NPI registry status
Active
2026 NPPES data Medical Toxicology (Emergency Medicine) Physician NPI 1689203846 MD
Verify on CMS → Danae Massengill, MD
Medical Toxicology (Emergency Medicine) Physician in Aurora, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 228 in Medical Toxicology (Emergency Medicine) 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.
What the federal data shows
Danae Massengill, MD is a Medical Toxicology (Emergency Medicine) Physician in Aurora, Colorado, listed in the federal CMS National Provider Identifier registry.
- Likely
- board-certified (heuristic)
- #322
- Medical Toxicology (Emergency Medicine) Physician rank among Colorado specialties
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.
CMS NPPES provider registry desk
NPI 1689203846 · Medical Toxicology (Emergency Medicine) Physician
NPI-10 · ENUM-RECENT · TAX-TRACE · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1689203846
- ENUM-RECENT 2020
- TAX-TRACE 228
- RX-NONE No Part D
- BOOK-THIN 12 in Colorado
- PHOTO-ENUM Conor Young · 2020
✓
Board certification likely (heuristic, not verified)
Danae Massengill, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Danae Massengill, MD?
Quality data not reportedPrimary specialty
Medical Toxicology (Emergency Medicine) Physician
Specialty distribution in Colorado
How Medical Toxicology (Emergency Medicine) Physician compares to other specialties among Colorado 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 Medical Toxicology (Emergency Medicine) 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).
Practice Address
Provider Details
| NPI | 1689203846 |
|---|---|
| Specialty | Medical Toxicology (Emergency Medicine) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 04/08/2020 |
Hospital and facility affiliations
Facilities where Danae Massengill, MD 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.
Denver Health And Hospital Authority
Denver, CO
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
More Medical Toxicology (Emergency Medicine) Physician in CO →
All providers in Colorado →
Compare specialties →
Medical Toxicology (Emergency Medicine) Physician Overview
How Danae Massengill, MD fits within the Medical Toxicology (Emergency Medicine) Physician landscape nationally.
228
Medical Toxicology (Emergency Medicine) Physician Providers in US
39
States with Medical Toxicology (Emergency Medicine) Physician
329
Avg Claims per Provider
Nationwide Medical Toxicology (Emergency Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Massengill, both outside Colorado so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Medical Toxicology (Emergency Medicine) Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Massengill.
One of 12 Medical Toxicology (Emergency Medicine) Physician providers enrolled in Colorado, 5 are shown here.
Frequently Asked Questions
What is Danae Massengill, MD's specialty? ▼
Danae Massengill, MD specializes in Medical Toxicology (Emergency Medicine) Physician and practices in Aurora, Colorado. Credentials: MD.
Where is Danae Massengill, MD located? ▼
Danae Massengill, MD is located at 13123 E 16TH AVE, Aurora, CO, 80045. Phone: (720) 777-1234.
What is Danae Massengill, MD's NPI number? ▼
Danae Massengill, MD's National Provider Identifier (NPI) is 1689203846, issued on 04/08/2020.
How many Medical Toxicology (Emergency Medicine) Physician providers are there in the US? ▼
There are 228 Medical Toxicology (Emergency Medicine) Physician providers across 39 states in the US. The average Medical Toxicology (Emergency Medicine) Physician provider writes 329 Medicare Part D claims per year.
Does Danae Massengill, MD accept Medicare? ▼
Danae Massengill, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Danae Massengill, MD's credentials? ▼
Danae Massengill, MD's NPI is 1689203846 with credentials MD. 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.
- 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.