Ann Otol Rhinol Laryngol
Aorta, ThoracicCarcinoma, Papillary, FollicularDiGeorge Syndrome
Dr. Henry Richard Diggelmann, MD
NPI1467610196PAC ID4082856059
- Medicare services, 2024
- 1,416
- Medicare patients, 2024
- 590
- Part D claims, 2024
- 442
- Publications
- 6
- Hospital affiliations
- 6
- Practice address
- 1000 Fourth Street SW, Mason City, IA 50401
- Practice phone
- Call (641) 428-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Diggelmann'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. Henry Richard Diggelmann is an otolaryngologist in Mason City, Iowa
Dr. Diggelmann practices at MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health.
Dr. Diggelmann's NPI, 1467610196, was assigned on May 29, 2008. Dr. Diggelmann graduated from University of Iowa, RJ & L Carver College of Medicine in 2008. Dr. Diggelmann holds Iowa license MD40670.
NPI and contact details
- NPI
- 1467610196NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082856059
- NPI enumeration date
- May 29, 2008
- NPI status
- Active
- Practice phone
- (641) 428-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Henry Richard Diggelmann practices at MercyOne North Iowa Medical Center in Mason City, Iowa
Dr. Diggelmann's primary practice is MercyOne North Iowa Medical Center, at 1000 Fourth Street SW, Mason City, IA 50401 in Cerro Gordo County. The practice phone is (641) 428-7000.
- MercyOne North Iowa Medical Center1000 Fourth Street SW, Mason City, IA 50401 · Cerro Gordo CountyPhone(641) 428-7000
Source: Dmand AI Affiliation Data
Dr. Henry Richard Diggelmann is affiliated with 9 sites of care and 4 medical groups
Dr. Diggelmann's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. Dr. Diggelmann is also affiliated with Hancock County Health System. The medical group on file is MercyOne North Iowa Anesthesia Professional Services. Dmand AI also links Dr. Diggelmann to 4 more hospitals, 3 medical groups, 2 group practices and clinics and 1 hospice, each named with a free account.
Hancock County Health SystemMercyOne North Iowa Anesthesia Professional Services4 hospitalsNames with a free account3 medical groupsNames with a free account2 group practices and clinicsNames with a free account1 hospiceName with a free account
See all 13 affiliations for Dr. DiggelmannSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Henry Richard Diggelmann's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diggelmann practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MercyOne North Iowa Medical Center | Available with a free account |
| +8 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Henry Richard Diggelmann is one of 105 otolaryngologists in Iowa
Otolaryngology is Dr. Diggelmann's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dr. Diggelmann is licensed in Iowa.
Specialties and state licenses
- Otolaryngology, IowaPrimary
Otolaryngologists near Dr. Diggelmann
Counts of otolaryngologists with a Dmand AI profile, by place and practice. Each opens the list.
105otolaryngologists in Iowa
3otolaryngologists in Mason City
3otolaryngologists at MercyOne North Iowa Medical CenterSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Henry Richard Diggelmann billed Medicare for 1,416 services in 2024
CMS data shows 1,416 Medicare services from Dr. Diggelmann across 14 procedure codes in 2024, for 590 Medicare patients. Medicare paid $83,015 for them.
Medicare services, 20241,416
Medicare patients590
Paid by Medicare$83,015
Procedure codes14
Dr. Diggelmann's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7532024: 6958%
- Surgery
- 2023: 6592024: 6068%
- Tests and treatments
- 2023: 1402024: 10426%
- Imaging
- 2023: 122024: 118%
Where Dr. Diggelmann's Medicare services took place, 2024
- In an office43831%
- In a facility97869%
Dr. Diggelmann compared with the Iowa median for otolaryngologists, 2024
- Dr. Diggelmann
- Iowa median
- Medicare services
- 1,416vs 6012.4 times
- Medicare patients
- 590vs 31985% above
- Part D claims
- 366vs 1043.5 times
Medians across 110 otolaryngologists in Iowa with Dmand AI profiles that report each measure.
Dr. Diggelmann'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. Diggelmann and other otolaryngologists in Iowa.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Henry Richard Diggelmann treated 590 Medicare patients in 2024, average age 75
CMS counts 590 Medicare patients who saw Dr. Diggelmann in 2024. The largest group is 65 to 74, with 264 patients. 73% of them have high blood pressure, and 73% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Diggelmann's median patient age at 61, with 49% women.
Medicare patients, 2024590
Average age75
Average risk score1.07
Also on Medicaid7%
Dr. Diggelmann's Medicare patients by age, 2024
Dr. Diggelmann's Medicare patients by sex, 2024
- Women30852%
- Men28248%
Chronic conditions among Dr. Diggelmann's Medicare patients, 2024
- High blood pressure73%
- High cholesterol73%
- Arthritis43%
- Diabetes26%
- Ischemic heart disease26%
- Chronic kidney disease21%
- Mood disorders20%
- Anxiety19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Diggelmann'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
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Henry Richard Diggelmann wrote 442 Medicare Part D claims in 2024
In 2024, Dr. Diggelmann wrote 442 Medicare Part D claims for 256 patients. 98% of them were for generic drugs. CMS names the drug for 366 of them, across 12 drugs with 11 or more claims each, at $5,745 in total drug cost. In 2023, CMS named 398 claims across 14 drugs.
