Dr. Frederick Johnson, MD
- Medicare services, 2024
- 241
- Medicare patients, 2024
- 218
- Part D claims, 2024
- 225
- Hospital affiliations
- 2
- Medical groups
- 7
- Practice address
- 1200 West Mohave Road, Parker, AZ 85344
- Practice phone
- Call (928) 669-9201
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Frederick Johnson is an emergency medicine physician in Parker, Arizona
Dr. Johnson practices at La Paz Regional Hospital in Parker, Arizona, part of La Paz Regional Hospital.
Dr. Johnson's NPI, 1891780029, was assigned on September 14, 2005. Dr. Johnson graduated from Northwestern University Feinberg Medical School in 1976. Dr. Johnson holds Indiana license 01028913.
- NPI
- 1891780029NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911988647
- NPI enumeration date
- September 14, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (928) 669-9201
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Frederick Johnson practices at La Paz Regional Hospital in Parker, Arizona
Dr. Johnson's primary practice is La Paz Regional Hospital, at 1200 West Mohave Road, Parker, AZ 85344 in Lapaz County. The practice phone is (928) 669-9201.
- La Paz Regional Hospital1200 West Mohave Road, Parker, AZ 85344 · Lapaz CountyPhone(928) 669-9201
Source: Dmand AI Affiliation Data
Dr. Frederick Johnson is affiliated with 2 sites of care and 7 medical groups
Dr. Johnson's primary practice is La Paz Regional Hospital in Parker, Arizona, part of La Paz Regional Hospital. Dr. Johnson is also affiliated with Exceptional Community Hospital Bullhead City. The medical group on file is Sunset Emergency Physicians. Dmand AI also links Dr. Johnson to 6 more medical groups, 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. Frederick Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| La Paz Regional Hospital | Available with a free account |
| +1 more site and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across La Paz Regional Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Frederick Johnson is one of 1,360 emergency medicine physicians in Arizona
Emergency medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Johnson is licensed in Indiana.
Specialties and state licenses
- Emergency medicine, IndianaPrimary
Emergency medicine physicians near Dr. Johnson
Counts of emergency 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. Frederick Johnson billed Medicare for 241 services in 2024
CMS data shows 241 Medicare services from Dr. Johnson across 5 procedure codes in 2024, for 218 Medicare patients. Medicare paid $18,575 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Johnson's Medicare services by type, 2021 to 2024
- 2021
- 2024
- Office and hospital visits
- 2021: 1792024: 21721%
- Tests and treatments
- 2021: 02024: 24
Dr. Johnson compared with the Arizona median for emergency medicine physicians, 2024
- Dr. Johnson
- Arizona median
- Medicare services
- 241vs 21612% above
- Medicare patients
- 218vs 210Close to median
- Part D claims
- 96vs 5092% above
Medians across 1,326 emergency medicine physicians in Arizona with Dmand AI profiles that report each measure.
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Frederick Johnson treated 218 Medicare patients in 2024, average age 75
CMS counts 218 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 100 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.37, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 63, with 55% women.
Dr. Johnson's Medicare patients by age, 2024
Dr. Johnson's Medicare patients by sex, 2024
- Women11653%
- Men10247%
Chronic conditions among Dr. Johnson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Ischemic heart disease35%
- Diabetes31%
- Atrial fibrillation28%
- COPD28%
- Anxiety25%
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 63
Patient panel by sex, all payers
- Women55%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Frederick Johnson wrote 225 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 225 Medicare Part D claims for 167 patients. 94% of them were for generic drugs. CMS names the drug for 96 of them, across 4 drugs with 11 or more claims each, at $602 in total drug cost. In 2021, CMS named 76 claims across 4 drugs.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic211 claims94%
- Brand-name14 claims6%
Dr. Johnson'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.
Drug classes CMS tracks in Dr. Johnson's Part D claims, 2024
- Opioids13%29 of 225 claims
- Antibiotics42%94 of 225 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2021 to 2024
- 2021
- 2024
- Claims for drugs CMS names
- 2021: 762024: 9626%
Drugs named by CMS: 4 in 2024, 4 in 2021.
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
Dr. Frederick Johnson scored 0 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 0 out of 100 for Dr. Johnson for performance year 2024, reported as part of a virtual group. Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Johnson's MIPS scores, performance year 2024
- 0of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 0of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Frederick Johnson graduated from Northwestern University Feinberg Medical School
Dr. Johnson graduated from Northwestern University Feinberg Medical School in 1976.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Frederick 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) |
| 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) |
| 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)Clinician Public Reporting: Overall MIPS Performance (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. Frederick 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. Frederick Johnson's NPI number?
Dr. Frederick Johnson's NPI number is 1891780029. It was assigned on September 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Frederick Johnson?
Dr. Frederick Johnson is an emergency medicine physician in Parker, Arizona. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Frederick Johnson practice?
Dr. Johnson practices at 1200 West Mohave Road, Parker, AZ 85344. Dr. Johnson's primary practice is La Paz Regional Hospital in Parker, Arizona, part of La Paz Regional Hospital. Dmand AI also links Dr. Johnson to 6 medical groups.
What is Dr. Frederick Johnson's office phone number?
The practice phone on file for Dr. Johnson is (928) 669-9201.
What is Dr. Frederick Johnson's medical license number?
Dr. Johnson holds Indiana license 01028913.
Which hospitals is Dr. Frederick Johnson affiliated with?
Dr. Johnson practices at La Paz Regional Hospital in Parker, Arizona. Dr. Johnson is also affiliated with Exceptional Community Hospital Bullhead City.
What medical group is Dr. Frederick Johnson part of?
Dr. Johnson is linked to Sunset Emergency Physicians. Dmand AI links Dr. Johnson to 6 more medical groups.
Does Dr. Frederick Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 241 services in 2024, and Dr. Johnson accepts Medicare assignment.
What is Dr. Frederick Johnson's MIPS score?
Dr. Johnson's MIPS final score for performance year 2024 is 0 out of 100, reported as part of a virtual group.
How many Medicare patients does Dr. Frederick Johnson see?
CMS counts 218 Medicare patients who saw Dr. Johnson in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Frederick Johnson bill to Medicare?
In 2024, Dr. Johnson's most billed Medicare services were emergency department visit (99284), emergency department visit (99283) and emergency department visit (99285).
Where did Dr. Frederick Johnson go to medical school?
Dr. Johnson graduated from Northwestern University Feinberg Medical School in 1976.
What drugs does Dr. Frederick Johnson prescribe most?
In 2024 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Levofloxacin, Tramadol HCl and Cephalexin.
How long has Dr. Frederick Johnson been practicing?
Dr. Johnson graduated from medical school in 1976, 50 years ago.
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