NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1427197086 MD
Verify on CMS → Howard Eison, MD
Internal Medicine Physician in Norwalk, 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 174,792 in 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
732
Medicare Part D claims · 41 beneficiaries · Internal Medicine Physician avg: 3K
What the federal data shows
Howard Eison, MD filed 732 Medicare Part D claims in 2024 as an Internal Medicine Physician in Norwalk, Connecticut.
- 732
- Part D claims, 2024
- ≥70th
- pct by Part D claim volume (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 Howard Eison, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1427197086), first enumerated 02/06/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 732 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- 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.
Compare Eison with other Internal Medicine Physician providers
Same primary specialty, same federal CMS NPPES roster.
All 76 Internal Medicine Physician providers in Norwalk, CT →
Also enrolled in Connecticut
- Christina Abavana Bridgeport, CT
- Dr. Hoda Abdel Salam, M.D. New Britain, CT
- Dr. Gada Abdelhafiz, MD New London, CT
- Dr. Mahmoud Abdelrahman, MD Bridgeport, CT
- Simon Abi-Saleh Bridgeport, CT
- Dr. Gerard Abidor, D.O. Bridgeport, CT
Other specialties in Norwalk: Clinical Social Worker (169) · Student in an Organized Health Care Education/Training Program (131) · Pharmacist (87) · Physical Therapist (86)
CMS NPPES provider registry desk
NPI 1427197086 · Internal Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1427197086
- ENUM-MID 2007
- TAX-MEGA 175K Internal Medicine
- RX-LIGHT 732
- BOOK-LIGHT 2,830 in Connecticut
- PHOTO-ENUM Louis Moses, M.D. · 2007
Howard Eison, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
732 ≥ 70th percentile 70% of 1,416,883 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 · 2024
◑
Board-eligible specialty (heuristic, not verified)
Howard Eison, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Howard Eison, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
732 74% vs specialty avg
Specialty distribution in Connecticut
How Internal Medicine Physician compares to other specialties among Connecticut 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 Internal Medicine Physician. 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).
Practice Address
Provider Details
| NPI | 1427197086 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 02/06/2007 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
732
Total Claims
$71K
Total Drug Cost
41
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,697.5
- Total Day Supply
- 47,876
- Generic Drug Cost
- $15K
- Opioid Claims
- 68 (9.3% rate)
- Antibiotic Claims
- 28
Patient Demographics
- Average Patient Age
- 76.5 years
- Avg HCC Risk Score
- 0.71
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Howard Eison, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
75 claims
- Oxycodone Hcl
Oxycodone Hcl
66 claims
- Levothyroxine Sodium 28
Levothyroxine Sodium
28 claims
- Rosuvastatin Calcium 28
Rosuvastatin Calcium
28 claims
- Lisinopril 27
Lisinopril
27 claims
- Amlodipine Besylate 23
Amlodipine Besylate
23 claims
- Eliquis 17
Eliquis
17 claims
- Zolpidem Tartrate 16
Zolpidem Tartrate
16 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 75 |
| Oxycodone Hcl | 66 |
| Levothyroxine Sodium | 28 |
| Rosuvastatin Calcium | 28 |
| Lisinopril | 27 |
| Amlodipine Besylate | 23 |
| Eliquis Apixaban | 17 |
| Zolpidem Tartrate | 16 |
| Metformin Hcl | 14 |
| Quetiapine Fumarate | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Howard Eison, MD fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Howard Eison, MD's 732 claims are below the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Eison, both outside Connecticut so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Eison.
One of 2,830 Internal Medicine Physician providers enrolled in Connecticut, 11 are shown on this page.
Dr. Richard Abraham
M.D.
Canton, CT
Dr. Odaliz Abreu-Lanfranco
MD
New Haven, CT
Dr. Nila Aburto
MD
Stamford, CT
Dr. Angelo Accomando
M.D.
East Haven, CT
Dr. Kalvin Adala
MD
Danbury, CT
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Howard Eison, MD's specialty? ▼
Howard Eison, MD specializes in Internal Medicine Physician and practices in Norwalk, Connecticut. Credentials: MD.
How much does Howard Eison, MD prescribe under Medicare Part D? ▼
In 2024, Howard Eison, MD wrote 732 Medicare Part D claims totaling $71K in drug costs for 41 beneficiaries.
Where is Howard Eison, MD located? ▼
Howard Eison, MD is located at 128 EAST AVE, Norwalk, CT, 06851. Phone: (203) 838-7400.
What is Howard Eison, MD's NPI number? ▼
Howard Eison, MD's National Provider Identifier (NPI) is 1427197086, issued on 02/06/2007.
Does Howard Eison, MD prescribe opioids? ▼
Yes, Howard Eison, MD had 68 opioid claims in 2024 with an opioid prescribing rate of 9.3%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Howard Eison, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Howard Eison, MD's most frequently prescribed drugs include Atorvastatin Calcium, Oxycodone Hcl, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Howard Eison, MD accept Medicare? ▼
Howard Eison, MD appears in CMS Medicare data with 732 Part D claims and 41 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Howard Eison, MD's credentials? ▼
Howard Eison, MD's NPI is 1427197086 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 (2024). 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 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.