NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1821739228 MD, PHD
Verify on CMS → Zhimin Xu, MD, PHD
Neurology Physician in New Haven, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 20,467 in Neurology 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
56
Medicare Part D claims · 22 beneficiaries · Neurology Physician avg: 1K
What the federal data shows
Zhimin Xu, MD, PHD filed 56 Medicare Part D claims in 2024 as a Neurology Physician in New Haven, Connecticut.
- 56
- Part D claims, 2024
- ≥0th
- 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 Zhimin Xu, MD, PHD
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 1821739228), first enumerated 04/07/2022.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 56 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- 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 1821739228 · Neurology Physician
NPI-10 · ENUM-RECENT · TAX-MID · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1821739228
- ENUM-RECENT 2022
- TAX-MID 20K Neurology Physician
- RX-TRACE 56
- BOOK-THIN 322 in Connecticut
- PHOTO-ENUM Antikkumar Patel · 2022
Zhimin Xu, MD, PHD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
56 ≥ 0th percentile 0% of 1,416,883 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 · 2024
◑
Board-eligible specialty (heuristic, not verified)
Zhimin Xu, MD, PHD 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 Zhimin Xu, MD, PHD?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
56 96% vs specialty avg
Specialty distribution in Connecticut
How Neurology Physician compares to other specialties among Connecticut 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 Neurology 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 | 1821739228 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | MD, PHD |
| Gender | Female |
| NPI Issued | 04/07/2022 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
56
Total Claims
$4K
Total Drug Cost
22
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 77.467
- Total Day Supply
- 2,185
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 74.9 years
- Avg HCC Risk Score
- 2.16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Zhimin Xu, MD, PHD fits within the Neurology Physician landscape nationally.
20,467
Neurology Physician Providers in US
54
States with Neurology Physician
1,356
Avg Claims per Provider
Zhimin Xu, MD, PHD's 56 claims are below the specialty average of 1,356.
Nationwide Neurology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Xu, both outside Connecticut so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2022)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neurology Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Xu.
One of 322 Neurology Physician providers enrolled in Connecticut, 5 are shown here.
Dr. Wasan Abd Wahab
M.D.
New Haven, CT
Dr. Swetha Ade
M.D.
Hartford, CT
Dr. Ashish Adlakha
MD
Farmington, CT
Dr. Idaira Aguilar Tejedor
M.D.
Stratford, CT
Dr. Anees Ahmed
MD
Manchester, CT
Compare Neurology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Zhimin Xu, MD, PHD's specialty? ▼
Zhimin Xu, MD, PHD specializes in Neurology Physician and practices in New Haven, Connecticut. Credentials: MD, PHD.
How much does Zhimin Xu, MD, PHD prescribe under Medicare Part D? ▼
In 2024, Zhimin Xu, MD, PHD wrote 56 Medicare Part D claims totaling $4K in drug costs for 22 beneficiaries.
Where is Zhimin Xu, MD, PHD located? ▼
Zhimin Xu, MD, PHD is located at 20 YORK ST, New Haven, CT, 06510. Phone: (203) 688-4242.
What is Zhimin Xu, MD, PHD's NPI number? ▼
Zhimin Xu, MD, PHD's National Provider Identifier (NPI) is 1821739228, issued on 04/07/2022.
How many Neurology Physician providers are there in the US? ▼
There are 20,467 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,356 Medicare Part D claims per year.
What drugs does Zhimin Xu, MD, PHD prescribe most often? ▼
Based on 2024 Medicare Part D data, Zhimin Xu, MD, PHD's most frequently prescribed drugs include Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Zhimin Xu, MD, PHD accept Medicare? ▼
Zhimin Xu, MD, PHD appears in CMS Medicare data with 56 Part D claims and 22 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Zhimin Xu, MD, PHD's credentials? ▼
Zhimin Xu, MD, PHD's NPI is 1821739228 with credentials MD, PHD. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.