NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1437654662 M.D.
Verify on CMS → Eric Chacko, M.D.
Nephrology 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 10,806 in Nephrology 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
508
Medicare Part D claims · 121 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
71%
generic claims · 29% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.5/100
▲ 8 pts above national avg 83.5 · Exceptional
Industry payments
$514.81
24 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Eric Chacko, M.D. reported a CMS MIPS final score of 91.5/100 - above the 83.5 national average - and filed 508 Medicare Part D claims in 2024.
- 91.5/100
- MIPS score · +8 vs avg
- 508
- Part D claims, 2024
- 71%
- 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.
Federal trust snapshot
What official records show about Eric Chacko, M.D.
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1437654662), first enumerated 03/28/2018.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 508 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 91.5/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- 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
- Reported
Industry payment transparency
$514.81 in reported industry payments (24 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1437654662 · Nephrology Physician
NPI-10 · ENUM-RECENT · TAX-MID · MIPS-ABOVE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1437654662
- ENUM-RECENT 2018
- TAX-MID 11K Nephrology Physician
- MIPS-ABOVE 91.5/100
- RX-LIGHT 508
- BOOK-THIN 142 in Connecticut
- PHOTO-FINISH Suzanne El-Sayegh, M… · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Andrea Nelson, M…
Andrea Nelson, MD
91.4 MIPS pts
- Chacko · this pr…
Chacko · this provider
91.5 MIPS pts
- Tudor Ocneanu, M…
Tudor Ocneanu, MD
91.5 MIPS pts
- Pawan Gupta, MD …
Pawan Gupta, MD
91.5 MIPS pts
- Suzanne El-Sayeg…
Suzanne El-Sayegh, M.D.
91.5 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Eric Chacko, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
92 ≥ 61st percentile 61% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Eric Chacko, M.D. sits
This provider among nephrology physician peers
Across the 2,230 nephrology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Eric Chacko, M.D. writes more Part D claims than 27% of them and scores higher on MIPS quality than 67% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one nephrology physician peer from a representative sample of 60; the gold marker is Eric Chacko, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Eric Chacko, M.D. 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 Eric Chacko, M.D.?
High performer (top quartile)Primary specialty
Nephrology Physician
Medicare Part D claims
508 66% vs specialty avg
MIPS final score
91.5/100 8 pts vs avg
Specialty distribution in Connecticut
How Nephrology Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Eric Chacko, M.D.'s 2023 MIPS final score plotted against the Nephrology Physician national average
- MIPS Final Score
- 91.5/100
- vs 83.5 national avg · 2023 performance year
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 | 1437654662 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/28/2018 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.4772
Final Score
Measured-score avg: 83.5
100
Quality
51.9951
Cost
87
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Eric Chacko, 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.
Metabolism Associates PC
New Haven, CT
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 Eric Chacko, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$515
Largest payer
Amgen 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
Eric Chacko, M.D. - brand share 29.0%
Nephrology Physician average
29% brand-name claims vs 71% generic, on 508 2024 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 2024.
508
Total Claims
$192K
Total Drug Cost
121
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,063.867
- Total Day Supply
- 31,045
- Brand vs Generic
- 29% brand / 71% generic
- Brand Drug Cost
- $170K
- Generic Drug Cost
- $22K
Patient Demographics
- Average Patient Age
- 73.8 years
- Avg HCC Risk Score
- 4.09
- Gender Split
- 40% female / 60% male
- Age Distribution
- <65: 14, 65-74: 47, 75-84: 45, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Eric Chacko, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Farxiga
Farxiga
83 claims
- Sevelamer Carbonate
Sevelamer Carbonate
39 claims
- Losartan Potassium
Losartan Potassium
34 claims
- Amlodipine Besylate 30
Amlodipine Besylate
30 claims
- Allopurinol 23
Allopurinol
23 claims
- Tamsulosin Hcl 23
Tamsulosin Hcl
23 claims
- Bumetanide 14
Bumetanide
14 claims
- Furosemide 11
Furosemide
11 claims
| Drug | Claims |
|---|---|
| Farxiga Dapagliflozin Propanediol | 83 |
| Sevelamer Carbonate | 39 |
| Losartan Potassium | 34 |
| Amlodipine Besylate | 30 |
| Allopurinol | 23 |
| Tamsulosin Hcl | 23 |
| Bumetanide | 14 |
| Furosemide | 11 |
| Jardiance Empagliflozin | 11 |
| Trazodone Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Eric Chacko, M.D. fits within the Nephrology Physician landscape nationally.
10,806
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,511
Avg Claims per Provider
Eric Chacko, M.D.'s 508 claims are below the specialty average of 1,511.
Nationwide Nephrology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Chacko, both outside Connecticut so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (91.5 here).
Same NPPES enumeration year (2018)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nephrology Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Chacko.
One of 142 Nephrology Physician providers enrolled in Connecticut, 5 are shown here.
Dr. Mervet Abouelkair
M.D.
New Britain, CT
Dr. Ali Abu-Alfa
MD
New Haven, CT
Dr. Nancy Adams
M.D.
Farmington, CT
Dr. Bayode Afolalu
M.D.
Orange, CT
Dr. Feras Al Shami
M.D.
New Britain, CT
Compare Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Eric Chacko, M.D.'s specialty? ▼
Eric Chacko, M.D. specializes in Nephrology Physician and practices in New Haven, Connecticut. Credentials: M.D..
How much does Eric Chacko, M.D. prescribe under Medicare Part D? ▼
In 2024, Eric Chacko, M.D. wrote 508 Medicare Part D claims totaling $192K in drug costs for 121 beneficiaries.
What is Eric Chacko, M.D.'s Medicare quality score? ▼
Eric Chacko, M.D. has a CMS MIPS Final Score of 91.5/100 (Quality: 100, Cost: 52). 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 Eric Chacko, M.D. located? ▼
Eric Chacko, M.D. is located at 136 SHERMAN AVE STE 405, New Haven, CT, 06511. Phone: (203) 787-0117.
What is Eric Chacko, M.D.'s NPI number? ▼
Eric Chacko, M.D.'s National Provider Identifier (NPI) is 1437654662, issued on 03/28/2018.
Does Eric Chacko, M.D. prescribe more brand-name or generic drugs? ▼
Eric Chacko, M.D.'s prescribing is 29% brand-name and 71% generic drugs by claim count, with $170K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,806 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,511 Medicare Part D claims per year.
What drugs does Eric Chacko, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Eric Chacko, M.D.'s most frequently prescribed drugs include Farxiga, Sevelamer Carbonate, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Eric Chacko, M.D. accept Medicare? ▼
Eric Chacko, M.D. appears in CMS Medicare data with 508 Part D claims and 121 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eric Chacko, M.D.'s credentials? ▼
Eric Chacko, M.D.'s NPI is 1437654662 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 (2024). 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 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.