NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1629278536 MD
Verify on CMS → Ansu Joy, MD
Endocrinology, Diabetes & Metabolism Physician in Princeton, 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 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
4K
Medicare Part D claims · 466 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
46%
generic claims · 47% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Industry payments
$191.13
5 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Ansu Joy, MD carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 3,778 Medicare Part D claims in 2023.
- 75/100
- CMS neutral score · not measured
- 4K
- Part D claims, 2023
- 46%
- 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.
Ansu Joy, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,778 ≥ 91st percentile 91% 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)
Ansu Joy, 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 Ansu Joy, MD?
CMS neutral score, not measuredPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
3,778 43% vs specialty avg
MIPS final score
75/100
Specialty distribution in New Jersey
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among New Jersey providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
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).
Ansu Joy, MD appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 601 EWING ST, Princeton, NJ, 08540, with a listed phone of (609) 924-4433. NPI 1629278536 was issued on 07/19/2007.
Medicare Part D records for calendar year 2023 show 3,778 prescription claims written by this provider, covering 466 Medicare beneficiaries and totaling roughly $2.1 million in drug spend, split 47% brand-name and 46% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider carries a Final Score of 75/100 for the 2023 performance year, but CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score: this is the neutral performance threshold CMS assigns where nothing was scored, so it is not comparable with clinicians whose score was measured.
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 | 1629278536 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 07/19/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
CMS neutral threshold · not measured
Reporting: Group practice
Hospital and facility affiliations
Facilities where Ansu Joy, 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.
Advocare, LLC
Haddonfield, NJ
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Ansu Joy, MD. Source: openpaymentsdata.cms.gov.
Total received
$191
Largest payer
Bayer Healthcare Pharmaceuticals Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Above average
Ansu Joy, MD - brand share 47.0%
Endocrinology, Diabetes & Metabolism Physician average
47% brand-name claims vs 46% generic, on 3,778 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.
3,778
Total Claims
$2.1M
Total Drug Cost
466
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,008
- Total Day Supply
- 298,880
- Brand vs Generic
- 47% brand / 46% generic
- Brand Drug Cost
- $1.9M
- Generic Drug Cost
- $54K
Patient Demographics
- Average Patient Age
- 74.0 years
- Avg HCC Risk Score
- 1.33
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 20, 65-74: 230, 75-84: 175, 85+: 41
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ansu Joy, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
539 claims
- Synthroid
Synthroid
269 claims
- Glimepiride
Glimepiride
266 claims
- Jardiance
Jardiance
232 claims
- Metformin Hcl
Metformin Hcl
219 claims
- Ozempic 156
Ozempic
156 claims
- Metformin Hcl Er 139
Metformin Hcl Er
139 claims
- Methimazole 99
Methimazole
99 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 539 |
| Synthroid Levothyroxine Sodium | 269 |
| Glimepiride | 266 |
| Jardiance Empagliflozin | 232 |
| Metformin Hcl | 219 |
| Ozempic Semaglutide | 156 |
| Metformin Hcl Er Metformin Hcl | 139 |
| Methimazole | 99 |
| Novolog Flexpen Insulin Aspart | 87 |
| Januvia Sitagliptin Phosphate | 84 |
* 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 NJ →
All providers in New Jersey →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Ansu Joy, 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
Ansu Joy, MD's 3,778 claims are above the specialty average of 2,639.
Nationwide Endocrinology, Diabetes & Metabolism Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Joy, both outside New Jersey so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Joy.
One of 324 Endocrinology, Diabetes & Metabolism Physician providers enrolled in New Jersey, 5 are shown here.
Dr. Alice Abraham
M.D.
Englewood, NJ
Dr. Sonoo Advani
M.D.
West Orange, NJ
Dr. Karen Agersborg
DO
Cape May Court House, NJ
Dr. Richard Agrin
MD
New Brunswick, NJ
Dr. Sana Ahsun
MD
Piscataway, NJ
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 New Jersey 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 Ansu Joy, MD's specialty? ▼
Ansu Joy, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Princeton, New Jersey. Credentials: MD.
How much does Ansu Joy, MD prescribe under Medicare Part D? ▼
In 2023, Ansu Joy, MD wrote 3,778 Medicare Part D claims totaling $2.1M in drug costs for 466 beneficiaries.
What is Ansu Joy, MD's Medicare quality score? ▼
Ansu Joy, MD has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ansu Joy, MD located? ▼
Ansu Joy, MD is located at 601 EWING ST, Princeton, NJ, 08540. Phone: (609) 924-4433.
What is Ansu Joy, MD's NPI number? ▼
Ansu Joy, MD's National Provider Identifier (NPI) is 1629278536, issued on 07/19/2007.
Does Ansu Joy, MD prescribe more brand-name or generic drugs? ▼
Ansu Joy, MD's prescribing is 47% brand-name and 46% generic drugs by claim count, with $1.9M 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 Ansu Joy, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Ansu Joy, MD's most frequently prescribed drugs include Levothyroxine Sodium, Synthroid, Glimepiride. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ansu Joy, MD accept Medicare? ▼
Ansu Joy, MD appears in CMS Medicare data with 3,778 Part D claims and 466 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ansu Joy, MD's credentials? ▼
Ansu Joy, MD's NPI is 1629278536 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
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.