NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1497746341 M.D.
Verify on CMS → Mary Shaver, M.D.
Nephrology Physician in Conway, Arkansas.
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 · 403 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.9K
88 payments · CMS Open Payments (Sunshine Act)
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
Mary Shaver, M.D. filed 4,265 Medicare Part D claims in 2023 as a Nephrology Physician in Conway, Arkansas, prescribing 88% generic.
- 4K
- Part D claims, 2023
- 88%
- 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.
Mary Shaver, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,265 Top 8% higher than 92% 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)
Mary Shaver, 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 Mary Shaver, M.D.?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
4,265 193% vs specialty avg
Specialty distribution in Arkansas
How Nephrology Physician compares to other specialties among Arkansas 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).
Mary Shaver, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 2445 CHRISTINA LN STE B, Conway, AR, 72034, with a listed phone of (501) 279-7077. NPI 1497746341 was issued on 10/31/2005.
Medicare Part D records for calendar year 2023 show 4,265 prescription claims written by this provider, covering 403 Medicare beneficiaries and totaling roughly $538K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 0.4%.
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 | 1497746341 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 10/31/2005 |
Hospital and facility affiliations
Facilities where Mary Shaver, 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.
Nephrology Associates PA
Benton, AR
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 Mary Shaver, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.9K
Largest payer
Amgen 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.
Brand vs generic prescribing mix · Typical
Mary Shaver, M.D. - brand share 12.0%
Nephrology Physician average
12% brand-name claims vs 88% generic, on 4,265 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.
4,265
Total Claims
$538K
Total Drug Cost
403
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,982
- Total Day Supply
- 199,729
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $440K
- Generic Drug Cost
- $97K
- Opioid Claims
- 16 (0.4% rate)
- Antibiotic Claims
- 75
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 3.44
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 84, 65-74: 138, 75-84: 126, 85+: 55
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mary Shaver, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Allopurinol
Allopurinol
267 claims
- Furosemide
Furosemide
242 claims
- Nifedipine Er
Nifedipine Er
223 claims
- Carvedilol
Carvedilol
219 claims
- Atorvastatin Calcium
Atorvastatin Calcium
166 claims
- Amlodipine Besylate
Amlodipine Besylate
158 claims
- Hydralazine Hcl
Hydralazine Hcl
156 claims
- Calcitriol
Calcitriol
146 claims
| Drug | Claims |
|---|---|
| Allopurinol | 267 |
| Furosemide | 242 |
| Nifedipine Er Nifedipine | 223 |
| Carvedilol | 219 |
| Atorvastatin Calcium | 166 |
| Amlodipine Besylate | 158 |
| Hydralazine Hcl | 156 |
| Calcitriol | 146 |
| Potassium Chloride | 121 |
| Prosol Parenteral Amino Acid 20% No.1 | 110 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Mary Shaver, 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
Mary Shaver, M.D.'s 4,265 claims are above the specialty average of 1,454.
Nearby Nephrology Physician Providers in Arkansas
Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as Shaver.
Dr. Hania Al-Shahrouri
MD
Fort Smith, AR
Dr. Muhammad Alam
MD, MPH
Little Rock, AR
Dr. Shamsul Alam
M.D.
Bentonville, AR
Umair Ali
Little Rock, AR
Dr. John Arthur
MD
Little Rock, AR
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 Arkansas 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 Mary Shaver, M.D.'s specialty? ▼
Mary Shaver, M.D. specializes in Nephrology Physician and practices in Conway, Arkansas. Credentials: M.D..
How much does Mary Shaver, M.D. prescribe under Medicare Part D? ▼
In 2023, Mary Shaver, M.D. wrote 4,265 Medicare Part D claims totaling $538K in drug costs for 403 beneficiaries.
Where is Mary Shaver, M.D. located? ▼
Mary Shaver, M.D. is located at 2445 CHRISTINA LN STE B, Conway, AR, 72034. Phone: (501) 279-7077.
What is Mary Shaver, M.D.'s NPI number? ▼
Mary Shaver, M.D.'s National Provider Identifier (NPI) is 1497746341, issued on 10/31/2005.
Does Mary Shaver, M.D. prescribe more brand-name or generic drugs? ▼
Mary Shaver, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $440K in brand drug costs.
Does Mary Shaver, M.D. prescribe opioids? ▼
Yes, Mary Shaver, M.D. had 16 opioid claims in 2023 with an opioid prescribing rate of 0.4%.
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 Mary Shaver, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary Shaver, M.D.'s most frequently prescribed drugs include Allopurinol, Furosemide, Nifedipine Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Shaver, M.D. accept Medicare? ▼
Mary Shaver, M.D. appears in CMS Medicare data with 4,265 Part D claims and 403 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Shaver, M.D.'s credentials? ▼
Mary Shaver, M.D.'s NPI is 1497746341 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.