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Dr. Evan James Diehl, MD
NPI1255626925PAC ID1557585411
- Medicare services, 2024
- 469
- Medicare patients, 2024
- 231
- Part D claims, 2024
- 191
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 1026 a Ave NE, Cedar Rapids, IA 52402
- Practice phone
- Call (319) 369-7211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Diehl's professional email, personal email and mobile number
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Dr. Evan James Diehl is an internist in Cedar Rapids, Iowa
Dr. Diehl practices at UnityPoint Health - St. Luke's Hospital - Cedar Rapids in Cedar Rapids, Iowa, part of UnityPoint Health.
Dr. Diehl's NPI, 1255626925, was assigned on June 10, 2011. Dr. Diehl graduated from University of Iowa, RJ & L Carver College of Medicine in 2011. Dr. Diehl holds Iowa license R9165.
NPI and contact details
- NPI
- 1255626925NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557585411
- NPI enumeration date
- June 10, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (319) 369-7211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Evan James Diehl practices at UnityPoint Health - St. Luke's Hospital - Cedar Rapids in Cedar Rapids, Iowa
Dr. Diehl's primary practice is UnityPoint Health - St. Luke's Hospital - Cedar Rapids, at 1026 a Ave NE, Cedar Rapids, IA 52402 in Linn County. The practice phone is (319) 369-7211.
- UnityPoint Health - St. Luke's Hospital - Cedar Rapids1026 a Ave NE, Cedar Rapids, IA 52402 · Linn CountyPhone(319) 369-7211
Source: Dmand AI Affiliation Data
Dr. Evan James Diehl is affiliated with 1 site of care and 1 medical group
Dr. Diehl's primary practice is UnityPoint Health - St. Luke's Hospital - Cedar Rapids in Cedar Rapids, Iowa, part of UnityPoint Health. The medical group on file is UnityPoint Clinic.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Evan James Diehl's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diehl practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UnityPoint Health - St. Luke's Hospital - Cedar Rapids | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Evan James Diehl is one of 726 internists in Iowa
Internal medicine is Dr. Diehl's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Diehl is licensed in Iowa.
Specialties and state licenses
- Internal medicine, IowaPrimary
Internists near Dr. Diehl
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
726internists in Iowa40internists in Cedar Rapids11internists at UnityPoint Health - St. Luke's Hospital - Cedar Rapids
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Evan James Diehl billed Medicare for 469 services in 2024
CMS data shows 469 Medicare services from Dr. Diehl across 6 procedure codes in 2024, for 231 Medicare patients. Medicare paid $33,712 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024469
Medicare patients231
Paid by Medicare$33,712
Procedure codes6
Dr. Diehl's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4782024: 4692%
Dr. Diehl compared with the Iowa median for internists, 2024
- Dr. Diehl
- Iowa median
- Medicare services
- 469vs 57418% below
- Medicare patients
- 231vs 26011% below
- Part D claims
- 24vs 16786% below
Medians across 689 internists in Iowa with Dmand AI profiles that report each measure.
Dr. Diehl'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.
Need commercial claims for Dr. Diehl?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Diehl and other internists in Iowa.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Evan James Diehl treated 231 Medicare patients in 2024, average age 76
CMS counts 231 Medicare patients who saw Dr. Diehl in 2024. The largest group is 75 to 84, with 86 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 2.35, 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. Diehl's median patient age at 75, with 45% women.
Medicare patients, 2024231
Average age76
Average risk score2.35
Also on Medicaid16%
Dr. Diehl's Medicare patients by age, 2024
Dr. Diehl's Medicare patients by sex, 2024
- Women11449%
- Men11751%
Chronic conditions among Dr. Diehl's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Chronic kidney disease55%
- Heart failure52%
- Ischemic heart disease48%
- Mood disorders46%
- Depression44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Diehl's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Evan James Diehl wrote 191 Medicare Part D claims in 2024
In 2024, Dr. Diehl wrote 191 Medicare Part D claims for 78 patients. 84% of them were for generic drugs. CMS names the drug for 24 of them, across 2 drugs with 11 or more claims each, at $98 in total drug cost. In 2021, CMS named 36 claims across 3 drugs.
