2026 NPPES data Registered Nurse NPI 1518027671 NP
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HELEN CHANDLER, NP

Registered Nurse in SAUSALITO, 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
392
Medicare Part D claims · 62 beneficiaries · Registered Nurse avg: 1K

What the federal data shows

HELEN CHANDLER, NP filed 392 Medicare Part D claims in 2023 as a Registered Nurse in SAUSALITO, California.

392
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.

HELEN CHANDLER, NP's Medicare Part D volume vs every U.S. prescriber

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

392 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 HELEN CHANDLER, NP?

Quality data not reported

NPI registry status

Active

Issued 12/11/2006

NPI 1518027671

Primary specialty

Registered Nurse

High-volume

175,652 US NPIs in this specialty

Medicare Part D claims

392 61% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

Specialty distribution in California

How Registered Nurse compares to other specialties among California providers

California providers

Registered Nurse share within California

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

Specialty board-certification context

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

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

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

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

HELEN CHANDLER, NP appears in the CMS NPPES registry as a Registered Nurse provider holding NP credentials at 13 BRAUN COURT, SAUSALITO, CA, 94965, with a listed phone of (415) 860-0773. NPI 1518027671 was issued on 12/11/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHANDLER 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 392 prescription claims written by this provider, covering 62 Medicare beneficiaries and totaling roughly $14K in drug spend, with an opioid prescribing rate of 35.2%. 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.

Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 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

13 BRAUN COURT
SAUSALITO, CA 94965

Provider Details

NPI 1518027671
Specialty Registered Nurse
Credentials NP
Gender Female
NPI Issued 12/11/2006

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 HELEN CHANDLER, NP. To verify HELEN CHANDLER, 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.

392
Total Claims
$14K
Total Drug Cost
62
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
392
Total Day Supply
6,969
Generic Drug Cost
$11K
Opioid Claims
138 (35.2% rate)

Patient Demographics

Average Patient Age
73.1 years
Avg HCC Risk Score
3.13
Gender Split
45% female / 55% male

Top Prescribed Drugs (Medicare Part D)

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

What HELEN CHANDLER, NP 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
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
57
Lacosamide
51
Lorazepam
44
Clonazepam
42
Oxycodone Hcl
35
Atorvastatin Calcium
27
Metformin Hcl
25
Methadone Hcl
23
Tramadol Hcl
11

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

Registered Nurse Overview

How HELEN CHANDLER, NP fits within the Registered Nurse landscape nationally.

175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider

HELEN CHANDLER, NP's 392 claims are below the specialty average of 1,000.

Nearby Registered Nurse Providers in California

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

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

Frequently Asked Questions

What is HELEN CHANDLER, NP's specialty?
HELEN CHANDLER, NP specializes in Registered Nurse and practices in SAUSALITO, California. Credentials: NP.
How much does HELEN CHANDLER, NP prescribe under Medicare Part D?
In 2023, HELEN CHANDLER, NP wrote 392 Medicare Part D claims totaling $14K in drug costs for 62 beneficiaries.
Where is HELEN CHANDLER, NP located?
HELEN CHANDLER, NP is located at 13 BRAUN COURT, SAUSALITO, CA, 94965. Phone: (415) 860-0773.
What is HELEN CHANDLER, NP's NPI number?
HELEN CHANDLER, NP's National Provider Identifier (NPI) is 1518027671, issued on 12/11/2006.
Does HELEN CHANDLER, NP prescribe opioids?
Yes, HELEN CHANDLER, NP had 138 opioid claims in 2023 with an opioid prescribing rate of 35.2%.
How many Registered Nurse providers are there in the US?
There are 175,652 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does HELEN CHANDLER, NP prescribe most often?
Based on 2023 Medicare Part D data, HELEN CHANDLER, NP's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Lacosamide, Lorazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HELEN CHANDLER, NP accept Medicare?
HELEN CHANDLER, NP appears in CMS Medicare data with 392 Part D claims and 62 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HELEN CHANDLER, NP's credentials?
HELEN CHANDLER, NP's NPI is 1518027671 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