2026 NPPES data Ambulatory Care Registered Nurse NPI 1013439405 NP
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NNENNA CHIMDI, NP

Ambulatory Care Registered Nurse in PALMDALE, California. 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
161
Medicare Part D claims · 49 beneficiaries · Ambulatory Care Registered Nurse avg: 695

What the federal data shows

NNENNA CHIMDI, NP filed 161 Medicare Part D claims in 2023 as a Ambulatory Care Registered Nurse in PALMDALE, California.

161
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.

NNENNA CHIMDI, NP's Medicare Part D volume vs every U.S. prescriber

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

161 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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 NNENNA CHIMDI, NP?

Quality data not reported

NPI registry status

Active

Issued 07/07/2017

NPI 1013439405

Primary specialty

Ambulatory Care Registered Nurse

Niche

3,123 US NPIs in this specialty

Medicare Part D claims

161 77% vs specialty avg

2023 prescription claims

Specialty avg: 695

Specialty distribution in California

How Ambulatory Care Registered Nurse compares to other specialties among California providers

California providers

Ambulatory Care Registered Nurse share within California

1. Ambulatory Care Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ambulatory Care Registered Nurse share within California

Specialty board-certification context

Estimated specialty board-certified rate — Ambulatory Care Registered Nurse (ABMS / AOA reference)

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

Est. board-certified rate (Ambulatory Care Registered Nurse) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Ambulatory Care Registered Nurse) — 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).

NNENNA CHIMDI, NP appears in the CMS NPPES registry as a Ambulatory Care Registered Nurse provider holding NP credentials at 38350 40TH ST E, PALMDALE, CA, 93552, with a listed phone of (661) 225-3050. NPI 1013439405 was issued on 07/07/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHIMDI 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 161 prescription claims written by this provider, covering 49 Medicare beneficiaries and totaling roughly $5K in drug spend. 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.

Ambulatory Care Registered Nurse is a narrow specialty nationwide, with 3,123 enrolled providers across 53 states and an average of 695 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

38350 40TH ST E
PALMDALE, CA 93552

Provider Details

NPI 1013439405
Specialty Ambulatory Care Registered Nurse
Credentials NP
Gender Female
NPI Issued 07/07/2017

Hospital and facility affiliations

Facilities where NNENNA CHIMDI, NP 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.

MENDRIX MEDICAL ASSOCIATES INC
GARDENA, CA
METICULOUS HEALTH CARE PC
VAN NUYS, 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).

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 NNENNA CHIMDI, NP. To verify NNENNA CHIMDI, NP'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.

161
Total Claims
$5K
Total Drug Cost
49
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
184
Total Day Supply
4,561
Generic Drug Cost
$2K
Antibiotic Claims
20

Patient Demographics

Average Patient Age
73.3 years
Avg HCC Risk Score
2.25
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.

Drug Claims
Amlodipine Besylate
14
Atorvastatin Calcium
12

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

Ambulatory Care Registered Nurse Overview

How NNENNA CHIMDI, NP fits within the Ambulatory Care Registered Nurse landscape nationally.

3,123
Ambulatory Care Registered Nurse Providers in US
53
States with Ambulatory Care Registered Nurse
695
Avg Claims per Provider

NNENNA CHIMDI, NP's 161 claims are below the specialty average of 695.

Nearby Ambulatory Care Registered Nurse Providers in California

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

Compare Ambulatory Care Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is NNENNA CHIMDI, NP's specialty?
NNENNA CHIMDI, NP specializes in Ambulatory Care Registered Nurse and practices in PALMDALE, California. Credentials: NP.
How much does NNENNA CHIMDI, NP prescribe under Medicare Part D?
In 2023, NNENNA CHIMDI, NP wrote 161 Medicare Part D claims totaling $5K in drug costs for 49 beneficiaries.
Where is NNENNA CHIMDI, NP located?
NNENNA CHIMDI, NP is located at 38350 40TH ST E, PALMDALE, CA, 93552. Phone: (661) 225-3050.
What is NNENNA CHIMDI, NP's NPI number?
NNENNA CHIMDI, NP's National Provider Identifier (NPI) is 1013439405, issued on 07/07/2017.
How many Ambulatory Care Registered Nurse providers are there in the US?
There are 3,123 Ambulatory Care Registered Nurse providers across 53 states in the US. The average Ambulatory Care Registered Nurse provider writes 695 Medicare Part D claims per year.
What drugs does NNENNA CHIMDI, NP prescribe most often?
Based on 2023 Medicare Part D data, NNENNA CHIMDI, NP's most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NNENNA CHIMDI, NP accept Medicare?
NNENNA CHIMDI, NP appears in CMS Medicare data with 161 Part D claims and 49 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NNENNA CHIMDI, NP's credentials?
NNENNA CHIMDI, NP's NPI is 1013439405 with credentials NP. 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