Part D claims, 2024442
Drugs named by CMS12
Total drug cost$5,745
Part D patients256
Dr. Diggelmann's Part D claims by kind of drug, 2024
- Generic432 claims98%
- Brand-name and other10 claims2%
Dr. Diggelmann'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. Diggelmann's Part D claims, 2024
- Antibiotics32%142 of 442 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: 3982024: 3668%
Drugs named by CMS: 12 in 2024, 14 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. Henry Richard Diggelmann ranks in the 87th percentile for melanoma (skin cancer) excision in Medicare
CMS counts 55 procedures of melanoma (skin cancer) excision by Dr. Diggelmann, more than 87% of the clinicians it reports for that procedure.
Where Dr. Diggelmann ranks in Medicare procedure volume
- Melanoma (skin cancer) excision
- 87th percentile55 procedures
- Skin biopsy
- 65th percentile27 procedures
- Removal of skin lesions
- 63rd percentile16 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Source: Doctors and Clinicians Utilization Data (CMS)
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Dr. Henry Richard Diggelmann has 6 publications on record
Dmand AI links 6 papers to Dr. Diggelmann, published from 2012 to 2017. 2013 was the busiest year, with 2. Dr. Diggelmann has published most often in Ann Otol Rhinol Laryngol. Dr. Diggelmann's most frequent co-authors are Henry T. Hoffman, MD, Grant S. Hamilton, MD and Xiaoyang Hua, MD.
Papers6
Years published2012 to 2017
Dr. Diggelmann's papers by year, 2012 to 2017
Dr. Diggelmann's most frequent co-authors
- Henry T. Hoffman, MD3 shared papers
- Grant S. Hamilton, MD1 shared paper
- Xiaoyang Hua, MD1 shared paper
Recent publications by Dr. Diggelmann
Ann Otol Rhinol Laryngol
Acellular DermisDimethylpolysiloxanesNasal Septal Perforation
DebridementEquipment DesignLaryngoscopy
See who Dr. Diggelmann researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Diggelmann works with, so you can find a warm path to the right otolaryngologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Henry Richard Diggelmann received $615 in industry payments from 2016 to 2025
CMS Open Payments shows 32 general payments to Dr. Diggelmann from 15 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $155.
General payments to Dr. Diggelmann by program year, 2016 to 2025
Companies that paid Dr. Diggelmann 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. Henry Richard Diggelmann graduated from University of Iowa, RJ & L Carver College of Medicine
Dr. Diggelmann graduated from University of Iowa, RJ & L Carver College of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Henry Richard Diggelmann'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 Utilization Data (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. Henry Richard Diggelmann
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. Henry Richard Diggelmann's NPI number?
Dr. Henry Richard Diggelmann's NPI number is 1467610196. It was assigned on May 29, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Henry Richard Diggelmann?
Dr. Henry Richard Diggelmann is an otolaryngologist in Mason City, Iowa. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. Henry Richard Diggelmann practice?
Dr. Diggelmann practices at 1000 Fourth Street SW, Mason City, IA 50401. Dr. Diggelmann's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. Dmand AI also links Dr. Diggelmann to 4 hospitals, 3 medical groups, 2 group practices and clinics and 1 hospice.
What is Dr. Henry Richard Diggelmann's office phone number?
The practice phone on file for Dr. Diggelmann is (641) 428-7000.
What is Dr. Henry Richard Diggelmann's medical license number?
Dr. Diggelmann holds Iowa license MD40670.
Which hospitals is Dr. Henry Richard Diggelmann affiliated with?
Dr. Diggelmann practices at MercyOne North Iowa Medical Center in Mason City, Iowa. Dr. Diggelmann is also affiliated with Hancock County Health System. Dmand AI links Dr. Diggelmann to 4 more hospitals.
What medical group is Dr. Henry Richard Diggelmann part of?
Dr. Diggelmann is linked to MercyOne North Iowa Anesthesia Professional Services. Dmand AI links Dr. Diggelmann to 3 more medical groups.
Does Dr. Henry Richard Diggelmann accept Medicare?
Yes. CMS data shows Dr. Diggelmann billed Medicare for 1,416 services in 2024.
How many Medicare patients does Dr. Henry Richard Diggelmann see?
CMS counts 590 Medicare patients who saw Dr. Diggelmann in 2024, with an average age of 75.
What services does Dr. Henry Richard Diggelmann bill to Medicare?
In 2024, Dr. Diggelmann's most billed Medicare services were office visit, established patient (99213), surgery: ear (69210) and office visit, new patient (99203).
Show 6 more questionsShow fewer questions
Where did Dr. Henry Richard Diggelmann go to medical school?
Dr. Diggelmann graduated from University of Iowa, RJ & L Carver College of Medicine in 2008.
What drugs does Dr. Henry Richard Diggelmann prescribe most?
In 2024 Medicare Part D data, Dr. Diggelmann's most prescribed drugs by claims were Mupirocin, Fluticasone Propionate and Amoxicillin-Clavulanate Potass.
Has Dr. Henry Richard Diggelmann received payments from drug or device companies?
CMS Open Payments shows $615 in general payments to Dr. Diggelmann from 15 companies from 2016 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Henry Richard Diggelmann been practicing?
Dr. Diggelmann graduated from medical school in 2008, 18 years ago.
Does Dr. Henry Richard Diggelmann do research?
Dmand AI links 6 publications to Dr. Diggelmann, published from 2012 to 2017.
Who does Dr. Henry Richard Diggelmann publish with?
Dr. Diggelmann's most frequent co-authors are Henry T. Hoffman, MD (3 shared papers), Grant S. Hamilton, MD (1 shared paper) and Xiaoyang Hua, MD (1 shared paper).
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