Part D claims, 2024191
Drugs named by CMS2
Total drug cost$98
Part D patients78
Dr. Diehl's Part D claims by kind of drug, 2024
- Generic160 claims84%
- Brand-name and other31 claims16%
Dr. Diehl's most prescribed drugs by claims, 2022
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. Diehl's Part D claims, 2024
- Antibiotics14%26 of 191 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 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 362022: 2433%
Drugs named by CMS: 2 in 2022, 3 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
How Dr. Evan James Diehl takes part in Medicare
Dr. Diehl 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. Evan James Diehl has 1 publication on record
Dmand AI links 1 paper to Dr. Diehl in 2013. Dr. Diehl's most frequent co-authors are Michael Hermann Eberlein, MD and Robert Michael Reed, MD.
Papers1
Dr. Diehl's most frequent co-authors
Recent publications by Dr. Diehl
See who Dr. Diehl researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Diehl works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Evan James Diehl received $1,425 in industry payments from 2016 to 2018
CMS Open Payments shows 3 general payments to Dr. Diehl from 2 drug and device companies from 2016 to 2018. Consulting fees make up the largest share, 88% of the total. Allergan Inc. paid the most, $1,352.
General payments to Dr. Diehl by program year, 2016 to 2018
General payments to Dr. Diehl by kind, 2016 to 2018
$1.4Kin total
- Consulting fees$1,25088%
- Food and beverage$17512%
Companies that paid Dr. Diehl the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Evan James Diehl graduated from University of Iowa, RJ & L Carver College of Medicine
Dr. Diehl graduated from University of Iowa, RJ & L Carver College of Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Evan James Diehl'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Evan James Diehl
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. Evan James Diehl's NPI number?
Dr. Evan James Diehl's NPI number is 1255626925. It was assigned on June 10, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Evan James Diehl?
Dr. Evan James Diehl is an internist in Cedar Rapids, Iowa. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Evan James Diehl practice?
Dr. Diehl practices at 1026 a Ave NE, Cedar Rapids, IA 52402. Dr. Diehl's primary practice is UnityPoint Health - St. Luke's Hospital - Cedar Rapids in Cedar Rapids, Iowa, part of UnityPoint Health.
What is Dr. Evan James Diehl's office phone number?
The practice phone on file for Dr. Diehl is (319) 369-7211.
What is Dr. Evan James Diehl's medical license number?
Dr. Diehl holds Iowa license R9165.
Which hospitals is Dr. Evan James Diehl affiliated with?
Dr. Diehl practices at UnityPoint Health - St. Luke's Hospital - Cedar Rapids in Cedar Rapids, Iowa.
What medical group is Dr. Evan James Diehl part of?
Dr. Diehl is linked to UnityPoint Clinic.
Does Dr. Evan James Diehl accept Medicare?
Yes. CMS data shows Dr. Diehl billed Medicare for 469 services in 2024, and Dr. Diehl accepts Medicare assignment.
How many Medicare patients does Dr. Evan James Diehl see?
CMS counts 231 Medicare patients who saw Dr. Diehl in 2024, with an average age of 76.
What services does Dr. Evan James Diehl bill to Medicare?
In 2024, Dr. Diehl's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
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Where did Dr. Evan James Diehl go to medical school?
Dr. Diehl graduated from University of Iowa, RJ & L Carver College of Medicine in 2011.
What drugs does Dr. Evan James Diehl prescribe most?
In 2022 Medicare Part D data, Dr. Diehl's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Cephalexin.
Has Dr. Evan James Diehl received payments from drug or device companies?
CMS Open Payments shows $1,425 in general payments to Dr. Diehl from 2 companies from 2016 to 2018. The largest total came from Allergan Inc.
How long has Dr. Evan James Diehl been practicing?
Dr. Diehl graduated from medical school in 2011, 15 years ago.
Does Dr. Evan James Diehl do research?
Dmand AI links 1 publication to Dr. Diehl.
Who does Dr. Evan James Diehl publish with?
Dr. Diehl's most frequent co-authors are Michael Hermann Eberlein, MD (1 shared paper) and Robert Michael Reed, MD (1 shared paper).
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