NPI registry status
Active
2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1679744833 MD
Verify on CMS → Ralph Wang, MD
Physical Medicine & Rehabilitation 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 15,336 in Physical Medicine & Rehabilitation 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
676
Medicare Part D claims · 116 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781
Generic prescribing
86%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$33.64
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Ralph Wang, MD filed 676 Medicare Part D claims in 2023 as a Physical Medicine & Rehabilitation Physician in Grand Rapids, Michigan, prescribing 86% generic.
- 676
- Part D claims, 2023
- 86%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥69th
- pct by Part D claim volume (lower-bound band)
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 1679744833 · Physical Medicine & Rehabilitation Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1679744833
- ENUM-MID 2008
- TAX-MID 15K Physical Medicine
- RX-LIGHT 676
- BOOK-LIGHT 702 in Michigan
- PHOTO-ENUM Farah Hameed · 2008
Ralph Wang, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
676 ≥ 69th percentile 69% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Ralph Wang, 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 Ralph Wang, MD?
Quality data not reportedPrimary specialty
Physical Medicine & Rehabilitation Physician
Medicare Part D claims
676 13% vs specialty avg
Specialty distribution in Michigan
How Physical Medicine & Rehabilitation Physician compares to other specialties among Michigan 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 Physical Medicine & Rehabilitation 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 | 1679744833 |
|---|---|
| Specialty | Physical Medicine & Rehabilitation Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/17/2008 |
Hospital and facility affiliations
Facilities where Ralph Wang, 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.
Mary Free Bed Rehabilitation Hospital
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).
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 Ralph Wang, MD. Source: openpaymentsdata.cms.gov.
Total received
$34
Largest payer
Medtronic, 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.
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 Ralph Wang, MD. To verify Ralph Wang, 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 · Typical
Ralph Wang, MD - brand share 13.0%
Physical Medicine & Rehabilitation Physician average
13% brand-name claims vs 86% generic, on 676 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.
676
Total Claims
$43K
Total Drug Cost
116
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 704
- Total Day Supply
- 18,325
- Brand vs Generic
- 13% brand / 86% generic
- Brand Drug Cost
- $34K
- Generic Drug Cost
- $8K
- Opioid Claims
- 22 (3.3% rate)
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 71.2 years
- Avg HCC Risk Score
- 2.77
- Gender Split
- 42% female / 58% male
- Age Distribution
- <65: 21, 65-74: 48, 75-84: 36, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ralph Wang, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
34 claims
- Divalproex Sodium
Divalproex Sodium
25 claims
- Gabapentin
Gabapentin
24 claims
- Amlodipine Besylate
Amlodipine Besylate
23 claims
- Metoprolol Succinate
Metoprolol Succinate
21 claims
- Furosemide
Furosemide
19 claims
- Meloxicam
Meloxicam
19 claims
- Levothyroxine Sodium
Levothyroxine Sodium
18 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 34 |
| Divalproex Sodium | 25 |
| Gabapentin | 24 |
| Amlodipine Besylate | 23 |
| Metoprolol Succinate | 21 |
| Furosemide | 19 |
| Meloxicam | 19 |
| Levothyroxine Sodium | 18 |
| Trazodone Hcl | 17 |
| Pantoprazole Sodium | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Physical Medicine & Rehabilitation Physician in MI →
All providers in Michigan →
Compare specialties →
Physical Medicine & Rehabilitation Physician Overview
How Ralph Wang, MD fits within the Physical Medicine & Rehabilitation Physician landscape nationally.
15,336
Physical Medicine & Rehabilitation Physician Providers in US
54
States with Physical Medicine & Rehabilitation Physician
781
Avg Claims per Provider
Ralph Wang, MD's 676 claims are below the specialty average of 781.
Nationwide Physical Medicine & Rehabilitation Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Wang, both outside Michigan so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physical Medicine & Rehabilitation Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Wang.
One of 702 Physical Medicine & Rehabilitation Physician providers enrolled in Michigan, 5 are shown here.
Dr. Andrea Aagesen
D.O.
Ann Arbor, MI
Dr. Rachel Abouzaid
MD
Detroit, MI
Dr. Anne Abrahamson
MD
Wyandotte, MI
Dr. Shawn Achtman
D.O.
Royal Oak, MI
Dr. Michael Acosta
MD
Saginaw, MI
Compare Physical Medicine & Rehabilitation Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Ralph Wang, MD's specialty? ▼
Ralph Wang, MD specializes in Physical Medicine & Rehabilitation Physician and practices in Grand Rapids, Michigan. Credentials: MD.
How much does Ralph Wang, MD prescribe under Medicare Part D? ▼
In 2023, Ralph Wang, MD wrote 676 Medicare Part D claims totaling $43K in drug costs for 116 beneficiaries.
Where is Ralph Wang, MD located? ▼
Ralph Wang, MD is located at 235 WEALTHY ST SE, Grand Rapids, MI, 49503. Phone: (616) 840-8005.
What is Ralph Wang, MD's NPI number? ▼
Ralph Wang, MD's National Provider Identifier (NPI) is 1679744833, issued on 03/17/2008.
Does Ralph Wang, MD prescribe more brand-name or generic drugs? ▼
Ralph Wang, MD's prescribing is 13% brand-name and 86% generic drugs by claim count, with $34K in brand drug costs.
Does Ralph Wang, MD prescribe opioids? ▼
Yes, Ralph Wang, MD had 22 opioid claims in 2023 with an opioid prescribing rate of 3.3%.
How many Physical Medicine & Rehabilitation Physician providers are there in the US? ▼
There are 15,336 Physical Medicine & Rehabilitation Physician providers across 54 states in the US. The average Physical Medicine & Rehabilitation Physician provider writes 781 Medicare Part D claims per year.
What drugs does Ralph Wang, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Ralph Wang, MD's most frequently prescribed drugs include Atorvastatin Calcium, Divalproex Sodium, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ralph Wang, MD accept Medicare? ▼
Ralph Wang, MD appears in CMS Medicare data with 676 Part D claims and 116 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ralph Wang, MD's credentials? ▼
Ralph Wang, MD's NPI is 1679744833 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.
- 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.