NPI registry status
Active
2026 NPPES data Hematology (Internal Medicine) Physician NPI 1093800369 MD
Verify on CMS → Michael Bar, MD
Hematology (Internal Medicine) Physician in Stamford, 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 1,436 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
277
Medicare Part D claims · 58 beneficiaries · Hematology (Internal Medicine) Physician avg: 693
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
80.4/100
▼ 3 pts below national avg 83.1 · Above neutral
Industry payments
$2.3K
3 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Michael Bar, MD reported a CMS MIPS final score of 80.4/100 - below the 83.1 national average - and filed 277 Medicare Part D claims in 2023.
- 80.4/100
- MIPS score · -3 vs avg
- 277
- Part D claims, 2023
- 47%
- 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.
Michael Bar, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
80 33rd percentile higher than 33% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Michael Bar, MD sits
This provider among hematology (internal medicine) physician peers
Across the 570 hematology (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Michael Bar, MD writes more Part D claims than 32% of them and scores higher on MIPS quality than 42% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one hematology (internal medicine) physician peer from a representative sample of 60; the gold marker is Michael Bar, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Michael Bar, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Bar, MD?
Near national averagePrimary specialty
Hematology (Internal Medicine) Physician
Medicare Part D claims
277 60% vs specialty avg
MIPS final score
80.4/100 2.7 pts vs avg
Specialty distribution in Connecticut
How Hematology (Internal Medicine) Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Michael Bar, MD's 2023 MIPS final score plotted against the Hematology (Internal Medicine) Physician national average
- MIPS Final Score
- 80.4/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hematology (Internal Medicine) Physician) - 80.4/100 vs national avg 83.1
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).
Michael Bar, MD appears in the CMS NPPES registry as a Hematology (Internal Medicine) Physician provider holding MD credentials at 34 SHELBURNE ROAD, Stamford, CT, 06902, with a listed phone of (203) 325-2695. NPI 1093800369 was issued on 10/04/2006.
Medicare Part D records for calendar year 2023 show 277 prescription claims written by this provider, covering 58 Medicare beneficiaries and totaling roughly $1.8 million in drug spend, split 53% brand-name and 47% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 80.4/100 for the 2023 performance year (Quality 90.5, Cost 42.6), compared with the national average of 83.1.
Hematology (Internal Medicine) Physician is a narrow specialty nationwide, with 1,436 enrolled providers across 50 states and an average of 693 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 | 1093800369 |
|---|---|
| Specialty | Hematology (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/04/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
80.4134
Final Score
Avg: 83.1
90.5018
Quality
42.5995
Cost
Reporting: Group practice
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 Michael Bar, MD. Source: openpaymentsdata.cms.gov.
Total received
$2.3K
Largest payer
BeiGene, Ltd.
Most common payment type
Consulting Fee
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 · Brand-heavy
Michael Bar, MD - brand share 53.0%
Hematology (Internal Medicine) Physician average
53% brand-name claims vs 47% generic, on 277 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.
277
Total Claims
$1.8M
Total Drug Cost
58
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 388
- Total Day Supply
- 11,133
- Brand vs Generic
- 53% brand / 47% generic
- Brand Drug Cost
- $1.7M
- Generic Drug Cost
- $48K
Patient Demographics
- Average Patient Age
- 76.7 years
- Avg HCC Risk Score
- 2.33
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael Bar, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Imbruvica
Imbruvica
59 claims
- Venclexta
Venclexta
54 claims
- Hydroxyurea
Hydroxyurea
53 claims
- Acyclovir 16
Acyclovir
16 claims
- Dexamethasone 15
Dexamethasone
15 claims
- Anagrelide Hcl 11
Anagrelide Hcl
11 claims
| Drug | Claims |
|---|---|
| Imbruvica Ibrutinib | 59 |
| Venclexta Venetoclax | 54 |
| Hydroxyurea | 53 |
| Acyclovir | 16 |
| Dexamethasone | 15 |
| Anagrelide Hcl | 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 Bar, MD fits within the Hematology (Internal Medicine) Physician landscape nationally.
1,436
Hematology (Internal Medicine) Physician Providers in US
50
States with Hematology (Internal Medicine) Physician
693
Avg Claims per Provider
Michael Bar, MD's 277 claims are below the specialty average of 693.
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 Bar.
Dr. Erkut Bahceci
MD
New Haven, CT
Dr. Aarti Bhatia
M.B.B.S.
New Haven, CT
Dr. Syed Bilgrami
MD
Hartford, 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 →
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 Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hematology (Internal Medicine) 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 Michael Bar, MD's specialty? ▼
Michael Bar, MD specializes in Hematology (Internal Medicine) Physician and practices in Stamford, Connecticut. Credentials: MD.
How much does Michael Bar, MD prescribe under Medicare Part D? ▼
In 2023, Michael Bar, MD wrote 277 Medicare Part D claims totaling $1.8M in drug costs for 58 beneficiaries.
What is Michael Bar, MD's Medicare quality score? ▼
Michael Bar, MD has a CMS MIPS Final Score of 80.4/100 (Quality: 90.5, Cost: 42.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Michael Bar, MD located? ▼
Michael Bar, MD is located at 34 SHELBURNE ROAD, Stamford, CT, 06902. Phone: (203) 325-2695.
What is Michael Bar, MD's NPI number? ▼
Michael Bar, MD's National Provider Identifier (NPI) is 1093800369, issued on 10/04/2006.
Does Michael Bar, MD prescribe more brand-name or generic drugs? ▼
Michael Bar, MD's prescribing is 53% brand-name and 47% generic drugs by claim count, with $1.7M in brand drug costs.
How many Hematology (Internal Medicine) Physician providers are there in the US? ▼
There are 1,436 Hematology (Internal Medicine) Physician providers across 50 states in the US. The average Hematology (Internal Medicine) Physician provider writes 693 Medicare Part D claims per year.
What drugs does Michael Bar, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Bar, MD's most frequently prescribed drugs include Imbruvica, Venclexta, Hydroxyurea. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Bar, MD accept Medicare? ▼
Michael Bar, MD appears in CMS Medicare data with 277 Part D claims and 58 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Bar, MD's credentials? ▼
Michael Bar, MD's NPI is 1093800369 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
Compiled from official public sources by the PlainDoctor editorial team.