NPI registry status
Active
2026 NPPES data Pediatric Endocrinology Physician NPI 1518227016 DO
Verify on CMS → Melissa Chambers, DO
Pediatric Endocrinology Physician in Phoenix, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,459 in Pediatric Endocrinology Physician, 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
11
Medicare Part D claims · Pediatric Endocrinology Physician avg: 151
Industry payments
$363.28
18 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Melissa Chambers, DO filed 11 Medicare Part D claims in 2023 as a Pediatric Endocrinology Physician in Phoenix, Arizona.
- 11
- Part D claims, 2023
- $363.28
- 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.
Melissa Chambers, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
11 0th percentile higher than 0% of 1,370,886 prescribers
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
◑
Board-eligible specialty (heuristic, not verified)
Melissa Chambers, DO practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Melissa Chambers, DO?
Quality data not reportedPrimary specialty
Pediatric Endocrinology Physician
Medicare Part D claims
11 93% vs specialty avg
Specialty distribution in Arizona
How Pediatric Endocrinology Physician compares to other specialties among Arizona providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Pediatric Endocrinology Physician. Verify directly:
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).
Melissa Chambers, DO appears in the CMS NPPES registry as a Pediatric Endocrinology Physician provider holding DO credentials at 1919 E THOMAS RD, Phoenix, AZ, 85016, with a listed phone of (602) 933-0935. NPI 1518227016 was issued on 05/18/2012.
Medicare Part D records for calendar year 2023 show 11 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $198 in drug spend.
Pediatric Endocrinology Physician is a narrow specialty nationwide, with 1,459 enrolled providers across 51 states and an average of 151 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
Provider Details
| NPI | 1518227016 |
|---|---|
| Specialty | Pediatric Endocrinology Physician |
| Credentials | DO |
| Gender | Female |
| NPI Issued | 05/18/2012 |
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 Melissa Chambers, DO. Source: openpaymentsdata.cms.gov.
Total received
$363
Largest payer
SANOFI-AVENTIS U.S. LLC
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
11
Total Claims
$198
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 29
- Total Day Supply
- 845
Patient Demographics
- Average Patient Age
- 34.7 years
- Avg HCC Risk Score
- 0.64
Pediatric Endocrinology Physician Overview
How Melissa Chambers, DO fits within the Pediatric Endocrinology Physician landscape nationally.
1,459
Pediatric Endocrinology Physician Providers in US
51
States with Pediatric Endocrinology Physician
151
Avg Claims per Provider
Melissa Chambers, DO's 11 claims are below the specialty average of 151.
Nearby Pediatric Endocrinology Physician Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Chambers.
Dr. Anna Binkiewicz
MD
Tucson, AZ
Dr. Amanda Campos
M.D.
Phoenix, AZ
Dr. Cindy Chin
MD
Tucson, AZ
Dr. Robert Ganelin
MD
Phoenix, AZ
Dr. Robert Gonsalves
DO
Phoenix, AZ
Compare Pediatric Endocrinology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Arizona medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pediatric Endocrinology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Arizona
Frequently Asked Questions
What is Melissa Chambers, DO's specialty? ▼
Melissa Chambers, DO specializes in Pediatric Endocrinology Physician and practices in Phoenix, Arizona. Credentials: DO.
How much does Melissa Chambers, DO prescribe under Medicare Part D? ▼
In 2023, Melissa Chambers, DO wrote 11 Medicare Part D claims totaling $198 in drug costs for N/A beneficiaries.
Where is Melissa Chambers, DO located? ▼
Melissa Chambers, DO is located at 1919 E THOMAS RD, Phoenix, AZ, 85016. Phone: (602) 933-0935.
What is Melissa Chambers, DO's NPI number? ▼
Melissa Chambers, DO's National Provider Identifier (NPI) is 1518227016, issued on 05/18/2012.
How many Pediatric Endocrinology Physician providers are there in the US? ▼
There are 1,459 Pediatric Endocrinology Physician providers across 51 states in the US. The average Pediatric Endocrinology Physician provider writes 151 Medicare Part D claims per year.
Does Melissa Chambers, DO accept Medicare? ▼
Melissa Chambers, DO appears in CMS Medicare data with 11 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Melissa Chambers, DO's credentials? ▼
Melissa Chambers, DO's NPI is 1518227016 with credentials DO. 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.
- 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
Compiled from official public sources by the PlainDoctor editorial team.
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.