Dr. Dennis A. Whitmer, DO
- Medicare services, 2024
- 258
- Medicare patients, 2024
- 177
- Part D claims, 2024
- 129
- Hospital affiliations
- 2
- Industry payments
- $54,456
- Practice address
- 640 South 19th Street, Nevada, IA 50201
- Practice phone
- Call (515) 382-2111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Whitmer's professional email, personal email and mobile number
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Dr. Dennis A. Whitmer is a general surgeon in Nevada, Iowa
Dr. Whitmer practices at Story County Medical Center in Nevada, Iowa, part of Story County, Iowa.
Dr. Whitmer's NPI, 1124134846, was assigned on August 23, 2006. Dr. Whitmer graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1997. Dr. Whitmer holds Iowa license 03173.
- NPI
- 1124134846NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395747224
- NPI enumeration date
- August 23, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (515) 382-2111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dennis A. Whitmer practices at Story County Medical Center in Nevada, Iowa
Dr. Whitmer's primary practice is Story County Medical Center, at 640 South 19th Street, Nevada, IA 50201 in Story County. The practice phone is (515) 382-2111.
- Story County Medical Center640 South 19th Street, Nevada, IA 50201 · Story CountyPhone(515) 382-2111
Source: Dmand AI Affiliation Data
Dr. Dennis A. Whitmer is affiliated with 3 sites of care and 2 medical groups
Dr. Whitmer's primary practice is Story County Medical Center in Nevada, Iowa, part of Story County, Iowa. Dr. Whitmer is also affiliated with MercyOne Des Moines Medical Center. The medical group on file is Story County Medical Center. Dmand AI also links Dr. Whitmer to 1 more group practice or 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 Dr. Dennis A. Whitmer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Whitmer practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Story County Medical Center | Available with a free account |
| +2 more sites 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 Story County, Iowa and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Dennis A. Whitmer is one of 317 general surgeons in Iowa
Surgery is Dr. Whitmer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Whitmer is licensed in Iowa.
Specialties and state licenses
- Surgery, IowaPrimary
General surgeons near Dr. Whitmer
Counts of general surgeons 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. Dennis A. Whitmer billed Medicare for 258 services in 2024
CMS data shows 258 Medicare services from Dr. Whitmer across 7 procedure codes in 2024, for 177 Medicare patients. Medicare paid $28,431 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Whitmer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1972024: 2117%
- Surgery
- 2023: 602024: 4722%
Dr. Whitmer compared with the Iowa median for general surgeons, 2024
- Dr. Whitmer
- Iowa median
- Medicare services
- 258vs 16457% above
- Medicare patients
- 177vs 14621% above
- Part D claims
- 86vs 432.0 times
Medians across 332 general surgeons in Iowa with Dmand AI profiles that report each measure.
Dr. Whitmer'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. Whitmer and other general surgeons in Iowa.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dennis A. Whitmer treated 177 Medicare patients in 2024, average age 73
CMS counts 177 Medicare patients who saw Dr. Whitmer in 2024. The largest group is 65 to 74, with 92 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.20, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Whitmer's median patient age at 61, with 52% women.
Dr. Whitmer's Medicare patients by age, 2024
Dr. Whitmer's Medicare patients by sex, 2024
- Women8548%
- Men9252%
Chronic conditions among Dr. Whitmer's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis40%
- Diabetes27%
- Ischemic heart disease25%
- Anxiety24%
- Mood disorders24%
- Cancer23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Whitmer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dennis A. Whitmer wrote 129 Medicare Part D claims in 2024
In 2024, Dr. Whitmer wrote 129 Medicare Part D claims for 65 patients. 98% of them were for generic drugs. CMS names the drug for 86 of them, across 5 drugs with 11 or more claims each, at $1,080 in total drug cost. In 2023, CMS named 157 claims across 3 drugs.
