NPI registry status
Active
2026 NPPES data Neuromuscular Medicine (Psychiatry & Neurology) Physician NPI 1265725147 MD
Verify on CMS → Andrew Mundwiler, MD
Neuromuscular Medicine (Psychiatry & Neurology) Physician in Grand Rapids, Michigan.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 338 in Neuromuscular Medicine (Psychiatry & 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
789
Medicare Part D claims · 139 beneficiaries · Neuromuscular Medicine (Psychiatry & Neurology) Physician avg: 931
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
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
Andrew Mundwiler, MD reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 789 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 789
- Part D claims, 2023
- 93%
- 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.
Andrew Mundwiler, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% 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 Andrew Mundwiler, MD sits
This provider among neuromuscular medicine (psychiatry & neurology) physician peers
Across the 132 neuromuscular medicine (psychiatry & neurology) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Andrew Mundwiler, MD writes more Part D claims than 55% of them and scores higher on MIPS quality than 90% - placing this provider in the high-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 neuromuscular medicine (psychiatry & neurology) physician peer from a representative sample of 60; the gold marker is Andrew Mundwiler, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Andrew Mundwiler, 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 Andrew Mundwiler, MD?
High performer (top quartile)Primary specialty
Neuromuscular Medicine (Psychiatry & Neurology) Physician
Medicare Part D claims
789 15% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in Michigan
How Neuromuscular Medicine (Psychiatry & Neurology) Physician compares to other specialties among Michigan providers
Medicare quality performance, MIPS
Andrew Mundwiler, MD's 2023 MIPS final score plotted against the Neuromuscular Medicine (Psychiatry & Neurology) Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Neuromuscular Medicine (Psychiatry & Neurology) Physician) - 100/100 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).
Andrew Mundwiler, MD appears in the CMS NPPES registry as a Neuromuscular Medicine (Psychiatry & Neurology) Physician provider holding MD credentials at 25 MICHIGAN ST NE, Grand Rapids, MI, 49503, with a listed phone of (616) 267-7900. NPI 1265725147 was issued on 05/25/2011.
Medicare Part D records for calendar year 2023 show 789 prescription claims written by this provider, covering 139 Medicare beneficiaries and totaling roughly $582K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 2.7%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 87.5), compared with the national average of 83.1.
Neuromuscular Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 338 enrolled providers across 44 states and an average of 931 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 | 1265725147 |
|---|---|
| Specialty | Neuromuscular Medicine (Psychiatry & Neurology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/25/2011 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
87.5432
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Andrew Mundwiler, 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.
Spectrum Health Primary Care Partners
Grand Rapids, MI
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 - Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 - they are NOT specific to Andrew Mundwiler, MD. To verify Andrew Mundwiler, MD's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases
MI-BOM 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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Andrew Mundwiler, MD - brand share 7.0%
Neuromuscular Medicine (Psychiatry & Neurology) Physician average
7% brand-name claims vs 93% generic, on 789 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.
789
Total Claims
$582K
Total Drug Cost
139
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,257
- Total Day Supply
- 36,639
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $543K
- Generic Drug Cost
- $38K
- Opioid Claims
- 21 (2.7% rate)
Patient Demographics
- Average Patient Age
- 71.3 years
- Avg HCC Risk Score
- 1.65
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Andrew Mundwiler, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
219 claims
- Prednisone
Prednisone
93 claims
- Duloxetine Hcl
Duloxetine Hcl
91 claims
- Pregabalin 62
Pregabalin
62 claims
- Pyridostigmine Bro… 54
Pyridostigmine Bromide
54 claims
- Mycophenolate Mofe… 49
Mycophenolate Mofetil
49 claims
- Riluzole 29
Riluzole
29 claims
- Nortriptyline Hcl 21
Nortriptyline Hcl
21 claims
| Drug | Claims |
|---|---|
| Gabapentin | 219 |
| Prednisone | 93 |
| Duloxetine Hcl | 91 |
| Pregabalin | 62 |
| Pyridostigmine Bromide | 54 |
| Mycophenolate Mofetil | 49 |
| Riluzole | 29 |
| Nortriptyline Hcl | 21 |
| Gamunex-C Immune Globul G/Gly/Iga Avg 46 | 16 |
| Baclofen | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Neuromuscular Medicine (Psychiatry & Neurology) Physician in MI →
All providers in Michigan →
Compare specialties →
Neuromuscular Medicine (Psychiatry & Neurology) Physician Overview
How Andrew Mundwiler, MD fits within the Neuromuscular Medicine (Psychiatry & Neurology) Physician landscape nationally.
338
Neuromuscular Medicine (Psychiatry & Neurology) Physician Providers in US
44
States with Neuromuscular Medicine (Psychiatry & Neurology) Physician
931
Avg Claims per Provider
Andrew Mundwiler, MD's 789 claims are below the specialty average of 931.
Nearby Neuromuscular Medicine (Psychiatry & Neurology) Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Mundwiler.
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 Michigan medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Neuromuscular Medicine (Psychiatry & 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.
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Frequently Asked Questions
What is Andrew Mundwiler, MD's specialty? ▼
Andrew Mundwiler, MD specializes in Neuromuscular Medicine (Psychiatry & Neurology) Physician and practices in Grand Rapids, Michigan. Credentials: MD.
How much does Andrew Mundwiler, MD prescribe under Medicare Part D? ▼
In 2023, Andrew Mundwiler, MD wrote 789 Medicare Part D claims totaling $582K in drug costs for 139 beneficiaries.
What is Andrew Mundwiler, MD's Medicare quality score? ▼
Andrew Mundwiler, MD has a CMS MIPS Final Score of 100/100 (Quality: 87.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Andrew Mundwiler, MD located? ▼
Andrew Mundwiler, MD is located at 25 MICHIGAN ST NE, Grand Rapids, MI, 49503. Phone: (616) 267-7900.
What is Andrew Mundwiler, MD's NPI number? ▼
Andrew Mundwiler, MD's National Provider Identifier (NPI) is 1265725147, issued on 05/25/2011.
Does Andrew Mundwiler, MD prescribe more brand-name or generic drugs? ▼
Andrew Mundwiler, MD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $543K in brand drug costs.
Does Andrew Mundwiler, MD prescribe opioids? ▼
Yes, Andrew Mundwiler, MD had 21 opioid claims in 2023 with an opioid prescribing rate of 2.7%.
How many Neuromuscular Medicine (Psychiatry & Neurology) Physician providers are there in the US? ▼
There are 338 Neuromuscular Medicine (Psychiatry & Neurology) Physician providers across 44 states in the US. The average Neuromuscular Medicine (Psychiatry & Neurology) Physician provider writes 931 Medicare Part D claims per year.
What drugs does Andrew Mundwiler, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Andrew Mundwiler, MD's most frequently prescribed drugs include Gabapentin, Prednisone, Duloxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Andrew Mundwiler, MD accept Medicare? ▼
Andrew Mundwiler, MD appears in CMS Medicare data with 789 Part D claims and 139 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Andrew Mundwiler, MD's credentials? ▼
Andrew Mundwiler, MD's NPI is 1265725147 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.