Katheryn M. Johnston, FNP-C
- Medicare patients, 2024
- 256
- Part D claims, 2024
- 1,388
- Hospital affiliations
- 1
- Industry payments
- $15
- Medical groups
- 2
- Practice address
- 2200 East Show Low Lake Road, Show Low, AZ 85901
- Practice phone
- Call (928) 537-4375
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Katheryn Johnston'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.
Katheryn M. Johnston is a family nurse practitioner in Show Low, Arizona
Katheryn Johnston practices at Summit Healthcare Regional Medical Center in Show Low, Arizona, part of Summit Healthcare.
Katheryn Johnston's NPI, 1083262620, was assigned on August 27, 2019. Katheryn Johnston holds Arizona license 225636.
- NPI
- 1083262620NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345572459
- NPI enumeration date
- August 27, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (928) 537-4375
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Katheryn M. Johnston practices at Summit Healthcare Regional Medical Center in Show Low, Arizona
Katheryn Johnston's primary practice is Summit Healthcare Regional Medical Center, at 2200 East Show Low Lake Road, Show Low, AZ 85901 in Navajo County. The practice phone is (928) 537-4375.
- Summit Healthcare Regional Medical Center2200 East Show Low Lake Road, Show Low, AZ 85901 · Navajo CountyPhone(928) 537-4375
Source: Dmand AI Affiliation Data
Katheryn M. Johnston is affiliated with 2 sites of care and 2 medical groups
Katheryn Johnston's primary practice is Summit Healthcare Regional Medical Center in Show Low, Arizona, part of Summit Healthcare. The medical group on file is Summit Healthcare. Dmand AI also links Katheryn Johnston to 1 more rural health clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Katheryn M. Johnston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Katheryn Johnston practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Summit Healthcare Regional Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Summit Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Katheryn M. Johnston is one of 6,007 family nurse practitioners in Arizona
Family is Katheryn Johnston's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Katheryn Johnston is licensed in Arizona.
Specialties and state licenses
- Family nurse practitioner, ArizonaPrimary
Family nurse practitioners near Katheryn Johnston
Counts of family nurse practitioners 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
Katheryn M. Johnston treated 256 Medicare patients in 2024, average age 74
CMS counts 256 Medicare patients who saw Katheryn Johnston in 2024. The largest group is 65 to 74, with 123 patients. 68% of them have high blood pressure, and 67% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Katheryn Johnston's median patient age at 71, with 66% women.
Katheryn Johnston's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Katheryn Johnston's Medicare patients by sex, 2024
- Women15259%
- Men10441%
Chronic conditions among Katheryn Johnston's Medicare patients, 2024
- High blood pressure68%
- High cholesterol67%
- Arthritis59%
- Ischemic heart disease23%
- Mood disorders23%
- Depression21%
- Diabetes21%
- Chronic kidney disease20%
Share of Medicare patients with each condition. A patient can have several.
Katheryn Johnston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women66%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Katheryn M. Johnston wrote 1,388 Medicare Part D claims in 2024
In 2024, Katheryn Johnston wrote 1,388 Medicare Part D claims for 320 patients. 89% of them were for generic drugs.
Katheryn Johnston's Part D claims by kind of drug, 2024
- Generic1,236 claims89%
- Brand-name and other152 claims11%
Drug classes CMS tracks in Katheryn Johnston's Part D claims, 2024
- Opioids5%71 of 1,388 claims
- Antibiotics14%195 of 1,388 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Katheryn M. Johnston takes part in Medicare
Katheryn Johnston 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)
For MedTech and pharma teams
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Katheryn M. Johnston received $15 in industry payments in 2025
CMS Open Payments shows 1 general payment to Katheryn Johnston from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $15.
Companies that paid Katheryn Johnston the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Katheryn M. Johnston'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | 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) |
| 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 Katheryn M. Johnston
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Katheryn M. Johnston's NPI number?
Katheryn M. Johnston's NPI number is 1083262620. It was assigned on August 27, 2019, and it is active in the NPI Registry.
What does Katheryn M. Johnston specialize in?
Katheryn M. Johnston is a family nurse practitioner in Show Low, Arizona. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Katheryn M. Johnston practice?
Katheryn Johnston practices at 2200 East Show Low Lake Road, Show Low, AZ 85901. Katheryn Johnston's primary practice is Summit Healthcare Regional Medical Center in Show Low, Arizona, part of Summit Healthcare. Dmand AI also links Katheryn Johnston to 1 rural health clinic and 1 medical group.
What is Katheryn M. Johnston's office phone number?
The practice phone on file for Katheryn Johnston is (928) 537-4375.
What is Katheryn M. Johnston's medical license number?
Katheryn Johnston holds Arizona license 225636.
Which hospitals is Katheryn M. Johnston affiliated with?
Katheryn Johnston practices at Summit Healthcare Regional Medical Center in Show Low, Arizona.
What medical group is Katheryn M. Johnston part of?
Katheryn Johnston is linked to Summit Healthcare. Dmand AI links Katheryn Johnston to 1 more medical group.
Does Katheryn M. Johnston accept Medicare?
Yes. CMS lists Katheryn Johnston as accepting Medicare assignment.
How many Medicare patients does Katheryn M. Johnston see?
CMS counts 256 Medicare patients who saw Katheryn Johnston in 2024, with an average age of 74.
Has Katheryn M. Johnston received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to Katheryn Johnston from 1 company from 2025 to 2025. The largest total came from Novo Nordisk Inc.
How long has Katheryn M. Johnston been practicing?
Katheryn Johnston graduated from medical school in 2019, 7 years ago.
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