NPI registry status
Active
2026 NPPES data Gerontology Nurse Practitioner NPI 1588233175 AGNP
Verify on CMS → Peter Hennis, AGNP
Gerontology Nurse Practitioner in Casa Grande, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,706 in Gerontology 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
860
Medicare Part D claims · 200 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Industry payments
$15.7K
245 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Peter Hennis, AGNP filed 860 Medicare Part D claims in 2023 as a Gerontology Nurse Practitioner in Casa Grande, Arizona.
- 860
- Part D claims, 2023
- $15.7K
- industry payments (Sunshine Act)
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.
Peter Hennis, AGNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
860 Top 27% higher than 73% 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 Peter Hennis, AGNP?
Quality data not reportedPrimary specialty
Gerontology Nurse Practitioner
Medicare Part D claims
860 33% vs specialty avg
Specialty distribution in Arizona
How Gerontology Nurse Practitioner compares to other specialties among Arizona 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 Gerontology 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).
Peter Hennis, AGNP appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding AGNP credentials at 520 N CAMINO MERCADO STE 1, Casa Grande, AZ, 85122, with a listed phone of (520) 557-5600. NPI 1588233175 was issued on 06/18/2021.
Medicare Part D records for calendar year 2023 show 860 prescription claims written by this provider, covering 200 Medicare beneficiaries and totaling roughly $1.0 million in drug spend.
Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,706 enrolled providers across 54 states and an average of 1,283 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 | 1588233175 |
|---|---|
| Specialty | Gerontology Nurse Practitioner |
| Credentials | AGNP |
| Gender | Male |
| NPI Issued | 06/18/2021 |
Hospital and facility affiliations
Facilities where Peter Hennis, AGNP bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Bonhoeffer Rheumatology Institute LLC
Casa Grande, AZ
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Peter Hennis, AGNP. Source: openpaymentsdata.cms.gov.
Total received
$15.7K
Largest payer
Amgen Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
860
Total Claims
$1.0M
Total Drug Cost
200
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,314
- Total Day Supply
- 35,361
- Generic Drug Cost
- $19K
Patient Demographics
- Average Patient Age
- 67.3 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 70% female / 31% male
- Age Distribution
- <65: 56, 65-74: 85, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Peter Hennis, AGNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
183 claims
- Methotrexate
Methotrexate
123 claims
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
105 claims
- Allopurinol 44
Allopurinol
44 claims
- Mycophenolate Mofe… 44
Mycophenolate Mofetil
44 claims
- Enbrel Mini 28
Enbrel Mini
28 claims
- Humira(Cf) Pen 22
Humira(Cf) Pen
22 claims
- Gabapentin 21
Gabapentin
21 claims
| Drug | Claims |
|---|---|
| Prednisone | 183 |
| Methotrexate Methotrexate Sodium | 123 |
| Hydroxychloroquine Sulfate | 105 |
| Allopurinol | 44 |
| Mycophenolate Mofetil | 44 |
| Enbrel Mini Etanercept | 28 |
| Humira(Cf) Pen Adalimumab | 22 |
| Gabapentin | 21 |
| Xeljanz Xr Tofacitinib Citrate | 21 |
| Baclofen | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gerontology Nurse Practitioner Overview
How Peter Hennis, AGNP fits within the Gerontology Nurse Practitioner landscape nationally.
9,706
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider
Peter Hennis, AGNP's 860 claims are below the specialty average of 1,283.
Nearby Gerontology Nurse Practitioner Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Hennis.
Dr. Efoui Abotsi-Kowu
NP
Yuma, AZ
Dr. Celina Acevedo-Adams
AGACNP-BC
Phoenix, AZ
Dr. Marion Adams
N.P.
Tucson, AZ
Dr. Felicia Aman
NURSE PRACTITIONER
Tempe, AZ
Dr. Crystal Aroz
FNP
Safford, AZ
Compare Gerontology 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 Arizona medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gerontology 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Arizona
Frequently Asked Questions
What is Peter Hennis, AGNP's specialty? ▼
Peter Hennis, AGNP specializes in Gerontology Nurse Practitioner and practices in Casa Grande, Arizona. Credentials: AGNP.
How much does Peter Hennis, AGNP prescribe under Medicare Part D? ▼
In 2023, Peter Hennis, AGNP wrote 860 Medicare Part D claims totaling $1.0M in drug costs for 200 beneficiaries.
Where is Peter Hennis, AGNP located? ▼
Peter Hennis, AGNP is located at 520 N CAMINO MERCADO STE 1, Casa Grande, AZ, 85122. Phone: (520) 557-5600.
What is Peter Hennis, AGNP's NPI number? ▼
Peter Hennis, AGNP's National Provider Identifier (NPI) is 1588233175, issued on 06/18/2021.
How many Gerontology Nurse Practitioner providers are there in the US? ▼
There are 9,706 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,283 Medicare Part D claims per year.
What drugs does Peter Hennis, AGNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Peter Hennis, AGNP's most frequently prescribed drugs include Prednisone, Methotrexate, Hydroxychloroquine Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Peter Hennis, AGNP accept Medicare? ▼
Peter Hennis, AGNP appears in CMS Medicare data with 860 Part D claims and 200 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Peter Hennis, AGNP's credentials? ▼
Peter Hennis, AGNP's NPI is 1588233175 with credentials AGNP. 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.