Dr. Whitmer's Part D claims by kind of drug, 2024
- Generic127 claims98%
- Brand-name and other2 claims2%
Dr. Whitmer'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. Whitmer's Part D claims, 2024
- Opioids43%55 of 129 claims
- Antibiotics26%33 of 129 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1572024: 8645%
Drugs named by CMS: 5 in 2024, 3 in 2023.
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. Dennis A. Whitmer ranks in the 90th percentile for hernia repair (minimally invasive) in Medicare
Dr. Whitmer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 22 procedures of hernia repair (minimally invasive) by Dr. Whitmer, more than 90% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Whitmer ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 90th percentile22 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Dennis A. Whitmer received $54,456 in industry payments from 2016 to 2025
CMS Open Payments shows 259 general payments to Dr. Whitmer from 12 drug and device companies from 2016 to 2025. Education make up the largest share, 53% of the total. Intuitive Surgical, Inc. paid the most, $49,034.
General payments to Dr. Whitmer by program year, 2016 to 2025
General payments to Dr. Whitmer by kind, 2016 to 2025
- Education$29,00053%
- Food and beverage$10,66320%
- Travel and lodging$9,52317%
- Speaker and faculty fees$5,0009%
- Gifts$2690%
Companies that paid Dr. Whitmer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Dennis A. Whitmer graduated from Des Moines University of Osteopathic Medicine and Health Sciences
Dr. Whitmer graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Dennis A. Whitmer'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)Doctors and Clinicians Utilization Data (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. Dennis A. Whitmer
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. Dennis A. Whitmer's NPI number?
Dr. Dennis A. Whitmer's NPI number is 1124134846. It was assigned on August 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Dennis A. Whitmer?
Dr. Dennis A. Whitmer is a general surgeon in Nevada, Iowa. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Dennis A. Whitmer practice?
Dr. Whitmer practices at 640 South 19th Street, Nevada, IA 50201. Dr. Whitmer's primary practice is Story County Medical Center in Nevada, Iowa, part of Story County, Iowa. Dmand AI also links Dr. Whitmer to 1 group practice or clinic and 1 medical group.
What is Dr. Dennis A. Whitmer's office phone number?
The practice phone on file for Dr. Whitmer is (515) 382-2111.
What is Dr. Dennis A. Whitmer's medical license number?
Dr. Whitmer holds Iowa license 03173.
Which hospitals is Dr. Dennis A. Whitmer affiliated with?
Dr. Whitmer practices at Story County Medical Center in Nevada, Iowa. Dr. Whitmer is also affiliated with MercyOne Des Moines Medical Center.
What medical group is Dr. Dennis A. Whitmer part of?
Dr. Whitmer is linked to Story County Medical Center. Dmand AI links Dr. Whitmer to 1 more medical group.
Does Dr. Dennis A. Whitmer accept Medicare?
Yes. CMS data shows Dr. Whitmer billed Medicare for 258 services in 2024, and Dr. Whitmer accepts Medicare assignment.
How many Medicare patients does Dr. Dennis A. Whitmer see?
CMS counts 177 Medicare patients who saw Dr. Whitmer in 2024, with an average age of 73.
What services does Dr. Dennis A. Whitmer bill to Medicare?
In 2024, Dr. Whitmer's most billed Medicare services were office visit, new patient (99203), office visit, established patient (99213) and hospital inpatient care (99231).
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Where did Dr. Dennis A. Whitmer go to medical school?
Dr. Whitmer graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1997.
What drugs does Dr. Dennis A. Whitmer prescribe most?
In 2024 Medicare Part D data, Dr. Whitmer's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Oxycodone HCl and Sulfamethoxazole-Trimethoprim.
Has Dr. Dennis A. Whitmer received payments from drug or device companies?
CMS Open Payments shows $54,456 in general payments to Dr. Whitmer from 12 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Dennis A. Whitmer been practicing?
Dr. Whitmer graduated from medical school in 1997, 29 years ago.
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