NPI registry status
Active
2026 NPPES data Research Study Specialist NPI 1245406677 M.D.
Verify on CMS → Tong Li, M.D.
Research Study Specialist in Hamilton, New Jersey.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 485 in Research Study Specialist, 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
54
Medicare Part D claims · Research Study Specialist avg: 601
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Tong Li, M.D. filed 54 Medicare Part D claims in 2023 as a Research Study Specialist in Hamilton, New Jersey.
- 54
- Part D claims, 2023
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.
Tong Li, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
54 0th percentile higher than 0% 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
What does the federal data show about Tong Li, M.D.?
Quality data not reportedPrimary specialty
Research Study Specialist
Medicare Part D claims
54 91% vs specialty avg
Specialty distribution in New Jersey
How Research Study Specialist compares to other specialties among New Jersey 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 Research Study Specialist. 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).
Tong Li, M.D. appears in the CMS NPPES registry as a Research Study Specialist provider holding M.D. credentials at 2065 KLOCKNER RD, Hamilton, NJ, 08690, with a listed phone of (609) 586-1001. NPI 1245406677 was issued on 05/06/2008.
Medicare Part D records for calendar year 2023 show 54 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $3K in drug spend.
Research Study Specialist is a narrow specialty nationwide, with 485 enrolled providers across 42 states and an average of 601 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 | 1245406677 |
|---|---|
| Specialty | Research Study Specialist |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/06/2008 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
54
Total Claims
$3K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 80
- Total Day Supply
- 2,318
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 81.0 years
- Avg HCC Risk Score
- 3.56
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Tong Li, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Finasteride
Finasteride
13 claims
- Levothyroxine Sodium
Levothyroxine Sodium
13 claims
- Quetiapine Fumarate
Quetiapine Fumarate
12 claims
| Drug | Claims |
|---|---|
| Finasteride | 13 |
| Levothyroxine Sodium | 13 |
| Quetiapine Fumarate | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Research Study Specialist Overview
How Tong Li, M.D. fits within the Research Study Specialist landscape nationally.
485
Research Study Specialist Providers in US
42
States with Research Study Specialist
601
Avg Claims per Provider
Tong Li, M.D.'s 54 claims are below the specialty average of 601.
Nearby Research Study Specialist Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Li.
Dr. Corrado Altomare
MD
Flemington, NJ
Dr. David Berman
MD, PHD
Princeton, NJ
Dr. Anthony De Padova
M.D.
Basking Ridge, NJ
Dr. Femi Giwa
MBBS; MPH
Scotch Plains, NJ
Dr. Stuart Green
MD
Kenilworth, NJ
Compare Research Study Specialist 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 New Jersey medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Research Study Specialist 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.
Healthcare Guides
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How to Find a Doctor
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore New Jersey
Frequently Asked Questions
What is Tong Li, M.D.'s specialty? ▼
Tong Li, M.D. specializes in Research Study Specialist and practices in Hamilton, New Jersey. Credentials: M.D..
How much does Tong Li, M.D. prescribe under Medicare Part D? ▼
In 2023, Tong Li, M.D. wrote 54 Medicare Part D claims totaling $3K in drug costs for N/A beneficiaries.
Where is Tong Li, M.D. located? ▼
Tong Li, M.D. is located at 2065 KLOCKNER RD, Hamilton, NJ, 08690. Phone: (609) 586-1001.
What is Tong Li, M.D.'s NPI number? ▼
Tong Li, M.D.'s National Provider Identifier (NPI) is 1245406677, issued on 05/06/2008.
How many Research Study Specialist providers are there in the US? ▼
There are 485 Research Study Specialist providers across 42 states in the US. The average Research Study Specialist provider writes 601 Medicare Part D claims per year.
What drugs does Tong Li, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Tong Li, M.D.'s most frequently prescribed drugs include Finasteride, Levothyroxine Sodium, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tong Li, M.D. accept Medicare? ▼
Tong Li, M.D. appears in CMS Medicare data with 54 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tong Li, M.D.'s credentials? ▼
Tong Li, M.D.'s NPI is 1245406677 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.
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.