2026 NPPES data Vascular Neurology Physician NPI 1629174453 M.D.
Verify on CMS →

CATHERINE HOSLEY, M.D.

Vascular Neurology Physician in HARTFORD, Connecticut. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
MIPS score
86.4127/100
▲ 3 pts above national avg 83.1 · [object Object]
What the federal data reveals: CATHERINE HOSLEY, M.D. is a Vascular Neurology Physician ([object Object]) practicing in HARTFORD, Connecticut . Their CMS MIPS Final Score of 86.4127/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: CATHERINE HOSLEY, M.D. reported a CMS MIPS final score of 86.4127 out of 100, above the 83.1 national average. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

CATHERINE HOSLEY, 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).

CATHERINE HOSLEY, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 09/16/2006

NPI 1629174453

Primary specialty

Vascular Neurology Physician

Niche

555 US NPIs in this specialty

MIPS final score

86.4127/100 3.3127000000000066% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Connecticut

How Vascular Neurology Physician compares to other specialties among Connecticut providers

Connecticut providers

Vascular Neurology Physician share within Connecticut

1. Vascular Neurology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Vascular Neurology Physician share within Connecticut

Medicare quality performance — MIPS

CATHERINE HOSLEY, M.D.'s 2023 MIPS final score plotted against the Vascular Neurology Physician national average

High performer (top quartile)
MIPS Final Score
86.4127/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Vascular Neurology Physician) — 86.4127/100 vs national avg 83.1

0%100%National avg83%86.4%
MIPS final score (Vascular Neurology Physician) — 86.4127/100 vs national avg 83.1

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).

CATHERINE HOSLEY, M.D. is a Vascular Neurology Physician provider practicing in HARTFORD, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1629174453. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CATHERINE HOSLEY, M.D. appears in the CMS NPPES registry as a Vascular Neurology Physician provider holding M.D. credentials at 80 SEYMOUR STREET, HARTFORD, CT, 06102, with a listed phone of (860) 545-3621. NPI 1629174453 was issued on 09/16/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HOSLEY most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Vascular Neurology Physician providers operate outside Part D entirely. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 86.4127/100 for the 2023 performance year (Quality 81.9936, Cost 43.0396), compared with the national average of 83.1.

Vascular Neurology Physician is a narrow specialty nationwide, with 555 enrolled providers across 47 states and an average of 378 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

80 SEYMOUR STREET
HARTFORD, CT 06102

Provider Details

NPI 1629174453
Specialty Vascular Neurology Physician
Credentials M.D.
Gender Female
NPI Issued 09/16/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

86.4127
Final Score
Avg: 83.1
81.9936
Quality
43.0396
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where CATHERINE HOSLEY, 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.

HARTFORD HOSPITAL
★★★★☆ 4/5
HARTFORD, CT
Acute Care Hospitals
CMS CCN: 070025

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Vascular Neurology Physician Overview

How CATHERINE HOSLEY, M.D. fits within the Vascular Neurology Physician landscape nationally.

555
Vascular Neurology Physician Providers in US
47
States with Vascular Neurology Physician
378
Avg Claims per Provider

Nearby Vascular Neurology Physician Providers in Connecticut

Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as HOSLEY.

Compare Vascular Neurology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CATHERINE HOSLEY, M.D.'s specialty?
CATHERINE HOSLEY, M.D. specializes in Vascular Neurology Physician and practices in HARTFORD, Connecticut. Credentials: M.D..
What is CATHERINE HOSLEY, M.D.'s Medicare quality score?
CATHERINE HOSLEY, M.D. has a CMS MIPS Final Score of 86.4127/100 (Quality: 81.9936, Cost: 43.0396). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CATHERINE HOSLEY, M.D. located?
CATHERINE HOSLEY, M.D. is located at 80 SEYMOUR STREET, HARTFORD, CT, 06102. Phone: (860) 545-3621.
What is CATHERINE HOSLEY, M.D.'s NPI number?
CATHERINE HOSLEY, M.D.'s National Provider Identifier (NPI) is 1629174453, issued on 09/16/2006.
How many Vascular Neurology Physician providers are there in the US?
There are 555 Vascular Neurology Physician providers across 47 states in the US. The average Vascular Neurology Physician provider writes 378 Medicare Part D claims per year.
Does CATHERINE HOSLEY, M.D. accept Medicare?
CATHERINE HOSLEY, M.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CATHERINE HOSLEY, M.D.'s credentials?
CATHERINE HOSLEY, M.D.'s NPI is 1629174453 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

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.
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