NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1982637468 MD
Verify on CMS → Mariette Riemann, MD
Emergency Medicine Physician in Charlotte, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 64,463 in 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.
Prescribing volume
121
Medicare Part D claims · 55 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.5 · Exceptional
Industry payments
$68.83
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mariette Riemann, MD reported a CMS MIPS final score of 100/100 - above the 83.5 national average - and filed 121 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 121
- Part D claims, 2023
- 81%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Mariette Riemann, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
100 ≥ 92nd percentile 92% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mariette Riemann, MD sits
This provider among emergency medicine physician peers
Across the 14,017 emergency medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mariette Riemann, MD writes more Part D claims than 41% of them and scores higher on MIPS quality than 91% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one emergency medicine physician peer from a representative sample of 60; the gold marker is Mariette Riemann, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Mariette Riemann, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Mariette Riemann, MD?
High performer (top quartile)Primary specialty
Emergency Medicine Physician
Medicare Part D claims
121 66% vs specialty avg
MIPS final score
100/100 16.5 pts vs avg
Specialty distribution in North Carolina
How Emergency Medicine Physician compares to other specialties among North Carolina providers
Medicare quality performance, MIPS
Mariette Riemann, MD's 2023 MIPS final score plotted against the Emergency Medicine Physician national average
- MIPS Final Score
- 100/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Emergency Medicine Physician) - 100/100 vs national avg 83.5
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).
Mariette Riemann, MD appears in the CMS NPPES registry as an Emergency Medicine Physician provider holding MD credentials at 101 E W T HARRIS BLVD, Charlotte, NC, 28262, with a listed phone of (704) 863-9300. NPI 1982637468 was issued on 07/08/2006.
Medicare Part D records for calendar year 2023 show 121 prescription claims written by this provider, covering 55 Medicare beneficiaries and totaling roughly $30K in drug spend, split 19% brand-name and 81% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year, compared with the 83.5 average among clinicians with a measured score.
Emergency Medicine Physician is a high-volume specialty nationwide, with 64,463 enrolled providers across 56 states and an average of 352 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 | 1982637468 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 07/08/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Measured-score avg: 83.5
99
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mariette Riemann, 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.
The Charlotte-Mecklenburg Hospital Authority
Charlotte, NC
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Mariette Riemann, MD. Source: openpaymentsdata.cms.gov.
Total received
$69
Largest payer
PFIZER INC.
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.
Brand vs generic prescribing mix · Typical
Mariette Riemann, MD - brand share 19.0%
Emergency Medicine Physician average
19% brand-name claims vs 81% generic, on 121 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
121
Total Claims
$30K
Total Drug Cost
55
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 123
- Total Day Supply
- 1,916
- Brand vs Generic
- 19% brand / 81% generic
- Brand Drug Cost
- $21K
- Generic Drug Cost
- $9K
- Antibiotic Claims
- 82
Patient Demographics
- Average Patient Age
- 70.0 years
- Avg HCC Risk Score
- 3.96
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 17, 65-74: 17, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mariette Riemann, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Doxycycline Hyclate
Doxycycline Hyclate
28 claims
- Santyl
Santyl
19 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
13 claims
- Sulfamethoxazole-T…
Sulfamethoxazole-Trimethoprim
12 claims
| Drug | Claims |
|---|---|
| Doxycycline Hyclate | 28 |
| Santyl Collagenase Clostridium Hist. | 19 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 13 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Emergency Medicine Physician Overview
How Mariette Riemann, MD fits within the Emergency Medicine Physician landscape nationally.
64,463
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider
Mariette Riemann, MD's 121 claims are below the specialty average of 352.
Nearby Emergency Medicine Physician Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Riemann.
Stephanny Acevedo Martinez
Greenville, NC
Dr. Joanna Adams
M.D.
Greenville, NC
Dr. John Adams
M.D.
Oxford, NC
Dr. Victor Adan
MD
Franklin, NC
Dr. Juliana Adedoyin
MD
Greenville, NC
Compare Emergency Medicine 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 North Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Emergency Medicine 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
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
Telehealth Guide
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Explore North Carolina
Frequently Asked Questions
What is Mariette Riemann, MD's specialty? ▼
Mariette Riemann, MD specializes in Emergency Medicine Physician and practices in Charlotte, North Carolina. Credentials: MD.
How much does Mariette Riemann, MD prescribe under Medicare Part D? ▼
In 2023, Mariette Riemann, MD wrote 121 Medicare Part D claims totaling $30K in drug costs for 55 beneficiaries.
What is Mariette Riemann, MD's Medicare quality score? ▼
Mariette Riemann, MD has a CMS MIPS Final Score of 100/100. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mariette Riemann, MD located? ▼
Mariette Riemann, MD is located at 101 E W T HARRIS BLVD, Charlotte, NC, 28262. Phone: (704) 863-9300.
What is Mariette Riemann, MD's NPI number? ▼
Mariette Riemann, MD's National Provider Identifier (NPI) is 1982637468, issued on 07/08/2006.
Does Mariette Riemann, MD prescribe more brand-name or generic drugs? ▼
Mariette Riemann, MD's prescribing is 19% brand-name and 81% generic drugs by claim count, with $21K in brand drug costs.
How many Emergency Medicine Physician providers are there in the US? ▼
There are 64,463 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does Mariette Riemann, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mariette Riemann, MD's most frequently prescribed drugs include Doxycycline Hyclate, Santyl, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mariette Riemann, MD accept Medicare? ▼
Mariette Riemann, MD appears in CMS Medicare data with 121 Part D claims and 55 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mariette Riemann, MD's credentials? ▼
Mariette Riemann, MD's NPI is 1982637468 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.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.