NPI registry status
Active
2026 NPPES data Adult Health Nurse Practitioner NPI 1578510566 ANP-C
Verify on CMS → Miriam Guarino, ANP-C
Adult Health Nurse Practitioner in Phoenix, 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 29,492 in Adult Health 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
1K
Medicare Part D claims · 66 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Industry payments
$175
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Miriam Guarino, ANP-C filed 1,140 Medicare Part D claims in 2023 as a Adult Health Nurse Practitioner in Phoenix, Arizona.
- 1K
- Part D claims, 2023
- $175
- 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.
Miriam Guarino, ANP-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,140 Top 23% higher than 77% 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 Miriam Guarino, ANP-C?
Quality data not reportedPrimary specialty
Adult Health Nurse Practitioner
Medicare Part D claims
1,140 5% vs specialty avg
Specialty distribution in Arizona
How Adult Health 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 Adult Health 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).
Miriam Guarino, ANP-C appears in the CMS NPPES registry as a Adult Health Nurse Practitioner provider holding ANP-C credentials at 4530 E MUIRWOOD DR, Phoenix, AZ, 85048, with a listed phone of (480) 961-2303. NPI 1578510566 was issued on 05/27/2006.
Medicare Part D records for calendar year 2023 show 1,140 prescription claims written by this provider, covering 66 Medicare beneficiaries and totaling roughly $174K in drug spend, with an opioid prescribing rate of 7.3%.
Adult Health Nurse Practitioner is a mid-sized specialty nationwide, with 29,492 enrolled providers across 55 states and an average of 1,201 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 | 1578510566 |
|---|---|
| Specialty | Adult Health Nurse Practitioner |
| Credentials | ANP-C |
| Gender | Female |
| NPI Issued | 05/27/2006 |
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 Miriam Guarino, ANP-C. Source: openpaymentsdata.cms.gov.
Total received
$175
Largest payer
Eisai 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.
1,140
Total Claims
$174K
Total Drug Cost
66
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,140
- Total Day Supply
- 26,891
- Generic Drug Cost
- $27K
- Opioid Claims
- 83 (7.3% rate)
- Antibiotic Claims
- 57
Patient Demographics
- Average Patient Age
- 69.8 years
- Avg HCC Risk Score
- 3.46
- Gender Split
- 48% female / 52% male
- Age Distribution
- <65: 19, 65-74: 25, 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 Miriam Guarino, ANP-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
54 claims
- Tamsulosin Hcl
Tamsulosin Hcl
45 claims
- Eliquis
Eliquis
39 claims
- Oxycodone Hcl
Oxycodone Hcl
38 claims
- Atorvastatin Calcium
Atorvastatin Calcium
35 claims
- Gabapentin
Gabapentin
34 claims
- Lisinopril
Lisinopril
28 claims
- Duloxetine Hcl
Duloxetine Hcl
27 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 54 |
| Tamsulosin Hcl | 45 |
| Eliquis Apixaban | 39 |
| Oxycodone Hcl | 38 |
| Atorvastatin Calcium | 35 |
| Gabapentin | 34 |
| Lisinopril | 28 |
| Duloxetine Hcl | 27 |
| Potassium Chloride | 27 |
| Furosemide | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Adult Health Nurse Practitioner Overview
How Miriam Guarino, ANP-C fits within the Adult Health Nurse Practitioner landscape nationally.
29,492
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,201
Avg Claims per Provider
Miriam Guarino, ANP-C's 1,140 claims are below the specialty average of 1,201.
Nearby Adult Health Nurse Practitioner Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Guarino.
Dr. Mary Abrahamson
DNP, NP-C, ACHPN
Tucson, AZ
Dr. Rachel Adler
NP
Tucson, AZ
Dr. Catherine Akbari
NP
Phoenix, AZ
Dr. Pamela Akers
NP
Prescott, AZ
Dr. Derik Alexander
FNP
Phoenix, AZ
Compare Adult Health 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 Adult Health 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 Miriam Guarino, ANP-C's specialty? ▼
Miriam Guarino, ANP-C specializes in Adult Health Nurse Practitioner and practices in Phoenix, Arizona. Credentials: ANP-C.
How much does Miriam Guarino, ANP-C prescribe under Medicare Part D? ▼
In 2023, Miriam Guarino, ANP-C wrote 1,140 Medicare Part D claims totaling $174K in drug costs for 66 beneficiaries.
Where is Miriam Guarino, ANP-C located? ▼
Miriam Guarino, ANP-C is located at 4530 E MUIRWOOD DR, Phoenix, AZ, 85048. Phone: (480) 961-2303.
What is Miriam Guarino, ANP-C's NPI number? ▼
Miriam Guarino, ANP-C's National Provider Identifier (NPI) is 1578510566, issued on 05/27/2006.
Does Miriam Guarino, ANP-C prescribe opioids? ▼
Yes, Miriam Guarino, ANP-C had 83 opioid claims in 2023 with an opioid prescribing rate of 7.3%.
How many Adult Health Nurse Practitioner providers are there in the US? ▼
There are 29,492 Adult Health Nurse Practitioner providers across 55 states in the US. The average Adult Health Nurse Practitioner provider writes 1,201 Medicare Part D claims per year.
What drugs does Miriam Guarino, ANP-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Miriam Guarino, ANP-C's most frequently prescribed drugs include Levothyroxine Sodium, Tamsulosin Hcl, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Miriam Guarino, ANP-C accept Medicare? ▼
Miriam Guarino, ANP-C appears in CMS Medicare data with 1,140 Part D claims and 66 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Miriam Guarino, ANP-C's credentials? ▼
Miriam Guarino, ANP-C's NPI is 1578510566 with credentials ANP-C. 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.