NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1649292640 MD
Verify on CMS → Walter Rohloff, MD
Nephrology Physician in St Thomas, Virgin Islands.
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
2K
Medicare Part D claims · 216 beneficiaries · Nephrology Physician avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Walter Rohloff, MD filed 2,474 Medicare Part D claims in 2023 as a Nephrology Physician in St Thomas, Virgin Islands.
- 2K
- Part D claims, 2023
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.
Walter Rohloff, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,474 Top 14% higher than 86% 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-eligible specialty (heuristic, not verified)
Walter Rohloff, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Walter Rohloff, MD?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
2,474 70% vs specialty avg
Specialty distribution in Virgin Islands
How Nephrology Physician compares to other specialties among Virgin Islands 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).
Walter Rohloff, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 9149 ESTATE THOMAS STE 209A, St Thomas, VI, 00802, with a listed phone of (505) 563-2800. NPI 1649292640 was issued on 07/25/2006.
Medicare Part D records for calendar year 2023 show 2,474 prescription claims written by this provider, covering 216 Medicare beneficiaries and totaling roughly $557K in drug spend.
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 | 1649292640 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/25/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,474
Total Claims
$557K
Total Drug Cost
216
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,609
- Total Day Supply
- 105,124
- Generic Drug Cost
- $68K
- Antibiotic Claims
- 20
Patient Demographics
- Average Patient Age
- 76.9 years
- Avg HCC Risk Score
- 1.95
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 12, 65-74: 59, 75-84: 110, 85+: 35
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Walter Rohloff, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Nifedipine Er
Nifedipine Er
206 claims
- Rybelsus
Rybelsus
172 claims
- Atorvastatin Calcium
Atorvastatin Calcium
136 claims
- Metformin Hcl
Metformin Hcl
103 claims
- Olmesartan Medoxomil
Olmesartan Medoxomil
102 claims
- Amlodipine Besylate
Amlodipine Besylate
101 claims
- Torsemide
Torsemide
93 claims
- Famotidine
Famotidine
89 claims
| Drug | Claims |
|---|---|
| Nifedipine Er Nifedipine | 206 |
| Rybelsus Semaglutide | 172 |
| Atorvastatin Calcium | 136 |
| Metformin Hcl | 103 |
| Olmesartan Medoxomil | 102 |
| Amlodipine Besylate | 101 |
| Torsemide | 93 |
| Famotidine | 89 |
| Telmisartan | 83 |
| Trulicity Dulaglutide | 76 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Walter Rohloff, MD 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
Walter Rohloff, MD's 2,474 claims are above the specialty average of 1,454.
Nearby Nephrology Physician Providers in Virgin Islands
Other clinicians with the same primary specialty enrolled in Virgin Islands, drawn from the same CMS NPPES roster as Rohloff.
Dr. Wishburne Hunte
MD
St Thomas, VI
Dr. Ramesh Lakhram
M.D.
Christiansted, VI
Dr. Michael Sobel
DO
St Thomas, VI
Dr. Jan Tawakol
M.D.
Christiansted, VI
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 Virgin Islands 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.
Healthcare Guides
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How to Find a Doctor
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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 Virgin Islands
Frequently Asked Questions
What is Walter Rohloff, MD's specialty? ▼
Walter Rohloff, MD specializes in Nephrology Physician and practices in St Thomas, Virgin Islands. Credentials: MD.
How much does Walter Rohloff, MD prescribe under Medicare Part D? ▼
In 2023, Walter Rohloff, MD wrote 2,474 Medicare Part D claims totaling $557K in drug costs for 216 beneficiaries.
Where is Walter Rohloff, MD located? ▼
Walter Rohloff, MD is located at 9149 ESTATE THOMAS STE 209A, St Thomas, VI, 00802. Phone: (505) 563-2800.
What is Walter Rohloff, MD's NPI number? ▼
Walter Rohloff, MD's National Provider Identifier (NPI) is 1649292640, issued on 07/25/2006.
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 Walter Rohloff, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Walter Rohloff, MD's most frequently prescribed drugs include Nifedipine Er, Rybelsus, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Walter Rohloff, MD accept Medicare? ▼
Walter Rohloff, MD appears in CMS Medicare data with 2,474 Part D claims and 216 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Walter Rohloff, MD's credentials? ▼
Walter Rohloff, MD's NPI is 1649292640 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
Compiled from official public sources by the PlainDoctor editorial team.