NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1245202589 MD
Verify on CMS → Rhanni Herzfeld, MD
Neurology Physician in Washington, District of Columbia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 19,866 in Neurology 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
1K
Medicare Part D claims · 246 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
81.7/100
▼ 1 pts below national avg 83.1 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Rhanni Herzfeld, MD reported a CMS MIPS final score of 81.7/100 - below the 83.1 national average - and filed 1,201 Medicare Part D claims in 2023.
- 81.7/100
- MIPS score · -1 vs avg
- 1K
- Part D claims, 2023
- 88%
- 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.
Rhanni Herzfeld, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
82 36th percentile higher than 36% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Rhanni Herzfeld, MD sits
This provider among neurology physician peers
Across the 5,437 neurology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Rhanni Herzfeld, MD writes more Part D claims than 54% of them and scores higher on MIPS quality than 44% - placing this provider in the high-volume, lower-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 neurology physician peer from a representative sample of 60; the gold marker is Rhanni Herzfeld, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Rhanni Herzfeld, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Rhanni Herzfeld, MD?
Near national averagePrimary specialty
Neurology Physician
Medicare Part D claims
1,201 8% vs specialty avg
MIPS final score
81.7/100 1.4 pts vs avg
Specialty distribution in District of Columbia
How Neurology Physician compares to other specialties among District of Columbia providers
Medicare quality performance, MIPS
Rhanni Herzfeld, MD's 2023 MIPS final score plotted against the Neurology Physician national average
- MIPS Final Score
- 81.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Neurology Physician) - 81.7/100 vs national avg 83.1
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).
Rhanni Herzfeld, MD appears in the CMS NPPES registry as a Neurology Physician provider holding MD credentials at 2021 K ST NW STE 210, Washington, DC, 20006, with a listed phone of (301) 562-7200. NPI 1245202589 was issued on 02/02/2006.
Medicare Part D records for calendar year 2023 show 1,201 prescription claims written by this provider, covering 246 Medicare beneficiaries and totaling roughly $410K in drug spend, split 12% brand-name and 88% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.7/100 for the 2023 performance year (Quality 55.9, Cost 83), compared with the national average of 83.1.
Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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 | 1245202589 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 02/02/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
81.679
Final Score
Avg: 83.1
55.9381
Quality
82.9917
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Rhanni Herzfeld, 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.
Suburban/nrh Medical Rehabilitation Inc
Bethesda, MD
The Neurology Center
Washington, DC
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Rhanni Herzfeld, MD - brand share 12.0%
Neurology Physician average
12% brand-name claims vs 88% generic, on 1,201 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.
1,201
Total Claims
$410K
Total Drug Cost
246
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,649
- Total Day Supply
- 77,931
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $353K
- Generic Drug Cost
- $56K
Patient Demographics
- Average Patient Age
- 75.6 years
- Avg HCC Risk Score
- 0.92
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Rhanni Herzfeld, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
101 claims
- Carbidopa-Levodopa
Carbidopa-Levodopa
92 claims
- Memantine Hcl
Memantine Hcl
90 claims
- Donepezil Hcl
Donepezil Hcl
74 claims
- Levetiracetam
Levetiracetam
58 claims
- Propranolol Hcl Er
Propranolol Hcl Er
48 claims
- Sumatriptan Succin…
Sumatriptan Succinate
48 claims
- Nurtec Odt 36
Nurtec Odt
36 claims
| Drug | Claims |
|---|---|
| Gabapentin | 101 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 92 |
| Memantine Hcl | 90 |
| Donepezil Hcl | 74 |
| Levetiracetam | 58 |
| Propranolol Hcl Er Propranolol Hcl | 48 |
| Sumatriptan Succinate | 48 |
| Nurtec Odt Rimegepant Sulfate | 36 |
| Aimovig Autoinjector Erenumab-Aooe | 26 |
| Amitriptyline Hcl | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Rhanni Herzfeld, MD fits within the Neurology Physician landscape nationally.
19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
Rhanni Herzfeld, MD's 1,201 claims are below the specialty average of 1,309.
Nearby Neurology Physician Providers in District of Columbia
Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as Herzfeld.
Dr. Alice Adams
MD
Washington, DC
Dr. Ayesha Ahmad
M.D.
Washington, DC
Dr. Jessica Ailani
MD
Washington, DC
Dr. Rami Al-Hader
MD
Washington, DC
Dr. Sawsan Alabbad
MD
Washington, DC
Compare Neurology 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 District of Columbia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Neurology 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 District of Columbia
Frequently Asked Questions
What is Rhanni Herzfeld, MD's specialty? ▼
Rhanni Herzfeld, MD specializes in Neurology Physician and practices in Washington, District of Columbia. Credentials: MD.
How much does Rhanni Herzfeld, MD prescribe under Medicare Part D? ▼
In 2023, Rhanni Herzfeld, MD wrote 1,201 Medicare Part D claims totaling $410K in drug costs for 246 beneficiaries.
What is Rhanni Herzfeld, MD's Medicare quality score? ▼
Rhanni Herzfeld, MD has a CMS MIPS Final Score of 81.7/100 (Quality: 55.9, Cost: 83). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Rhanni Herzfeld, MD located? ▼
Rhanni Herzfeld, MD is located at 2021 K ST NW STE 210, Washington, DC, 20006. Phone: (301) 562-7200.
What is Rhanni Herzfeld, MD's NPI number? ▼
Rhanni Herzfeld, MD's National Provider Identifier (NPI) is 1245202589, issued on 02/02/2006.
Does Rhanni Herzfeld, MD prescribe more brand-name or generic drugs? ▼
Rhanni Herzfeld, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $353K in brand drug costs.
How many Neurology Physician providers are there in the US? ▼
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does Rhanni Herzfeld, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Rhanni Herzfeld, MD's most frequently prescribed drugs include Gabapentin, Carbidopa-Levodopa, Memantine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Rhanni Herzfeld, MD accept Medicare? ▼
Rhanni Herzfeld, MD appears in CMS Medicare data with 1,201 Part D claims and 246 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Rhanni Herzfeld, MD's credentials? ▼
Rhanni Herzfeld, MD's NPI is 1245202589 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
Compiled from official public sources by the PlainDoctor editorial team.