NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1891776688 M.D.
Verify on CMS → Suzanne Koopmans, M.D.
Neurology Physician in Sacramento, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 19,885 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
2K
Medicare Part D claims · 315 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
94%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Suzanne Koopmans, M.D. filed 1,586 Medicare Part D claims in 2023 as a Neurology Physician in Sacramento, California, prescribing 94% generic.
- 2K
- Part D claims, 2023
- 94%
- 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.
Suzanne Koopmans, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,586 Top 19% higher than 81% 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 certification likely (heuristic, not verified)
Suzanne Koopmans, M.D. 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 Suzanne Koopmans, M.D.?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
1,586 21% vs specialty avg
Specialty distribution in California
How Neurology Physician compares to other specialties among California 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 Neurology 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).
Suzanne Koopmans, M.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D. credentials at 2315 STOCKTON BLVD, Sacramento, CA, 95817, with a listed phone of (916) 734-3514. NPI 1891776688 was issued on 11/08/2005.
Medicare Part D records for calendar year 2023 show 1,586 prescription claims written by this provider, covering 315 Medicare beneficiaries and totaling roughly $272K in drug spend, split 5% brand-name and 94% generic by claim count.
Neurology Physician is a mid-sized specialty nationwide, with 19,885 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 | 1891776688 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 11/08/2005 |
Hospital and facility affiliations
Facilities where Suzanne Koopmans, M.D. 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.
Permanente Medical Group Inc
Sacramento, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Suzanne Koopmans, M.D.. To verify Suzanne Koopmans, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Suzanne Koopmans, M.D. - brand share 5.0%
Neurology Physician average
5% brand-name claims vs 94% generic, on 1,586 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.
1,586
Total Claims
$272K
Total Drug Cost
315
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,993
- Total Day Supply
- 118,444
- Brand vs Generic
- 5% brand / 94% generic
- Brand Drug Cost
- $169K
- Generic Drug Cost
- $101K
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 1.74
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 66, 65-74: 127, 75-84: 92, 85+: 30
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Suzanne Koopmans, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Carbidopa-Levodopa
Carbidopa-Levodopa
238 claims
- Levetiracetam
Levetiracetam
129 claims
- Clonazepam 90
Clonazepam
90 claims
- Gabapentin 71
Gabapentin
71 claims
- Oxcarbazepine 64
Oxcarbazepine
64 claims
- Carbamazepine 59
Carbamazepine
59 claims
- Carbidopa-Levodopa… 56
Carbidopa-Levodopa Er
56 claims
- Baclofen 49
Baclofen
49 claims
| Drug | Claims |
|---|---|
| Carbidopa-Levodopa Carbidopa/Levodopa | 238 |
| Levetiracetam | 129 |
| Clonazepam | 90 |
| Gabapentin | 71 |
| Oxcarbazepine | 64 |
| Carbamazepine | 59 |
| Carbidopa-Levodopa Er Carbidopa/Levodopa | 56 |
| Baclofen | 49 |
| Lamotrigine | 49 |
| Amantadine Amantadine Hcl | 40 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Suzanne Koopmans, M.D. fits within the Neurology Physician landscape nationally.
19,885
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
Suzanne Koopmans, M.D.'s 1,586 claims are above the specialty average of 1,309.
Nearby Neurology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Koopmans.
Dr. Venkat Raghav Aachi
MD
Thousand Oaks, CA
Dr. John Aalbers
M.D.
San Diego, CA
Dr. Puya Abbassi
D.O.
San Jose, CA
Dr. Ahmed Abdelhak
MB CHB
San Francisco, CA
Dr. Justin Abraham
M.D., M.B.A.
Santa Barbara, CA
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 California 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 California
Frequently Asked Questions
What is Suzanne Koopmans, M.D.'s specialty? ▼
Suzanne Koopmans, M.D. specializes in Neurology Physician and practices in Sacramento, California. Credentials: M.D..
How much does Suzanne Koopmans, M.D. prescribe under Medicare Part D? ▼
In 2023, Suzanne Koopmans, M.D. wrote 1,586 Medicare Part D claims totaling $272K in drug costs for 315 beneficiaries.
Where is Suzanne Koopmans, M.D. located? ▼
Suzanne Koopmans, M.D. is located at 2315 STOCKTON BLVD, Sacramento, CA, 95817. Phone: (916) 734-3514.
What is Suzanne Koopmans, M.D.'s NPI number? ▼
Suzanne Koopmans, M.D.'s National Provider Identifier (NPI) is 1891776688, issued on 11/08/2005.
Does Suzanne Koopmans, M.D. prescribe more brand-name or generic drugs? ▼
Suzanne Koopmans, M.D.'s prescribing is 5% brand-name and 94% generic drugs by claim count, with $169K in brand drug costs.
How many Neurology Physician providers are there in the US? ▼
There are 19,885 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 Suzanne Koopmans, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Suzanne Koopmans, M.D.'s most frequently prescribed drugs include Carbidopa-Levodopa, Levetiracetam, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Suzanne Koopmans, M.D. accept Medicare? ▼
Suzanne Koopmans, M.D. appears in CMS Medicare data with 1,586 Part D claims and 315 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Suzanne Koopmans, M.D.'s credentials? ▼
Suzanne Koopmans, M.D.'s NPI is 1891776688 with credentials M.D.. 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.