NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1649484783 MD
Verify on CMS → Nagashree Gundu Rao, MD
Endocrinology, Diabetes & Metabolism Physician in Ashburn, 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 7,871 in Endocrinology, Diabetes & Metabolism 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
637
Medicare Part D claims · 121 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
44%
generic claims · 50% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
81.3/100
▼ 2 pts below national avg 83.1 · Above neutral
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
Nagashree Gundu Rao, MD reported a CMS MIPS final score of 81.3/100 - below the 83.1 national average - and filed 637 Medicare Part D claims in 2023.
- 81.3/100
- MIPS score · -2 vs avg
- 637
- Part D claims, 2023
- 44%
- 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.
Nagashree Gundu Rao, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
81 36th percentile higher than 36% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Nagashree Gundu Rao, MD sits
This provider among endocrinology, diabetes & metabolism physician peers
Across the 2,521 endocrinology, diabetes & metabolism physician providers who report both Medicare Part D prescribing and a MIPS quality score, Nagashree Gundu Rao, MD writes more Part D claims than 18% of them and scores higher on MIPS quality than 38% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one endocrinology, diabetes & metabolism physician peer from a representative sample of 60; the gold marker is Nagashree Gundu Rao, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Nagashree Gundu Rao, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Nagashree Gundu Rao, MD?
Near national averagePrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
637 76% vs specialty avg
MIPS final score
81.3/100 1.8 pts vs avg
Specialty distribution in Virginia
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Virginia providers
Medicare quality performance, MIPS
Nagashree Gundu Rao, MD's 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average
- MIPS Final Score
- 81.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) - 81.3/100 vs national avg 83.1
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).
Nagashree Gundu Rao, MD appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 21785 FILIGREE CT STE 100, Ashburn, VA, 20147, with a listed phone of (703) 554-1122. NPI 1649484783 was issued on 05/09/2007.
Medicare Part D records for calendar year 2023 show 637 prescription claims written by this provider, covering 121 Medicare beneficiaries and totaling roughly $383K in drug spend, split 50% brand-name and 44% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.3/100 for the 2023 performance year (Quality 70.8, Cost 66.8), compared with the national average of 83.1.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 enrolled providers across 54 states and an average of 2,639 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 | 1649484783 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/09/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
81.283
Final Score
Avg: 83.1
70.77
Quality
66.84
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Nagashree Gundu Rao, 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.
Inova Health Care Services
Woodbridge, VA
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 · Brand-heavy
Nagashree Gundu Rao, MD - brand share 50.0%
Endocrinology, Diabetes & Metabolism Physician average
50% brand-name claims vs 44% generic, on 637 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.
637
Total Claims
$383K
Total Drug Cost
121
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,768
- Total Day Supply
- 52,964
- Brand vs Generic
- 50% brand / 44% generic
- Brand Drug Cost
- $368K
- Generic Drug Cost
- $6K
Patient Demographics
- Average Patient Age
- 71.8 years
- Avg HCC Risk Score
- 1.40
- Gender Split
- 73% female / 27% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Nagashree Gundu Rao, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
60 claims
- Jardiance
Jardiance
45 claims
- Metformin Hcl
Metformin Hcl
45 claims
- Synthroid
Synthroid
40 claims
- Alendronate Sodium
Alendronate Sodium
32 claims
- Ozempic
Ozempic
31 claims
- Atorvastatin Calcium
Atorvastatin Calcium
26 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
24 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 60 |
| Jardiance Empagliflozin | 45 |
| Metformin Hcl | 45 |
| Synthroid Levothyroxine Sodium | 40 |
| Alendronate Sodium | 32 |
| Ozempic Semaglutide | 31 |
| Atorvastatin Calcium | 26 |
| Rosuvastatin Calcium | 24 |
| Trulicity Dulaglutide | 24 |
| Glipizide Er Glipizide | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in VA →
All providers in Virginia →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Nagashree Gundu Rao, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Nagashree Gundu Rao, MD's 637 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Gundu Rao.
Dr. Mustapha Abdul-Rahman
MD
Winchester, VA
Dr. Robert Adler
M.D.
Richmond, VA
Dr. Samina Afreen
MD
Charlottesville, VA
Dr. Miriam Ahmad
M.D.
Falls Church, VA
Dr. Ahmed Al Dabbagh
MBCHB
Suffolk, VA
Compare Endocrinology, Diabetes & Metabolism 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 Endocrinology, Diabetes & Metabolism 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 Nagashree Gundu Rao, MD's specialty? ▼
Nagashree Gundu Rao, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Ashburn, Virginia. Credentials: MD.
How much does Nagashree Gundu Rao, MD prescribe under Medicare Part D? ▼
In 2023, Nagashree Gundu Rao, MD wrote 637 Medicare Part D claims totaling $383K in drug costs for 121 beneficiaries.
What is Nagashree Gundu Rao, MD's Medicare quality score? ▼
Nagashree Gundu Rao, MD has a CMS MIPS Final Score of 81.3/100 (Quality: 70.8, Cost: 66.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Nagashree Gundu Rao, MD located? ▼
Nagashree Gundu Rao, MD is located at 21785 FILIGREE CT STE 100, Ashburn, VA, 20147. Phone: (703) 554-1122.
What is Nagashree Gundu Rao, MD's NPI number? ▼
Nagashree Gundu Rao, MD's National Provider Identifier (NPI) is 1649484783, issued on 05/09/2007.
Does Nagashree Gundu Rao, MD prescribe more brand-name or generic drugs? ▼
Nagashree Gundu Rao, MD's prescribing is 50% brand-name and 44% generic drugs by claim count, with $368K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Nagashree Gundu Rao, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Nagashree Gundu Rao, MD's most frequently prescribed drugs include Levothyroxine Sodium, Jardiance, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nagashree Gundu Rao, MD accept Medicare? ▼
Nagashree Gundu Rao, MD appears in CMS Medicare data with 637 Part D claims and 121 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nagashree Gundu Rao, MD's credentials? ▼
Nagashree Gundu Rao, MD's NPI is 1649484783 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.
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.