NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1164461562 M.D.
Verify on CMS → Shashidharan Ayer, M.D.
Nephrology Physician in Farmville, Virginia.
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
Generic prescribing
65%
generic claims · 34% 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
Shashidharan Ayer, M.D. filed 2,153 Medicare Part D claims in 2023 as a Nephrology Physician in Farmville, Virginia, prescribing 65% generic.
- 2K
- Part D claims, 2023
- 65%
- generic prescribing
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.
Shashidharan Ayer, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,153 Top 15% higher than 85% 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)
Shashidharan Ayer, M.D. 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 Shashidharan Ayer, M.D.?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
2,153 48% vs specialty avg
Specialty distribution in Virginia
How Nephrology Physician compares to other specialties among Virginia 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).
Shashidharan Ayer, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 1801 E 3RD ST, Farmville, VA, 23901, with a listed phone of (434) 392-7615. NPI 1164461562 was issued on 06/04/2006.
Medicare Part D records for calendar year 2023 show 2,153 prescription claims written by this provider, covering 216 Medicare beneficiaries and totaling roughly $783K in drug spend, split 34% brand-name and 65% generic by claim count, with an opioid prescribing rate of 0.7%.
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 | 1164461562 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/04/2006 |
Brand vs generic prescribing mix · Above average
Shashidharan Ayer, M.D. - brand share 34.0%
Nephrology Physician average
34% brand-name claims vs 65% generic, on 2,153 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.
2,153
Total Claims
$783K
Total Drug Cost
216
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,150
- Total Day Supply
- 123,257
- Brand vs Generic
- 34% brand / 65% generic
- Brand Drug Cost
- $722K
- Generic Drug Cost
- $60K
- Opioid Claims
- 15 (0.7% rate)
Patient Demographics
- Average Patient Age
- 72.4 years
- Avg HCC Risk Score
- 2.99
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 35, 65-74: 91, 75-84: 63, 85+: 27
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Shashidharan Ayer, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Farxiga
Farxiga
236 claims
- Amlodipine Besylate
Amlodipine Besylate
158 claims
- Losartan Potassium
Losartan Potassium
140 claims
- Atorvastatin Calcium 64
Atorvastatin Calcium
64 claims
- Ozempic 62
Ozempic
62 claims
- Doxazosin Mesylate 51
Doxazosin Mesylate
51 claims
- Sevelamer Carbonate 51
Sevelamer Carbonate
51 claims
- Spironolactone 48
Spironolactone
48 claims
| Drug | Claims |
|---|---|
| Farxiga Dapagliflozin Propanediol | 236 |
| Amlodipine Besylate | 158 |
| Losartan Potassium | 140 |
| Atorvastatin Calcium | 64 |
| Ozempic Semaglutide | 62 |
| Doxazosin Mesylate | 51 |
| Sevelamer Carbonate | 51 |
| Spironolactone | 48 |
| Furosemide | 43 |
| Trulicity Dulaglutide | 40 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Shashidharan Ayer, 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
Shashidharan Ayer, M.D.'s 2,153 claims are above the specialty average of 1,454.
Nearby Nephrology Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Ayer.
Dr. Mark Aarons
M.D.
Arlington, VA
Emaad Abdel-Rahman
Charlottesville, VA
Dr. Walid Abou Assi
M.D.
Richmond, VA
Dr. Christopher Acker
M.D.
Richmond, VA
Dr. Oscar Adler
M.D., PHD
Leesburg, VA
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 Virginia 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 Shashidharan Ayer, M.D.'s specialty? ▼
Shashidharan Ayer, M.D. specializes in Nephrology Physician and practices in Farmville, Virginia. Credentials: M.D..
How much does Shashidharan Ayer, M.D. prescribe under Medicare Part D? ▼
In 2023, Shashidharan Ayer, M.D. wrote 2,153 Medicare Part D claims totaling $783K in drug costs for 216 beneficiaries.
Where is Shashidharan Ayer, M.D. located? ▼
Shashidharan Ayer, M.D. is located at 1801 E 3RD ST, Farmville, VA, 23901. Phone: (434) 392-7615.
What is Shashidharan Ayer, M.D.'s NPI number? ▼
Shashidharan Ayer, M.D.'s National Provider Identifier (NPI) is 1164461562, issued on 06/04/2006.
Does Shashidharan Ayer, M.D. prescribe more brand-name or generic drugs? ▼
Shashidharan Ayer, M.D.'s prescribing is 34% brand-name and 65% generic drugs by claim count, with $722K in brand drug costs.
Does Shashidharan Ayer, M.D. prescribe opioids? ▼
Yes, Shashidharan Ayer, M.D. had 15 opioid claims in 2023 with an opioid prescribing rate of 0.7%.
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 Shashidharan Ayer, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Shashidharan Ayer, M.D.'s most frequently prescribed drugs include Farxiga, Amlodipine Besylate, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Shashidharan Ayer, M.D. accept Medicare? ▼
Shashidharan Ayer, M.D. appears in CMS Medicare data with 2,153 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 Shashidharan Ayer, M.D.'s credentials? ▼
Shashidharan Ayer, M.D.'s NPI is 1164461562 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.