Dr. Christopher J. Johnson, MD
- Medicare services, 2024
- 4,397
- Medicare patients, 2024
- 2,124
- Hospital affiliations
- 4
- Industry payments
- $453
- Medical group
- 1
- Practice address
- 1215 Duff Ave, Ames, IA 50010
- Practice phone
- Call (515) 239-4436
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
McFarland Clinic - 1215 Duff Avenue Office
Mammography / Breast Imaging Center · Ames, Iowa
Find Dr. Johnson'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 J. Johnson is a clinical pathology/laboratory medicine physician in Ames, Iowa
Dr. Johnson practices at McFarland Clinic - 1215 Duff Avenue Office in Ames, Iowa.
Dr. Johnson's NPI, 1316987878, was assigned on June 6, 2006. Dr. Johnson graduated from University of Iowa, RJ & L Carver College of Medicine in 2001. Dr. Johnson holds Iowa license 35985.
- NPI
- 1316987878NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153325162
- NPI enumeration date
- June 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (515) 239-4436
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher J. Johnson practices at McFarland Clinic - 1215 Duff Avenue Office in Ames, Iowa
Dr. Johnson's primary practice is McFarland Clinic - 1215 Duff Avenue Office, at 1215 Duff Ave, Ames, IA 50010. The practice phone is (515) 239-4436.
- McFarland Clinic - 1215 Duff Avenue Office1215 Duff Ave, Ames, IA 50010Phone(515) 239-4436
Source: Dmand AI Affiliation Data
Dr. Christopher J. Johnson is affiliated with 6 sites of care and 1 medical group
Dr. Johnson's primary practice is McFarland Clinic - 1215 Duff Avenue Office in Ames, Iowa. Dr. Johnson is also affiliated with Mary Greeley Medical Center. The medical group on file is McFarland Clinic. Dmand AI also links Dr. Johnson to 3 more hospitals and 1 group practice or clinic, each named with a free account. Dr. Johnson's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christopher J. Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| McFarland Clinic - 1215 Duff Avenue Office | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher J. Johnson is one of 8 clinical pathology/laboratory medicine physicians in Iowa
Clinical pathology/laboratory medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207ZP0105X. Dr. Johnson is licensed in Iowa.
Specialties and state licenses
- Clinical pathology/laboratory medicine, IowaPrimary
Clinical pathology/laboratory medicine physicians near Dr. Johnson
Counts of clinical pathology/laboratory 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 J. Johnson billed Medicare for 4,397 services in 2024
CMS data shows 4,397 Medicare services from Dr. Johnson across 26 procedure codes in 2024, for 2,124 Medicare patients. Medicare paid $134,283 for them.
Dr. Johnson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 4,2652024: 4,1722%
- Other services
- 2023: 2562024: 22512%
Where Dr. Johnson's Medicare services took place, 2024
- In an office2,12948%
- In a facility2,26852%
Dr. Johnson'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. Johnson and other clinical pathology/laboratory medicine physicians in Iowa.
Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. Christopher J. Johnson treated 2,124 Medicare patients in 2024, average age 74
CMS counts 2,124 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 1,052 patients. 75% of them have high cholesterol, and 70% have high blood pressure. 5% are also on Medicaid. Their average risk score is 1.22, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 47, with 82% women.
Dr. Johnson's Medicare patients by age, 2024
Dr. Johnson's Medicare patients by sex, 2024
- Women1,14854%
- Men97646%
Chronic conditions among Dr. Johnson's Medicare patients, 2024
- High cholesterol75%
- High blood pressure70%
- Arthritis40%
- Diabetes25%
- Chronic kidney disease24%
- Cancer23%
- Ischemic heart disease21%
- Mood disorders21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women82%
- Men18%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Christopher J. Johnson takes part in Medicare
Dr. Johnson 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 J. Johnson received $453 in industry payments from 2018 to 2024
CMS Open Payments shows 2 general payments to Dr. Johnson from 2 drug and device companies from 2018 to 2024. Consulting fees make up the largest share, 97% of the total. Alcon Research Ltd paid the most, $440.
General payments to Dr. Johnson by program year, 2018 to 2024
General payments to Dr. Johnson by kind, 2018 to 2024
- Consulting fees$44097%
- Food and beverage$133%
Companies that paid Dr. Johnson the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher J. Johnson graduated from University of Iowa, RJ & L Carver College of Medicine
Dr. Johnson graduated from University of Iowa, RJ & L Carver College of Medicine in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher J. Johnson'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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 |
| 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 J. Johnson
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 J. Johnson's NPI number?
Dr. Christopher J. Johnson's NPI number is 1316987878. It was assigned on June 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher J. Johnson?
Dr. Christopher J. Johnson is a clinical pathology/laboratory medicine physician in Ames, Iowa. The primary specialty in the NPI Registry is Clinical Pathology/Laboratory Medicine Physician (taxonomy code 207ZP0105X).
Where does Dr. Christopher J. Johnson practice?
Dr. Johnson practices at 1215 Duff Ave, Ames, IA 50010. Dr. Johnson's primary practice is McFarland Clinic - 1215 Duff Avenue Office in Ames, Iowa. Dmand AI also links Dr. Johnson to 3 hospitals and 1 group practice or clinic.
What is Dr. Christopher J. Johnson's office phone number?
The practice phone on file for Dr. Johnson is (515) 239-4436.
What is Dr. Christopher J. Johnson's medical license number?
Dr. Johnson holds Iowa license 35985.
Which hospitals is Dr. Christopher J. Johnson affiliated with?
Dr. Johnson is affiliated with Mary Greeley Medical Center. Dmand AI links Dr. Johnson to 3 more hospitals.
What medical group is Dr. Christopher J. Johnson part of?
Dr. Johnson is linked to McFarland Clinic.
Does Dr. Christopher J. Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 4,397 services in 2024, and Dr. Johnson accepts Medicare assignment.
How many Medicare patients does Dr. Christopher J. Johnson see?
CMS counts 2,124 Medicare patients who saw Dr. Johnson in 2024, with an average age of 74.
What services does Dr. Christopher J. Johnson bill to Medicare?
In 2024, Dr. Johnson's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (84165).
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Where did Dr. Christopher J. Johnson go to medical school?
Dr. Johnson graduated from University of Iowa, RJ & L Carver College of Medicine in 2001.
Has Dr. Christopher J. Johnson received payments from drug or device companies?
CMS Open Payments shows $453 in general payments to Dr. Johnson from 2 companies from 2018 to 2024. The largest total came from Alcon Research Ltd.
How long has Dr. Christopher J. Johnson been practicing?
Dr. Johnson graduated from medical school in 2001, 25 years ago.
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