NPI registry status
Active
2026 NPPES data Hematology (Internal Medicine) Physician NPI 1972878122 MD, PHD
Verify on CMS → Michael Chiorazzi, MD, PHD
Hematology (Internal Medicine) 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 1,483 in Hematology (Internal 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
69
Medicare Part D claims · 20 beneficiaries · Hematology (Internal Medicine) Physician avg: 684
MIPS score
73.6/100
▼ 10 pts below national avg 83.5 · Mid-tier
What the federal data shows
Michael Chiorazzi, MD, PHD reported a CMS MIPS final score of 73.6/100 - below the 83.5 national average - and filed 69 Medicare Part D claims in 2024.
- 73.6/100
- MIPS score · -10 vs avg
- 69
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥11th
- pct among measured MIPS (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 Michael Chiorazzi, MD, PHD
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 1972878122), first enumerated 03/20/2012.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 69 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 73.6/100 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
- 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 1972878122 · Hematology (Internal Medicine) Physician
NPI-10 · ENUM-MID · TAX-NARROW · MIPS-BELOW · RX-TRACE · BOOK-THIN · PHOTO-FINISH
- NPI-10 1972878122
- ENUM-MID 2012
- TAX-NARROW 1,483
- MIPS-BELOW 73.6/100
- RX-TRACE 69
- BOOK-THIN 36 in Connecticut
- PHOTO-FINISH Ann Jakubowski, MD · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Chiorazzi · this…
Chiorazzi · this provider
73.6 MIPS pts
- Esperanza Papado…
Esperanza Papadopoulos, MD
73.6 MIPS pts
- Layla Van Doren,…
Layla Van Doren, MD
73.6 MIPS pts
- Michael Messino,…
Michael Messino, M.D.
73.6 MIPS pts
- Ann Jakubowski, …
Ann Jakubowski, MD
73.6 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Michael Chiorazzi, MD, PHD'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.
74 ≥ 11th percentile 11% 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 Michael Chiorazzi, MD, PHD sits
This provider among hematology (internal medicine) physician peers
Across the 446 hematology (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Michael Chiorazzi, MD, PHD writes more Part D claims than 12% of them and scores higher on MIPS quality than 4% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one hematology (internal medicine) physician peer from a representative sample of 60; the gold marker is Michael Chiorazzi, MD, PHD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Michael Chiorazzi, MD, PHD 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 Michael Chiorazzi, MD, PHD?
Below national averagePrimary specialty
Hematology (Internal Medicine) Physician
Medicare Part D claims
69 90% vs specialty avg
MIPS final score
73.6/100 9.9 pts vs avg
Specialty distribution in Connecticut
How Hematology (Internal Medicine) Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Michael Chiorazzi, MD, PHD's 2023 MIPS final score plotted against the Hematology (Internal Medicine) Physician national average
- MIPS Final Score
- 73.6/100
- 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 | 1972878122 |
|---|---|
| Specialty | Hematology (Internal Medicine) Physician |
| Credentials | MD, PHD |
| Gender | Male |
| NPI Issued | 03/20/2012 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.5637
Final Score
Measured-score avg: 83.5
75.8435
Quality
51.4318
Cost
74
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Michael Chiorazzi, MD, PHD 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.
Yale University
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).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
69
Total Claims
$27K
Total Drug Cost
20
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 88
- Total Day Supply
- 1,846
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 71.2 years
- Avg HCC Risk Score
- 2.60
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Gabapentin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Hematology (Internal Medicine) Physician in CT →
All providers in Connecticut →
Compare specialties →
Hematology (Internal Medicine) Physician Overview
How Michael Chiorazzi, MD, PHD fits within the Hematology (Internal Medicine) Physician landscape nationally.
1,483
Hematology (Internal Medicine) Physician Providers in US
50
States with Hematology (Internal Medicine) Physician
684
Avg Claims per Provider
Michael Chiorazzi, MD, PHD's 69 claims are below the specialty average of 684.
Nationwide Hematology (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Chiorazzi, both outside Connecticut so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (73.6 here).
Same NPPES enumeration year (2012)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Hematology (Internal Medicine) Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Chiorazzi.
One of 36 Hematology (Internal Medicine) Physician providers enrolled in Connecticut, 5 are shown here.
Dr. Erkut Bahceci
MD
New Haven, CT
Dr. Michael Bar
MD
Stamford, CT
Aarti Bhatia
M.B.B.S.
New Haven, CT
Dr. Michael Burke
MD
Hartford, CT
Dr. Michael Cecchini
MD
New Haven, CT
Compare Hematology (Internal Medicine) Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Michael Chiorazzi, MD, PHD's specialty? ▼
Michael Chiorazzi, MD, PHD specializes in Hematology (Internal Medicine) Physician and practices in New Haven, Connecticut. Credentials: MD, PHD.
How much does Michael Chiorazzi, MD, PHD prescribe under Medicare Part D? ▼
In 2024, Michael Chiorazzi, MD, PHD wrote 69 Medicare Part D claims totaling $27K in drug costs for 20 beneficiaries.
What is Michael Chiorazzi, MD, PHD's Medicare quality score? ▼
Michael Chiorazzi, MD, PHD has a CMS MIPS Final Score of 73.6/100 (Quality: 75.8, Cost: 51.4). 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 Michael Chiorazzi, MD, PHD located? ▼
Michael Chiorazzi, MD, PHD is located at 20 YORK ST, New Haven, CT, 06510. Phone: (203) 361-4534.
What is Michael Chiorazzi, MD, PHD's NPI number? ▼
Michael Chiorazzi, MD, PHD's National Provider Identifier (NPI) is 1972878122, issued on 03/20/2012.
How many Hematology (Internal Medicine) Physician providers are there in the US? ▼
There are 1,483 Hematology (Internal Medicine) Physician providers across 50 states in the US. The average Hematology (Internal Medicine) Physician provider writes 684 Medicare Part D claims per year.
What drugs does Michael Chiorazzi, MD, PHD prescribe most often? ▼
Based on 2024 Medicare Part D data, Michael Chiorazzi, MD, PHD's most frequently prescribed drugs include Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Chiorazzi, MD, PHD accept Medicare? ▼
Michael Chiorazzi, MD, PHD appears in CMS Medicare data with 69 Part D claims and 20 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Chiorazzi, MD, PHD's credentials? ▼
Michael Chiorazzi, MD, PHD's NPI is 1972878122 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.
- 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.