2026 NPPES data Family Nurse Practitioner NPI 1598483646 FNP
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Matilda Koyilla, FNP

Family Nurse Practitioner in Chandler, Arizona. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
327
Medicare Part D claims · 55 beneficiaries · Family Nurse Practitioner avg: 1K

What the federal data shows

Matilda Koyilla, FNP filed 327 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Chandler, Arizona.

327
Part D claims, 2023

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.

Matilda Koyilla, FNP's Medicare Part D volume vs every U.S. prescriber

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

327 Top 43% higher than 57% 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. 2,000–2,200: 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 Matilda Koyilla, FNP?

Quality data not reported

NPI registry status

Active

Issued 08/15/2022

NPI 1598483646

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

327 73% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Arizona

How Family Nurse Practitioner compares to other specialties among Arizona providers

Arizona providers

Family Nurse Practitioner share within Arizona

1. Family Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Nurse Practitioner share within Arizona

Specialty board-certification context

Estimated specialty board-certified rate — Family Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Family Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Nurse Practitioner) — ABMS / AOA estimate

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).

Matilda Koyilla, FNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP credentials at 4703 S PEARL DR, Chandler, AZ, 85249, with a listed phone of (419) 392-3400. NPI 1598483646 was issued on 08/15/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Koyilla 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 327 prescription claims written by this provider, covering 55 Medicare beneficiaries and totaling roughly $23K in drug spend, with an opioid prescribing rate of 19.3%. 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.

Family Nurse Practitioner is a high-volume specialty nationwide, with 209,817 enrolled providers across 56 states and an average of 1,222 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

4703 S PEARL DR
Chandler, AZ 85249

Provider Details

NPI 1598483646
Specialty Family Nurse Practitioner
Credentials FNP
Gender Female
NPI Issued 08/15/2022

Hospital and facility affiliations

Facilities where Matilda Koyilla, FNP 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.

Hassan Akinbiyi MD PLLC
Chandler, 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).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

327
Total Claims
$23K
Total Drug Cost
55
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
332
Total Day Supply
6,687
Generic Drug Cost
$5K
Opioid Claims
63 (19.3% rate)

Patient Demographics

Average Patient Age
71.8 years
Avg HCC Risk Score
3.18
Gender Split
53% female / 47% male

Top Prescribed Drugs (Medicare Part D)

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

What Matilda Koyilla, FNP 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
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
29
Metformin Hcl
19
Oxycodone Hcl
19
Gabapentin
16
Tramadol Hcl
13
Levothyroxine Sodium
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Family Nurse Practitioner Overview

How Matilda Koyilla, FNP fits within the Family Nurse Practitioner landscape nationally.

209,817
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider

Matilda Koyilla, FNP's 327 claims are below the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Arizona

Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Koyilla.

Compare Family 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 Family 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 Matilda Koyilla, FNP's specialty?
Matilda Koyilla, FNP specializes in Family Nurse Practitioner and practices in Chandler, Arizona. Credentials: FNP.
How much does Matilda Koyilla, FNP prescribe under Medicare Part D?
In 2023, Matilda Koyilla, FNP wrote 327 Medicare Part D claims totaling $23K in drug costs for 55 beneficiaries.
Where is Matilda Koyilla, FNP located?
Matilda Koyilla, FNP is located at 4703 S PEARL DR, Chandler, AZ, 85249. Phone: (419) 392-3400.
What is Matilda Koyilla, FNP's NPI number?
Matilda Koyilla, FNP's National Provider Identifier (NPI) is 1598483646, issued on 08/15/2022.
Does Matilda Koyilla, FNP prescribe opioids?
Yes, Matilda Koyilla, FNP had 63 opioid claims in 2023 with an opioid prescribing rate of 19.3%.
How many Family Nurse Practitioner providers are there in the US?
There are 209,817 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Matilda Koyilla, FNP prescribe most often?
Based on 2023 Medicare Part D data, Matilda Koyilla, FNP's most frequently prescribed drugs include Oxycodone-Acetaminophen, Metformin Hcl, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Matilda Koyilla, FNP accept Medicare?
Matilda Koyilla, FNP appears in CMS Medicare data with 327 Part D claims and 55 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Matilda Koyilla, FNP's credentials?
Matilda Koyilla, FNP's NPI is 1598483646 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

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