David William Haas, DC
- Medicare patients, 2024
- 119
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 1403 S Federal Ave, Mason City, IA 50401
- Practice phone
- Call (641) 424-6531
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dr Richard W Haas Chiropractor
Mason City, Iowa
Find David Haas' 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.
David William Haas is a chiropractor in Mason City, Iowa
David Haas practices at Dr Richard W Haas Chiropractor in Mason City, Iowa.
David Haas' NPI, 1366454332, was assigned on August 11, 2006. David Haas graduated from Northwestern College of Chiropractic in 2004. David Haas holds Iowa license 06802.
- NPI
- 1366454332NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254351257
- NPI enumeration date
- August 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (641) 424-6531
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
David William Haas practices at Dr Richard W Haas Chiropractor in Mason City, Iowa
David Haas' primary practice is Dr Richard W Haas Chiropractor, at 1403 S Federal Ave, Mason City, IA 50401 in Cerro Gordo County. The practice phone is (641) 424-6531.
- Dr Richard W Haas Chiropractor1403 S Federal Ave, Mason City, IA 50401 · Cerro Gordo CountyPhone(641) 424-6531
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
David William Haas is affiliated with 2 sites of care and 1 medical group
David Haas' primary practice is Dr Richard W Haas Chiropractor in Mason City, Iowa. Dmand AI also links David Haas to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at David William Haas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Haas practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr Richard W Haas Chiropractor | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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David William Haas is one of 1,248 chiropractors in Iowa
Chiropractor is David Haas' primary specialty in the NPI Registry, under taxonomy code 111N00000X. David Haas is licensed in Iowa.
Specialties and state licenses
- Chiropractor, IowaPrimary
Chiropractors near David Haas
Counts of chiropractors 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
David William Haas treated 119 Medicare patients in 2024, average age 72
CMS counts 119 Medicare patients who saw David Haas in 2024. The largest group is 65 to 74, with 69 patients. 69% of them have high blood pressure, and 66% have high cholesterol. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Haas' median patient age at 57, with 59% women.
David Haas' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
David Haas' Medicare patients by sex, 2024
- Women7765%
- Men4235%
Chronic conditions among David Haas' Medicare patients, 2024
- High blood pressure69%
- High cholesterol66%
- Arthritis64%
- Mood disorders28%
- Depression26%
- Diabetes24%
- Anxiety23%
- Ischemic heart disease17%
Share of Medicare patients with each condition. A patient can have several.
David Haas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How David William Haas takes part in Medicare
David Haas 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)
David William Haas graduated from Northwestern College of Chiropractic
David Haas graduated from Northwestern College of Chiropractic in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for David William Haas'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 David William Haas
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is David William Haas' NPI number?
David William Haas' NPI number is 1366454332. It was assigned on August 11, 2006, and it is active in the NPI Registry.
What does David William Haas specialize in?
David William Haas is a chiropractor in Mason City, Iowa. The primary specialty in the NPI Registry is Chiropractor (taxonomy code 111N00000X).
Where does David William Haas practice?
David Haas practices at 1403 S Federal Ave, Mason City, IA 50401. David Haas' primary practice is Dr Richard W Haas Chiropractor in Mason City, Iowa. Dmand AI also links David Haas to 1 group practice or clinic and 1 medical group.
What is David William Haas' office phone number?
The practice phone on file for David Haas is (641) 424-6531.
What is David William Haas' medical license number?
David Haas holds Iowa license 06802.
Does David William Haas accept Medicare?
Yes. CMS lists David Haas as accepting Medicare assignment.
How many Medicare patients does David William Haas see?
CMS counts 119 Medicare patients who saw David Haas in 2024, with an average age of 72.
Where did David William Haas go to medical school?
David Haas graduated from Northwestern College of Chiropractic in 2004.
How long has David William Haas been practicing?
David Haas graduated from medical school in 2004, 22 years ago.
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