2026 NPPES data Nurse Practitioner NPI 1558903237 AGNP-C
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CLAIRE CHIRILLO, AGNP-C

Nurse Practitioner in ROYAL OAK, Michigan. 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
379
Medicare Part D claims · 90 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$537.12
18 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CLAIRE CHIRILLO, AGNP-C filed 379 Medicare Part D claims in 2023 as a Nurse Practitioner in ROYAL OAK, Michigan, prescribing 88% generic.

379
Part D claims, 2023
88%
generic prescribing
$537.12
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.

CLAIRE CHIRILLO, AGNP-C's Medicare Part D volume vs every U.S. prescriber

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

379 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 CLAIRE CHIRILLO, AGNP-C?

Quality data not reported

NPI registry status

Active

Issued 10/14/2019

NPI 1558903237

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

379 65% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Michigan

How Nurse Practitioner compares to other specialties among Michigan providers

Michigan providers

Nurse Practitioner share within Michigan

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (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).

CLAIRE CHIRILLO, AGNP-C appears in the CMS NPPES registry as a Nurse Practitioner provider holding AGNP-C credentials at 3535 W 13 MILE RD, ROYAL OAK, MI, 48073, with a listed phone of (248) 288-9340. NPI 1558903237 was issued on 10/14/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHIRILLO 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 379 prescription claims written by this provider, covering 90 Medicare beneficiaries and totaling roughly $74K in drug spend, split 12% brand-name and 88% generic by claim count. 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.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 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

3535 W 13 MILE RD
ROYAL OAK, MI 48073

Provider Details

NPI 1558903237
Specialty Nurse Practitioner
Credentials AGNP-C
Gender Female
NPI Issued 10/14/2019

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 CLAIRE CHIRILLO, AGNP-C. Source: openpaymentsdata.cms.gov.

Total received

$537

Largest payer

Boehringer Ingelheim Pharmaceuticals, 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.

License & disciplinary context — Michigan MI-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 — they are NOT specific to CLAIRE CHIRILLO, AGNP-C. To verify CLAIRE CHIRILLO, AGNP-C's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

CLAIRE CHIRILLO, AGNP-C — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 379 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.

379
Total Claims
$74K
Total Drug Cost
90
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
884
Total Day Supply
26,387
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$54K
Generic Drug Cost
$21K

Patient Demographics

Average Patient Age
71.3 years
Avg HCC Risk Score
6.01
Gender Split
40% female / 60% male

Top Prescribed Drugs (Medicare Part D)

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

What CLAIRE CHIRILLO, AGNP-C 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
Nifedipine Er
Nifedipine
34
Furosemide
32
Amlodipine Besylate
31
Calcitriol
27
Sevelamer Carbonate
26
Carvedilol
25
Hydralazine Hcl
22
Bumetanide
21
Lokelma
Sodium Zirconium Cyclosilicate
16
Losartan Potassium
15

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

Nurse Practitioner Overview

How CLAIRE CHIRILLO, AGNP-C fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

CLAIRE CHIRILLO, AGNP-C's 379 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Michigan

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

Compare Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is CLAIRE CHIRILLO, AGNP-C's specialty?
CLAIRE CHIRILLO, AGNP-C specializes in Nurse Practitioner and practices in ROYAL OAK, Michigan. Credentials: AGNP-C.
How much does CLAIRE CHIRILLO, AGNP-C prescribe under Medicare Part D?
In 2023, CLAIRE CHIRILLO, AGNP-C wrote 379 Medicare Part D claims totaling $74K in drug costs for 90 beneficiaries.
Where is CLAIRE CHIRILLO, AGNP-C located?
CLAIRE CHIRILLO, AGNP-C is located at 3535 W 13 MILE RD, ROYAL OAK, MI, 48073. Phone: (248) 288-9340.
What is CLAIRE CHIRILLO, AGNP-C's NPI number?
CLAIRE CHIRILLO, AGNP-C's National Provider Identifier (NPI) is 1558903237, issued on 10/14/2019.
Does CLAIRE CHIRILLO, AGNP-C prescribe more brand-name or generic drugs?
CLAIRE CHIRILLO, AGNP-C's prescribing is 12% brand-name and 88% generic drugs by claim count, with $54K in brand drug costs.
How many Nurse Practitioner providers are there in the US?
There are 87,227 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 CLAIRE CHIRILLO, AGNP-C prescribe most often?
Based on 2023 Medicare Part D data, CLAIRE CHIRILLO, AGNP-C's most frequently prescribed drugs include Nifedipine Er, Furosemide, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CLAIRE CHIRILLO, AGNP-C accept Medicare?
CLAIRE CHIRILLO, AGNP-C appears in CMS Medicare data with 379 Part D claims and 90 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CLAIRE CHIRILLO, AGNP-C's credentials?
CLAIRE CHIRILLO, AGNP-C's NPI is 1558903237 with credentials AGNP-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

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