NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1891726626 M.D.
Verify on CMS → Robert Neuwirth, M.D.
Nephrology Physician in Gillette, Wyoming.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,534 in Nephrology 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
4K
Medicare Part D claims · 571 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
84%
generic claims · 15% 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
Robert Neuwirth, M.D. filed 3,603 Medicare Part D claims in 2023 as a Nephrology Physician in Gillette, Wyoming, prescribing 84% generic.
- 4K
- Part D claims, 2023
- 84%
- 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.
Robert Neuwirth, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,603 Top 9% higher than 91% 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)
Robert Neuwirth, 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 Robert Neuwirth, M.D.?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
3,603 148% vs specialty avg
Specialty distribution in Wyoming
How Nephrology Physician compares to other specialties among Wyoming 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 Nephrology 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).
Robert Neuwirth, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 501 S. BURMA AVE, Gillette, WY, 82716, with a listed phone of (307) 688-3535. NPI 1891726626 was issued on 07/06/2006.
Medicare Part D records for calendar year 2023 show 3,603 prescription claims written by this provider, covering 571 Medicare beneficiaries and totaling roughly $435K in drug spend, split 15% brand-name and 84% generic by claim count, with an opioid prescribing rate of 2.2%.
Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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 | 1891726626 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/06/2006 |
Hospital and facility affiliations
Facilities where Robert Neuwirth, 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.
Campbell County Hospital District
Gillette, WY
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
Robert Neuwirth, M.D. - brand share 15.0%
Nephrology Physician average
15% brand-name claims vs 84% generic, on 3,603 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.
3,603
Total Claims
$435K
Total Drug Cost
571
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 8,405
- Total Day Supply
- 249,082
- Brand vs Generic
- 15% brand / 84% generic
- Brand Drug Cost
- $368K
- Generic Drug Cost
- $65K
- Opioid Claims
- 79 (2.2% rate)
- Antibiotic Claims
- 33
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 1.53
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 67, 65-74: 291, 75-84: 170, 85+: 43
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Robert Neuwirth, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
198 claims
- Atorvastatin Calcium
Atorvastatin Calcium
189 claims
- Pantoprazole Sodium
Pantoprazole Sodium
136 claims
- Gabapentin
Gabapentin
135 claims
- Metformin Hcl
Metformin Hcl
124 claims
- Amlodipine Besylate
Amlodipine Besylate
109 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
109 claims
- Losartan Potassium
Losartan Potassium
104 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 198 |
| Atorvastatin Calcium | 189 |
| Pantoprazole Sodium | 136 |
| Gabapentin | 135 |
| Metformin Hcl | 124 |
| Amlodipine Besylate | 109 |
| Rosuvastatin Calcium | 109 |
| Losartan Potassium | 104 |
| Metoprolol Succinate | 104 |
| Furosemide | 79 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Robert Neuwirth, M.D. fits within the Nephrology Physician landscape nationally.
10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Robert Neuwirth, M.D.'s 3,603 claims are above the specialty average of 1,454.
Nearby Nephrology Physician Providers in Wyoming
Other clinicians with the same primary specialty enrolled in Wyoming, drawn from the same CMS NPPES roster as Neuwirth.
Dr. Jean Halpern
MD
Cheyenne, WY
Dr. Ageselaos Meares
MD
Cheyenne, WY
Dr. Robert Neff
M.D.
Casper, WY
Dr. Rahul Pawar
MD
Rock Springs, WY
Dr. Eric Sawyers
MD
Casper, WY
Compare Nephrology 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 Wyoming medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nephrology 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 Robert Neuwirth, M.D.'s specialty? ▼
Robert Neuwirth, M.D. specializes in Nephrology Physician and practices in Gillette, Wyoming. Credentials: M.D..
How much does Robert Neuwirth, M.D. prescribe under Medicare Part D? ▼
In 2023, Robert Neuwirth, M.D. wrote 3,603 Medicare Part D claims totaling $435K in drug costs for 571 beneficiaries.
Where is Robert Neuwirth, M.D. located? ▼
Robert Neuwirth, M.D. is located at 501 S. BURMA AVE, Gillette, WY, 82716. Phone: (307) 688-3535.
What is Robert Neuwirth, M.D.'s NPI number? ▼
Robert Neuwirth, M.D.'s National Provider Identifier (NPI) is 1891726626, issued on 07/06/2006.
Does Robert Neuwirth, M.D. prescribe more brand-name or generic drugs? ▼
Robert Neuwirth, M.D.'s prescribing is 15% brand-name and 84% generic drugs by claim count, with $368K in brand drug costs.
Does Robert Neuwirth, M.D. prescribe opioids? ▼
Yes, Robert Neuwirth, M.D. had 79 opioid claims in 2023 with an opioid prescribing rate of 2.2%.
How many Nephrology Physician providers are there in the US? ▼
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Robert Neuwirth, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Robert Neuwirth, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Neuwirth, M.D. accept Medicare? ▼
Robert Neuwirth, M.D. appears in CMS Medicare data with 3,603 Part D claims and 571 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Neuwirth, M.D.'s credentials? ▼
Robert Neuwirth, M.D.'s NPI is 1891726626 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.