Gregory J. Shirk, DC
- Medicare patients, 2024
- 149
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 630 1st St Nw, Mason City, IA 50401-2947
- Practice phone
- Call (641) 423-4455
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Acute Care Chiropractic
Physician office · Mason City, Iowa
Find Gregory Shirk'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.
Gregory J. Shirk is a chiropractor in Mason City, Iowa
Gregory Shirk practices at Acute Care Chiropractic in Mason City, Iowa.
Gregory Shirk's NPI, 1629064464, was assigned on September 27, 2005. Gregory Shirk graduated from Palmer College Chiropractic - Davenport in 1995. Gregory Shirk holds Iowa license A05882.
- NPI
- 1629064464NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244130532
- NPI enumeration date
- September 27, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (641) 423-4455
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory J. Shirk practices at Acute Care Chiropractic in Mason City, Iowa
Gregory Shirk's primary practice is Acute Care Chiropractic, at 630 1st St Nw, Mason City, IA 50401-2947. The practice phone is (641) 423-4455.
- Acute Care Chiropractic630 1st St Nw, Mason City, IA 50401-2947Phone(641) 423-4455
Source: Dmand AI Affiliation Data
Gregory J. Shirk is affiliated with 1 site of care
Gregory Shirk's primary practice is Acute Care Chiropractic in Mason City, Iowa.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Gregory J. Shirk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Shirk practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Acute Care Chiropractic | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory J. Shirk is one of 1,248 chiropractors in Iowa
Chiropractor is Gregory Shirk's primary specialty in the NPI Registry, under taxonomy code 111N00000X. Gregory Shirk is licensed in Iowa.
Specialties and state licenses
- Chiropractor, IowaPrimary
Chiropractors near Gregory Shirk
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
Gregory J. Shirk treated 149 Medicare patients in 2024, average age 75
CMS counts 149 Medicare patients who saw Gregory Shirk in 2024. The largest group is 65 to 74, with 64 patients. 75% of them have high cholesterol, and 72% have high blood pressure. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory Shirk's median patient age at 65, with 54% women.
Gregory Shirk's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gregory Shirk's Medicare patients by sex, 2024
- Women9866%
- Men5134%
Chronic conditions among Gregory Shirk's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis55%
- Depression23%
- Mood disorders23%
- Anxiety21%
- Chronic kidney disease21%
- Diabetes21%
Share of Medicare patients with each condition. A patient can have several.
Gregory Shirk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Gregory J. Shirk takes part in Medicare
Gregory Shirk 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)
Gregory J. Shirk graduated from Palmer College Chiropractic - Davenport
Gregory Shirk graduated from Palmer College Chiropractic - Davenport in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gregory J. Shirk'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 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 Gregory J. Shirk
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory J. Shirk's NPI number?
Gregory J. Shirk's NPI number is 1629064464. It was assigned on September 27, 2005, and it is active in the NPI Registry.
What does Gregory J. Shirk specialize in?
Gregory J. Shirk is a chiropractor in Mason City, Iowa. The primary specialty in the NPI Registry is Chiropractor (taxonomy code 111N00000X).
Where does Gregory J. Shirk practice?
Gregory Shirk practices at 630 1st St Nw, Mason City, IA 50401-2947. Gregory Shirk's primary practice is Acute Care Chiropractic in Mason City, Iowa.
What is Gregory J. Shirk's office phone number?
The practice phone on file for Gregory Shirk is (641) 423-4455.
What is Gregory J. Shirk's medical license number?
Gregory Shirk holds Iowa license A05882.
Does Gregory J. Shirk accept Medicare?
Yes. CMS lists Gregory Shirk as accepting Medicare assignment.
How many Medicare patients does Gregory J. Shirk see?
CMS counts 149 Medicare patients who saw Gregory Shirk in 2024, with an average age of 75.
Where did Gregory J. Shirk go to medical school?
Gregory Shirk graduated from Palmer College Chiropractic - Davenport in 1995.
How long has Gregory J. Shirk been practicing?
Gregory Shirk graduated from medical school in 1995, 31 years ago.
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