumeration date
- July 3, 2007
- NPI status
- Active
- Practice phone
- (509) 522-5900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Christopher Mark John practices in Walla Walla and Apple Valley
Dr. John's primary practice is Providence St. Mary Medical Center, at 401 W Poplar St, Walla Walla, WA 99362 in Walla Walla County. The practice phone is (509) 522-5900. Dr. John also practices at Providence St Mary Medical Center, 18300 Hwy 18, Apple Valley, CA 92307.
- Providence St. Mary Medical CenterPrimary401 W Poplar St, Walla Walla, WA 99362 · Walla Walla CountyPhone(509) 522-5900
- Providence St Mary Medical Center18300 Hwy 18, Apple Valley, CA 92307 · San Bernardino CountyPhone(760) 242-2311
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Christopher Mark John is affiliated with 19 sites of care and 38 medical groups
Dr. John's primary practice is Providence St. Mary Medical Center in Walla Walla, Washington, part of Providence Health & Services. Dr. John is also affiliated with Providence St. Mary Medical Center. The medical group on file is Riverside Radiology Medical Group, Inc. Dmand AI also links Dr. John to 9 more hospitals, 37 medical groups and 8 group practices and clinics, each 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 Mark John's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. John practices, 19 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence St. Mary Medical Center | Available with a free account |
| +18 more sites and 37 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher Mark John is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. John's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dmand AI has Dr. John's licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
- Texas license
Diagnostic radiologists near Dr. John
Counts of diagnostic radiologists 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 Mark John billed Medicare for 2,252 services in 2024
CMS data shows 2,252 Medicare services from Dr. John across 25 procedure codes in 2024, for 1,556 Medicare patients. Medicare paid $81,978 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. John's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,7072024: 2,18928%
- Tests and treatments
- 2023: 732024: 6314%
Dr. John compared with the California median for diagnostic radiologists, 2024
- Dr. John
- California median
- Medicare services
- 2,252vs 2,281Close to median
- Medicare patients
- 1,556vs 1,34616% above
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. John's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. John and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christopher Mark John treated 1,556 Medicare patients in 2024, average age 73
CMS counts 1,556 Medicare patients who saw Dr. John in 2024. The largest group is 65 to 74, with 529 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 37% are also on Medicaid. Their average risk score is 2.10, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. John's median patient age at 49, with 58% women.
Dr. John's Medicare patients by age, 2024
Dr. John's Medicare patients by sex, 2024
- Women86656%
- Men69044%
Chronic conditions among Dr. John's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Mood disorders46%
- Anxiety44%
- Depression43%
- Diabetes43%
- Chronic kidney disease40%
Share of Medicare patients with each condition. A patient can have several.
Dr. John's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
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Dr. Christopher Mark John received $23 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. John from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Bausch Health Americas, Inc. paid the most, $23.
Companies that paid Dr. John the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher Mark John graduated from Midwestern University, Chicago College of Osteopathic Med
Dr. John graduated from Midwestern University, Chicago College of Osteopathic Med in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher Mark John'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 Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (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 |
| 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 Mark John
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 Mark John's NPI number?
Dr. Christopher Mark John's NPI number is 1669679569. It was assigned on July 3, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher Mark John?
Dr. Christopher Mark John is a diagnostic radiologist in Apple Valley, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Christopher Mark John practice?
Dr. John practices at 401 W Poplar St, Walla Walla, WA 99362. Dr. John also practices at 18300 Hwy 18, Apple Valley, CA 92307. Dr. John's primary practice is Providence St. Mary Medical Center in Walla Walla, Washington, part of Providence Health & Services. Dmand AI also links Dr. John to 9 hospitals, 37 medical groups and 8 group practices and clinics.
What is Dr. Christopher Mark John's office phone number?
The practice phone on file for Dr. John is (509) 522-5900.
What is Dr. Christopher Mark John's medical license number?
Dr. John holds California license 20A20771, one of the licenses on file in 2 states.
Which states has Dr. Christopher Mark John been licensed in?
Dmand AI has state licenses on file for Dr. John in California and Texas.
Which hospitals is Dr. Christopher Mark John affiliated with?
Dr. John practices at Providence St. Mary Medical Center in Walla Walla, Washington. Dr. John is also affiliated with Providence St. Mary Medical Center. Dmand AI links Dr. John to 9 more hospitals.
What medical group is Dr. Christopher Mark John part of?
Dr. John is linked to Riverside Radiology Medical Group, Inc. Dmand AI links Dr. John to 37 more medical groups.
Does Dr. Christopher Mark John accept Medicare?
Yes. CMS data shows Dr. John billed Medicare for 2,252 services in 2024.
How many Medicare patients does Dr. Christopher Mark John see?
CMS counts 1,556 Medicare patients who saw Dr. John in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. Christopher Mark John bill to Medicare?
In 2024, Dr. John's most billed Medicare services were diagnostic imaging (70450), diagnostic imaging (72125) and diagnostic imaging (71045).
Where did Dr. Christopher Mark John go to medical school?
Dr. John graduated from Midwestern University, Chicago College of Osteopathic Med in 2006.
Has Dr. Christopher Mark John received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Dr. John from 1 company from 2024 to 2024. The largest total came from Bausch Health Americas, Inc.
How long has Dr. Christopher Mark John been practicing?
Dr. John graduated from medical school in 2006, 20 years ago.
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