NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1457613879 M.D.
Verify on CMS → Timothy Yu, M.D.
Family Medicine Physician in Fairfax, 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 147,760 in Family Medicine 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
266
Medicare Part D claims · 89 beneficiaries · Family Medicine Physician avg: 3K
What the federal data shows
Timothy Yu, M.D. filed 266 Medicare Part D claims in 2023 as a Family Medicine Physician in Fairfax, Virginia.
- 266
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥49th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Timothy Yu, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1457613879), first enumerated 06/12/2012.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 266 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1457613879 · Family Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1457613879
- ENUM-MID 2012
- TAX-MEGA 148K Family Medicine
- RX-LIGHT 266
- BOOK-LIGHT 3,957 in Virginia
- PHOTO-ENUM Katrina Baumgartner · 2012
Timothy Yu, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
266 ≥ 49th percentile 49% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Timothy Yu, 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 Timothy Yu, M.D.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
266 92% vs specialty avg
Specialty distribution in Virginia
How Family Medicine 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 Family Medicine 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).
Practice Address
Provider Details
| NPI | 1457613879 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/12/2012 |
Hospital and facility affiliations
Facilities where Timothy Yu, 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.
Inova Physician Partners LLC
Fairfax, 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).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
266
Total Claims
$48K
Total Drug Cost
89
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 544
- Total Day Supply
- 15,357
- Generic Drug Cost
- $3K
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 71.6 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 57% female / 43% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Timothy Yu, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
15 claims
- Fluticasone Propio…
Fluticasone Propionate
14 claims
- Metformin Hcl
Metformin Hcl
14 claims
- Levothyroxine Sodium
Levothyroxine Sodium
13 claims
- Amlodipine Besylate
Amlodipine Besylate
12 claims
- Losartan Potassium
Losartan Potassium
12 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 15 |
| Fluticasone Propionate | 14 |
| Metformin Hcl | 14 |
| Levothyroxine Sodium | 13 |
| Amlodipine Besylate | 12 |
| Losartan Potassium | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Timothy Yu, M.D. fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Timothy Yu, M.D.'s 266 claims are below the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Yu, both outside Virginia so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2012)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Yu.
One of 3,957 Family Medicine Physician providers enrolled in Virginia, 5 are shown here.
Dr. Maureen Aaron
M.D.
Martinsville, VA
Dr. Marianne Abadam
DO
Hampton, VA
Dr. Linda Abbey
M.D.
Richmond, VA
Dr. David Abbot
MD
Vienna, VA
Dr. James Abbott
M.D.
Richmond, VA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Timothy Yu, M.D.'s specialty? ▼
Timothy Yu, M.D. specializes in Family Medicine Physician and practices in Fairfax, Virginia. Credentials: M.D..
How much does Timothy Yu, M.D. prescribe under Medicare Part D? ▼
In 2023, Timothy Yu, M.D. wrote 266 Medicare Part D claims totaling $48K in drug costs for 89 beneficiaries.
Where is Timothy Yu, M.D. located? ▼
Timothy Yu, M.D. is located at 3650 JOSEPH SIEWICK DR STE 400, Fairfax, VA, 22033. Phone: (703) 391-2020.
What is Timothy Yu, M.D.'s NPI number? ▼
Timothy Yu, M.D.'s National Provider Identifier (NPI) is 1457613879, issued on 06/12/2012.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Timothy Yu, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Timothy Yu, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Fluticasone Propionate, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Timothy Yu, M.D. accept Medicare? ▼
Timothy Yu, M.D. appears in CMS Medicare data with 266 Part D claims and 89 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Timothy Yu, M.D.'s credentials? ▼
Timothy Yu, M.D.'s NPI is 1457613879 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
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.