2026 NPPES data Allergy & Immunology Physician NPI 1801819255 MD
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HARINI HOSAIN, MD

Allergy & Immunology Physician in BLOOMFIELD, 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.
Prescribing volume
731
Medicare Part D claims · 159 beneficiaries · Allergy & Immunology Physician avg: 764
Industry payments
$81.75
4 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: HARINI HOSAIN, MD is a Allergy & Immunology Physician ([object Object]) practicing in BLOOMFIELD, Connecticut with a Medicare Part D prescribing footprint of 731 claims across 159 beneficiaries . Industry payments of $81.75 across 4 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: HARINI HOSAIN, MD filed 731 Medicare Part D claims in 2023 across BLOOMFIELD, Connecticut. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

HARINI HOSAIN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

HARINI HOSAIN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 07/26/2006

NPI 1801819255

Primary specialty

Allergy & Immunology Physician

Niche

3,390 US NPIs in this specialty

Medicare Part D claims

731 4% vs specialty avg

2023 prescription claims

Specialty avg: 764

Specialty distribution in Connecticut

How Allergy & Immunology Physician compares to other specialties among Connecticut providers

Connecticut providers

Allergy & Immunology Physician share within Connecticut

1. Allergy & Immunology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Allergy & Immunology Physician share within Connecticut

Specialty board-certification context

Estimated specialty board-certified rate — Allergy & Immunology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Allergy & Immunology Physician ABMS/AOA estimate

Est. board-certified rate (Allergy & Immunology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Allergy & Immunology Physician) — ABMS / AOA estimate

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).

HARINI HOSAIN, MD is a Allergy & Immunology Physician provider practicing in BLOOMFIELD, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1801819255. 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.

HARINI HOSAIN, MD appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding MD credentials at 35 JOLLEY DR STE 103, BLOOMFIELD, CT, 06002, with a listed phone of (860) 286-0041. NPI 1801819255 was issued on 07/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HOSAIN 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 records for calendar year 2023 show 731 prescription claims written by this provider, covering 159 Medicare beneficiaries and totaling roughly $98K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Allergy & Immunology Physician is a narrow specialty nationwide, with 3,390 enrolled providers across 52 states and an average of 764 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

35 JOLLEY DR STE 103
BLOOMFIELD, CT 06002

Provider Details

NPI 1801819255
Specialty Allergy & Immunology Physician
Credentials MD
Gender Female
NPI Issued 07/26/2006

Hospital and facility affiliations

Facilities where HARINI HOSAIN, MD 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.

COLLINS MEDICAL ASSOCIATES 2 PC
BLOOMFIELD, 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 HARINI HOSAIN, MD. Source: openpaymentsdata.cms.gov.

Total received

$82

Largest payer

CSL Behring

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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

731
Total Claims
$98K
Total Drug Cost
159
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,432
Total Day Supply
41,444
Generic Drug Cost
$40K

Patient Demographics

Average Patient Age
73.1 years
Avg HCC Risk Score
1.08
Gender Split
75% female / 25% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Montelukast Sodium
161
Azelastine Hcl
99
Albuterol Sulfate Hfa
Albuterol Sulfate
62
Olopatadine Hcl
39
Epinephrine
32
Fluticasone Propionate
29
Hydroxyzine Hcl
25
Desloratadine
22
Levocetirizine Dihydrochloride
21
Famotidine
20

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Allergy & Immunology Physician Overview

How HARINI HOSAIN, MD fits within the Allergy & Immunology Physician landscape nationally.

3,390
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider

HARINI HOSAIN, MD's 731 claims are below the specialty average of 764.

Nearby Allergy & Immunology Physician Providers in Connecticut

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

Compare Allergy & Immunology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is HARINI HOSAIN, MD's specialty?
HARINI HOSAIN, MD specializes in Allergy & Immunology Physician and practices in BLOOMFIELD, Connecticut. Credentials: MD.
How much does HARINI HOSAIN, MD prescribe under Medicare Part D?
In 2023, HARINI HOSAIN, MD wrote 731 Medicare Part D claims totaling $98K in drug costs for 159 beneficiaries.
Where is HARINI HOSAIN, MD located?
HARINI HOSAIN, MD is located at 35 JOLLEY DR STE 103, BLOOMFIELD, CT, 06002. Phone: (860) 286-0041.
What is HARINI HOSAIN, MD's NPI number?
HARINI HOSAIN, MD's National Provider Identifier (NPI) is 1801819255, issued on 07/26/2006.
How many Allergy & Immunology Physician providers are there in the US?
There are 3,390 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does HARINI HOSAIN, MD prescribe most often?
Based on 2023 Medicare Part D data, HARINI HOSAIN, MD's most frequently prescribed drugs include Montelukast Sodium, Azelastine Hcl, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HARINI HOSAIN, MD accept Medicare?
HARINI HOSAIN, MD appears in CMS Medicare data with 731 Part D claims and 159 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HARINI HOSAIN, MD's credentials?
HARINI HOSAIN, MD's NPI is 1801819255 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

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.
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