Abigail Carrie Holzwarth, APRN, DNP, FNP-BC
- Medicare patients, 2024
- 316
- Part D claims, 2024
- 1,147
- Hospital affiliations
- 6
- Industry payments
- $19
- Medical groups
- 2
- Practice address
- 2800 10th Ave N, Billings, MT 59101
- Practice phone
- Call (406) 657-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Abigail Holzwarth'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.
Abigail Carrie Holzwarth is a nurse practitioner in Billings, Montana
Abigail Holzwarth practices at Billings Clinic Hospital in Billings, Montana, part of Billings Clinic.
Abigail Holzwarth's NPI, 1104544576, was assigned on August 22, 2022. Abigail Holzwarth holds Montana license 198020.
- NPI
- 1104544576NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931576436
- NPI enumeration date
- August 22, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (406) 657-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Abigail Carrie Holzwarth practices at Billings Clinic Hospital in Billings, Montana
Abigail Holzwarth's primary practice is Billings Clinic Hospital, at 2800 10th Ave N, Billings, MT 59101 in Yellowstone County. The practice phone is (406) 657-4000.
- Billings Clinic Hospital2800 10th Ave N, Billings, MT 59101 · Yellowstone CountyPhone(406) 657-4000
Source: Dmand AI Affiliation Data
Abigail Carrie Holzwarth is affiliated with 7 sites of care and 2 medical groups
Abigail Holzwarth's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Abigail Holzwarth is also affiliated with Sheridan Memorial Hospital. The medical group on file is Billings Clinic. Dmand AI also links Abigail Holzwarth to 4 more hospitals, 1 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 Abigail Carrie Holzwarth's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Abigail Holzwarth practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Billings Clinic Hospital | Available with a free account |
| +6 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 Billings Clinic and 6.2K+ hospitals, with verified contacts in the same login.
Abigail Carrie Holzwarth is one of 251 nurse practitioners in Montana
Nurse practitioner is Abigail Holzwarth's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Abigail Holzwarth is licensed in Montana.
Specialties and state licenses
- Nurse practitioner, MontanaPrimary
Nurse practitioners near Abigail Holzwarth
Counts of nurse practitioners 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
Abigail Carrie Holzwarth treated 316 Medicare patients in 2024, average age 74
CMS counts 316 Medicare patients who saw Abigail Holzwarth in 2024. The largest group is 65 to 74, with 134 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 16% are also on Medicaid. Their average risk score is 2.47, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Abigail Holzwarth's median patient age at 72, with 54% women.
Abigail Holzwarth's Medicare patients by age, 2024
Abigail Holzwarth's Medicare patients by sex, 2024
- Women18258%
- Men13442%
Chronic conditions among Abigail Holzwarth's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol66%
- Diabetes49%
- Arthritis43%
- Heart failure35%
- Ischemic heart disease32%
- Mood disorders31%
Share of Medicare patients with each condition. A patient can have several.
Abigail Holzwarth's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Abigail Carrie Holzwarth wrote 1,147 Medicare Part D claims in 2024
In 2024, Abigail Holzwarth wrote 1,147 Medicare Part D claims for 210 patients. 92% of them were for generic drugs.
Abigail Holzwarth's Part D claims by kind of drug, 2024
- Generic1,050 claims92%
- Brand-name97 claims8%
Drug classes CMS tracks in Abigail Holzwarth's Part D claims, 2024
- Antibiotics1%13 of 1,147 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Abigail Carrie Holzwarth offers telehealth to Medicare patients
Abigail Holzwarth accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Abigail Holzwarth as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Abigail Carrie Holzwarth received $19 in industry payments in 2025
CMS Open Payments shows 1 general payment to Abigail Holzwarth from 1 drug or device company in 2025. Education make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $19.
Companies that paid Abigail Holzwarth the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Abigail Carrie Holzwarth'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 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 (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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Abigail Carrie Holzwarth
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Abigail Carrie Holzwarth's NPI number?
Abigail Carrie Holzwarth's NPI number is 1104544576. It was assigned on August 22, 2022, and it is active in the NPI Registry.
What does Abigail Carrie Holzwarth specialize in?
Abigail Carrie Holzwarth is a nurse practitioner in Billings, Montana. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Abigail Carrie Holzwarth practice?
Abigail Holzwarth practices at 2800 10th Ave N, Billings, MT 59101. Abigail Holzwarth's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Dmand AI also links Abigail Holzwarth to 4 hospitals, 1 group practice or clinic and 1 medical group.
What is Abigail Carrie Holzwarth's office phone number?
The practice phone on file for Abigail Holzwarth is (406) 657-4000.
What is Abigail Carrie Holzwarth's medical license number?
Abigail Holzwarth holds Montana license 198020.
Which hospitals is Abigail Carrie Holzwarth affiliated with?
Abigail Holzwarth practices at Billings Clinic Hospital in Billings, Montana. Abigail Holzwarth is also affiliated with Sheridan Memorial Hospital. Dmand AI links Abigail Holzwarth to 4 more hospitals.
What medical group is Abigail Carrie Holzwarth part of?
Abigail Holzwarth is linked to Billings Clinic. Dmand AI links Abigail Holzwarth to 1 more medical group.
Does Abigail Carrie Holzwarth accept Medicare?
Yes. CMS lists Abigail Holzwarth as accepting Medicare assignment.
Does Abigail Carrie Holzwarth offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Abigail Holzwarth as offering telehealth services.
How many Medicare patients does Abigail Carrie Holzwarth see?
CMS counts 316 Medicare patients who saw Abigail Holzwarth in 2024, with an average age of 74.
Has Abigail Carrie Holzwarth received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Abigail Holzwarth from 1 company from 2025 to 2025. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Abigail Carrie Holzwarth been practicing?
Abigail Holzwarth graduated from medical school in 2022, 4 years ago.
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