NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1730150749 FNP
Verify on CMS → Mitzi Garrison, FNP
Nurse Practitioner in Mason City, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 87,700 in Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
363
Medicare Part D claims · 101 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Mitzi Garrison, FNP filed 363 Medicare Part D claims in 2023 as a Nurse Practitioner in Mason City, Iowa, prescribing 84% generic.
- 363
- Part D claims, 2023
- 84%
- generic prescribing
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Mitzi Garrison, FNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
363 Top 43% higher than 57% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Mitzi Garrison, FNP?
Quality data not reportedPrimary specialty
Nurse Practitioner
Medicare Part D claims
363 67% vs specialty avg
Specialty distribution in Iowa
How Nurse Practitioner compares to other specialties among Iowa providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Nurse Practitioner. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Mitzi Garrison, FNP appears in the CMS NPPES registry as a Nurse Practitioner provider holding FNP credentials at 1000 4TH ST SW, Mason City, IA, 50401, with a listed phone of (641) 428-6320. NPI 1730150749 was issued on 01/28/2006.
Medicare Part D records for calendar year 2023 show 363 prescription claims written by this provider, covering 101 Medicare beneficiaries and totaling roughly $759K in drug spend, split 16% brand-name and 84% generic by claim count, with an opioid prescribing rate of 6.6%.
Nurse Practitioner is a high-volume specialty nationwide, with 87,700 enrolled providers across 56 states and an average of 1,084 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1730150749 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 01/28/2006 |
Brand vs generic prescribing mix · Typical
Mitzi Garrison, FNP - brand share 16.0%
Nurse Practitioner average
16% brand-name claims vs 84% generic, on 363 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
363
Total Claims
$759K
Total Drug Cost
101
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 646
- Total Day Supply
- 18,714
- Brand vs Generic
- 16% brand / 84% generic
- Brand Drug Cost
- $678K
- Generic Drug Cost
- $81K
- Opioid Claims
- 24 (6.6% rate)
Patient Demographics
- Average Patient Age
- 74.6 years
- Avg HCC Risk Score
- 1.90
- Gender Split
- 72% female / 28% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mitzi Garrison, FNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
100 claims
- Letrozole 39
Letrozole
39 claims
- Prednisone 21
Prednisone
21 claims
- Tamoxifen Citrate 19
Tamoxifen Citrate
19 claims
- Abiraterone Acetate 16
Abiraterone Acetate
16 claims
- Hydroxyurea 16
Hydroxyurea
16 claims
- Oxycodone-Acetamin… 14
Oxycodone-Acetaminophen
14 claims
- Imbruvica 11
Imbruvica
11 claims
| Drug | Claims |
|---|---|
| Anastrozole | 100 |
| Letrozole | 39 |
| Prednisone | 21 |
| Tamoxifen Citrate | 19 |
| Abiraterone Acetate | 16 |
| Hydroxyurea | 16 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 14 |
| Imbruvica Ibrutinib | 11 |
| Levothyroxine Sodium | 11 |
| Xtandi Enzalutamide | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Mitzi Garrison, FNP fits within the Nurse Practitioner landscape nationally.
87,700
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider
Mitzi Garrison, FNP's 363 claims are below the specialty average of 1,084.
Nearby Nurse Practitioner Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Garrison.
Jennifer Achenbach
Council Bluffs, IA
Dr. Elizabeth Ackerson
ARNP
Waterloo, IA
Dr. Anece Adam
ARNP
Iowa City, IA
Dr. Debra Adams
ARNP
Fort Dodge, IA
Dr. Kathleen Adams
ARNP
Des Moines, IA
Compare Nurse Practitioner nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Iowa medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Mitzi Garrison, FNP's specialty? ▼
Mitzi Garrison, FNP specializes in Nurse Practitioner and practices in Mason City, Iowa. Credentials: FNP.
How much does Mitzi Garrison, FNP prescribe under Medicare Part D? ▼
In 2023, Mitzi Garrison, FNP wrote 363 Medicare Part D claims totaling $759K in drug costs for 101 beneficiaries.
Where is Mitzi Garrison, FNP located? ▼
Mitzi Garrison, FNP is located at 1000 4TH ST SW, Mason City, IA, 50401. Phone: (641) 428-6320.
What is Mitzi Garrison, FNP's NPI number? ▼
Mitzi Garrison, FNP's National Provider Identifier (NPI) is 1730150749, issued on 01/28/2006.
Does Mitzi Garrison, FNP prescribe more brand-name or generic drugs? ▼
Mitzi Garrison, FNP's prescribing is 16% brand-name and 84% generic drugs by claim count, with $678K in brand drug costs.
Does Mitzi Garrison, FNP prescribe opioids? ▼
Yes, Mitzi Garrison, FNP had 24 opioid claims in 2023 with an opioid prescribing rate of 6.6%.
How many Nurse Practitioner providers are there in the US? ▼
There are 87,700 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does Mitzi Garrison, FNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Mitzi Garrison, FNP's most frequently prescribed drugs include Anastrozole, Letrozole, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mitzi Garrison, FNP accept Medicare? ▼
Mitzi Garrison, FNP appears in CMS Medicare data with 363 Part D claims and 101 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mitzi Garrison, FNP's credentials? ▼
Mitzi Garrison, FNP's NPI is 1730150749 with credentials FNP. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.