NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1639535834 FNP
Verify on CMS → Mary Carroll, FNP
Family Nurse Practitioner in Orange, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 210,832 in Family 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
2K
Medicare Part D claims · 148 beneficiaries · Family Nurse Practitioner avg: 1K
MIPS score
99.1/100
▲ 16 pts above national avg 83.5 · Exceptional
Industry payments
$20.74
1 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Mary Carroll, FNP reported a CMS MIPS final score of 99.1/100 - above the 83.5 national average - and filed 1,527 Medicare Part D claims in 2023.
- 99.1/100
- MIPS score · +16 vs avg
- 2K
- Part D claims, 2023
- $20.74
- industry payments (Sunshine Act)
- ≥91st
- pct among measured MIPS (lower-bound band)
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.
Federal trust snapshot
What official records show about Mary Carroll, FNP
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1639535834), first enumerated 01/05/2016.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,527 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 99.1/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$20.74 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Mary Carroll, FNP's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1639535834 · Family Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-ELITE · RX-MID · BOOK-MID · PHOTO-FINISH
- NPI-10 1639535834
- ENUM-MID 2016
- TAX-MEGA 211K Family Nurse
- MIPS-ELITE 99.1/100
- RX-MID 1,527
- BOOK-MID 15,115 in California
- PHOTO-FINISH Lauren Clermont · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Carroll · this p…
Carroll · this provider
99.1 MIPS pts
- Mary McLaud · hi…
Mary McLaud
99.1 MIPS pts
- Lauren Clermont …
Lauren Clermont
99.1 MIPS pts
- Jennifer Klein ·…
Jennifer Klein
99.1 MIPS pts
- Charmeka Lipscom…
Charmeka Lipscomb
99.1 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Mary Carroll, FNP's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
99 ≥ 91st percentile 91% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mary Carroll, FNP sits
This provider among family nurse practitioner peers
Across the 26,556 family nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Mary Carroll, FNP writes more Part D claims than 76% of them and scores higher on MIPS quality than 91% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one family nurse practitioner peer from a representative sample of 60; the gold marker is Mary Carroll, FNP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Mary Carroll, FNP?
High performer (top quartile)Primary specialty
Family Nurse Practitioner
Medicare Part D claims
1,527 25% vs specialty avg
MIPS final score
99.1/100 15.6 pts vs avg
Specialty distribution in California
How Family Nurse Practitioner compares to other specialties among California providers
Medicare quality performance, MIPS
Mary Carroll, FNP's 2023 MIPS final score plotted against the Family Nurse Practitioner national average
- MIPS Final Score
- 99.1/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1639535834 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 01/05/2016 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
99.1275
Final Score
Measured-score avg: 83.5
85.2396
Quality
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mary Carroll, 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.
UC Regents
Orange, CA
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 Mary Carroll, FNP. Source: openpaymentsdata.cms.gov.
Total received
$21
Largest payer
AstraZeneca Pharmaceuticals LP
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 - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to Mary Carroll, FNP. To verify Mary Carroll, FNP's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,527
Total Claims
$8.0M
Total Drug Cost
148
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,792
- Total Day Supply
- 47,055
- Generic Drug Cost
- $74K
- Opioid Claims
- 110 (7.2% rate)
- Antibiotic Claims
- 39
Patient Demographics
- Average Patient Age
- 71.7 years
- Avg HCC Risk Score
- 3.15
- Gender Split
- 57% female / 43% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mary Carroll, FNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tagrisso
Tagrisso
295 claims
- Levothyroxine Sodium 73
Levothyroxine Sodium
73 claims
- Prochlorperazine M… 68
Prochlorperazine Maleate
68 claims
- Ondansetron Hcl 64
Ondansetron Hcl
64 claims
- Gabapentin 60
Gabapentin
60 claims
- Hydrocodone-Acetam… 52
Hydrocodone-Acetaminophen
52 claims
- Pantoprazole Sodium 50
Pantoprazole Sodium
50 claims
- Alecensa 40
Alecensa
40 claims
| Drug | Claims |
|---|---|
| Tagrisso Osimertinib Mesylate | 295 |
| Levothyroxine Sodium | 73 |
| Prochlorperazine Maleate | 68 |
| Ondansetron Hcl | 64 |
| Gabapentin | 60 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 52 |
| Pantoprazole Sodium | 50 |
| Alecensa Alectinib Hcl | 40 |
| Triamcinolone Acetonide | 38 |
| Potassium Chloride | 36 |
* 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 Mary Carroll, FNP fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Mary Carroll, FNP's 1,527 claims are above the specialty average of 1,222.
Nationwide Family Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Carroll, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (99.1 here).
Same NPPES enumeration year (2016)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Carroll.
One of 15,115 Family Nurse Practitioner providers enrolled in California, 5 are shown here.
Dr. Danielle Aaroe
FAMILY NURSE PRACTIT
Oroville, CA
Joshua Aaron
Mission Hills, CA
Dr. Orly Aaron
NP
San Francisco, CA
Paris Gilbert Russ Aaron
Sacramento, CA
Dr. Alvin Joseph Abad
FNP-C
San Francisco, CA
Compare Family Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mary Carroll, FNP's specialty? ▼
Mary Carroll, FNP specializes in Family Nurse Practitioner and practices in Orange, California. Credentials: FNP.
How much does Mary Carroll, FNP prescribe under Medicare Part D? ▼
In 2023, Mary Carroll, FNP wrote 1,527 Medicare Part D claims totaling $8.0M in drug costs for 148 beneficiaries.
What is Mary Carroll, FNP's Medicare quality score? ▼
Mary Carroll, FNP has a CMS MIPS Final Score of 99.1/100 (Quality: 85.2). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mary Carroll, FNP located? ▼
Mary Carroll, FNP is located at 101 THE CITY DR S, Orange, CA, 92868. Phone: (800) 465-3203.
What is Mary Carroll, FNP's NPI number? ▼
Mary Carroll, FNP's National Provider Identifier (NPI) is 1639535834, issued on 01/05/2016.
Does Mary Carroll, FNP prescribe opioids? ▼
Yes, Mary Carroll, FNP had 110 opioid claims in 2023 with an opioid prescribing rate of 7.2%.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 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 Mary Carroll, FNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary Carroll, FNP's most frequently prescribed drugs include Tagrisso, Levothyroxine Sodium, Prochlorperazine Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Carroll, FNP accept Medicare? ▼
Mary Carroll, FNP appears in CMS Medicare data with 1,527 Part D claims and 148 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Carroll, FNP's credentials? ▼
Mary Carroll, FNP's NPI is 1639535834 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
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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
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.