2026 NPPES data Registered Dietitian NPI 1558810382 RD, CDE
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MARTHA BROWN, RD, CDE

Registered Dietitian in COTTONWOOD, 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.
What the federal data reveals: MARTHA BROWN, RD, CDE is a Registered Dietitian ([object Object]) practicing in COTTONWOOD, Arizona .

What stands out: MARTHA BROWN, RD, CDE specializes in Registered Dietitian and practices in COTTONWOOD, Arizona, listed in the federal CMS National Provider Identifier registry. Every detail on this page comes straight from federal CMS records, with no proprietary rating applied.

MARTHA BROWN, RD, CDE at a glance

Quality data not reported

NPI registry status

Active

Issued 09/21/2016

NPI 1558810382

Primary specialty

Registered Dietitian

High-volume

64,100 US NPIs in this specialty

Specialty distribution in Arizona

How Registered Dietitian compares to other specialties among Arizona providers

Arizona providers

Registered Dietitian share within Arizona

1. Registered Dietitian42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Registered Dietitian share within Arizona

Specialty board-certification context

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

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

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

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

MARTHA BROWN, RD, CDE is a Registered Dietitian provider practicing in COTTONWOOD, Arizona, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: RD, CDE. NPI: 1558810382. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

MARTHA BROWN, RD, CDE appears in the CMS NPPES registry as a Registered Dietitian provider holding RD, CDE credentials at 269 S CANDY LN, COTTONWOOD, AZ, 86326, with a listed phone of (928) 639-6531. NPI 1558810382 was issued on 09/21/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BROWN 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 prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Registered Dietitian providers operate outside Part D entirely.

Registered Dietitian is a high-volume specialty nationwide, with 64,100 enrolled providers across 55 states and an average of 696 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

269 S CANDY LN
COTTONWOOD, AZ 86326

Provider Details

NPI 1558810382
Specialty Registered Dietitian
Credentials RD, CDE
Gender Female
NPI Issued 09/21/2016

Registered Dietitian Overview

How MARTHA BROWN, RD, CDE fits within the Registered Dietitian landscape nationally.

64,100
Registered Dietitian Providers in US
55
States with Registered Dietitian
696
Avg Claims per Provider

Nearby Registered Dietitian Providers in Arizona

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

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

Frequently Asked Questions

What is MARTHA BROWN, RD, CDE's specialty?
MARTHA BROWN, RD, CDE specializes in Registered Dietitian and practices in COTTONWOOD, Arizona. Credentials: RD, CDE.
Where is MARTHA BROWN, RD, CDE located?
MARTHA BROWN, RD, CDE is located at 269 S CANDY LN, COTTONWOOD, AZ, 86326. Phone: (928) 639-6531.
What is MARTHA BROWN, RD, CDE's NPI number?
MARTHA BROWN, RD, CDE's National Provider Identifier (NPI) is 1558810382, issued on 09/21/2016.
How many Registered Dietitian providers are there in the US?
There are 64,100 Registered Dietitian providers across 55 states in the US. The average Registered Dietitian provider writes 696 Medicare Part D claims per year.
Does MARTHA BROWN, RD, CDE accept Medicare?
MARTHA BROWN, RD, CDE appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARTHA BROWN, RD, CDE's credentials?
MARTHA BROWN, RD, CDE's NPI is 1558810382 with credentials RD, CDE. 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.
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