2026 NPPES data Adult Health Nurse Practitioner NPI 1811482466 APN
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Tamara Dvorak, APN

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
221
Medicare Part D claims · 58 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Tamara Dvorak, APN filed 221 Medicare Part D claims in 2023 as a Adult Health Nurse Practitioner in Phoenix, Arizona, prescribing 93% generic.

221
Part D claims, 2023
93%
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.

Tamara Dvorak, APN's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

221 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 Tamara Dvorak, APN?

Quality data not reported

NPI registry status

Active

Issued 06/26/2018

NPI 1811482466

Primary specialty

Adult Health Nurse Practitioner

Mid-sized

29,492 US NPIs in this specialty

Medicare Part D claims

221 82% vs specialty avg

2023 prescription claims

Specialty avg: 1,201

Specialty distribution in Arizona

How Adult Health Nurse Practitioner compares to other specialties among Arizona providers

Arizona providers
Pharmacist - 5.6%Pharmacist5.6%Behavior Technician - 5.6%Behavior Technician5.6%Family Nurse Practitioner - 4.3%Family Nurse Practitioner4.3%Physical Therapist - 4.2%Physical Therapist4.2%Speech-Language Pathologist - 3.5%Speech-Language Pathologist3.5%Student in an Organized Health Care Education/Training Program - 3.5%Student in an Organized Health Care Education/Training Program3.5%Adult Health Nurse Practitioner - 0.4%Adult Health Nurse Practitioner0.4%
Largest specialties in Arizona (% of in-state 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:

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).

Tamara Dvorak, APN appears in the CMS NPPES registry as a Adult Health Nurse Practitioner provider holding APN credentials at 5777 E MAYO BLVD, Phoenix, AZ, 85054, with a listed phone of (480) 342-2000. NPI 1811482466 was issued on 06/26/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Dvorak most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 221 prescription claims written by this provider, covering 58 Medicare beneficiaries and totaling roughly $7K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 13.1%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

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

5777 E MAYO BLVD
Phoenix, AZ 85054

Provider Details

NPI 1811482466
Specialty Adult Health Nurse Practitioner
Credentials APN
Gender Female
NPI Issued 06/26/2018

Hospital and facility affiliations

Facilities where Tamara Dvorak, APN 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.

Mayo Clinic Arizona
Scottsdale, 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).

Brand vs generic prescribing mix · Generic-heavy

Tamara Dvorak, APN - brand share 7.0%
Adult Health Nurse Practitioner average

7% brand-name claims vs 93% generic, on 221 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.

221
Total Claims
$7K
Total Drug Cost
58
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
314
Total Day Supply
7,268
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$5K
Generic Drug Cost
$2K
Opioid Claims
29 (13.1% rate)

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
1.65
Gender Split
36% female / 64% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Tamara Dvorak, APN prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Metoprolol Tartrate
22
Oxycodone Hcl
20
Pantoprazole Sodium
20
Potassium Chloride
17
Warfarin Sodium
17
Furosemide
15
Pregabalin
11

* 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 Tamara Dvorak, APN 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

Tamara Dvorak, APN's 221 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 Dvorak.

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.

Frequently Asked Questions

What is Tamara Dvorak, APN's specialty?
Tamara Dvorak, APN specializes in Adult Health Nurse Practitioner and practices in Phoenix, Arizona. Credentials: APN.
How much does Tamara Dvorak, APN prescribe under Medicare Part D?
In 2023, Tamara Dvorak, APN wrote 221 Medicare Part D claims totaling $7K in drug costs for 58 beneficiaries.
Where is Tamara Dvorak, APN located?
Tamara Dvorak, APN is located at 5777 E MAYO BLVD, Phoenix, AZ, 85054. Phone: (480) 342-2000.
What is Tamara Dvorak, APN's NPI number?
Tamara Dvorak, APN's National Provider Identifier (NPI) is 1811482466, issued on 06/26/2018.
Does Tamara Dvorak, APN prescribe more brand-name or generic drugs?
Tamara Dvorak, APN's prescribing is 7% brand-name and 93% generic drugs by claim count, with $5K in brand drug costs.
Does Tamara Dvorak, APN prescribe opioids?
Yes, Tamara Dvorak, APN had 29 opioid claims in 2023 with an opioid prescribing rate of 13.1%.
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 Tamara Dvorak, APN prescribe most often?
Based on 2023 Medicare Part D data, Tamara Dvorak, APN's most frequently prescribed drugs include Metoprolol Tartrate, Oxycodone Hcl, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tamara Dvorak, APN accept Medicare?
Tamara Dvorak, APN appears in CMS Medicare data with 221 Part D claims and 58 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tamara Dvorak, APN's credentials?
Tamara Dvorak, APN's NPI is 1811482466 with credentials APN. 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

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.