2026 NPPES data Allergy & Immunology (Internal Medicine) Physician NPI 1902471352 MD
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RACHA ABI MELHEM, MD

Allergy & Immunology (Internal Medicine) Physician in DERBY, 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
39
Medicare Part D claims · 15 beneficiaries · Allergy & Immunology (Internal Medicine) Physician avg: 798
What the federal data reveals: RACHA ABI MELHEM, MD is a Allergy & Immunology (Internal Medicine) Physician ([object Object]) practicing in DERBY, Connecticut with a Medicare Part D prescribing footprint of 39 claims across 15 beneficiaries .

What stands out: RACHA ABI MELHEM, MD filed 39 Medicare Part D claims in 2023 across DERBY, Connecticut. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

RACHA ABI MELHEM, 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).

RACHA ABI MELHEM, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 05/26/2021

NPI 1902471352

Primary specialty

Allergy & Immunology (Internal Medicine) Physician

Niche

520 US NPIs in this specialty

Medicare Part D claims

39 95% vs specialty avg

2023 prescription claims

Specialty avg: 798

Specialty distribution in Connecticut

How Allergy & Immunology (Internal Medicine) Physician compares to other specialties among Connecticut providers

Connecticut providers

Allergy & Immunology (Internal Medicine) Physician share within Connecticut

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Allergy & Immunology (Internal Medicine) 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).

RACHA ABI MELHEM, MD is a Allergy & Immunology (Internal Medicine) Physician provider practicing in DERBY, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1902471352. 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.

RACHA ABI MELHEM, MD appears in the CMS NPPES registry as a Allergy & Immunology (Internal Medicine) Physician provider holding MD credentials at 300 SEYMOUR AVE STE 203B, DERBY, CT, 06418, with a listed phone of (203) 516-5303. NPI 1902471352 was issued on 05/26/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ABI MELHEM 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 39 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $6K 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 (Internal Medicine) Physician is a narrow specialty nationwide, with 520 enrolled providers across 48 states and an average of 798 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

300 SEYMOUR AVE STE 203B
DERBY, CT 06418

Provider Details

NPI 1902471352
Specialty Allergy & Immunology (Internal Medicine) Physician
Credentials MD
Gender Female
NPI Issued 05/26/2021

Medicare Part D Prescribing Data

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

39
Total Claims
$6K
Total Drug Cost
15
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
42
Total Day Supply
1,026
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
74.2 years
Avg HCC Risk Score
1.56

Allergy & Immunology (Internal Medicine) Physician Overview

How RACHA ABI MELHEM, MD fits within the Allergy & Immunology (Internal Medicine) Physician landscape nationally.

520
Allergy & Immunology (Internal Medicine) Physician Providers in US
48
States with Allergy & Immunology (Internal Medicine) Physician
798
Avg Claims per Provider

RACHA ABI MELHEM, MD's 39 claims are below the specialty average of 798.

Nearby Allergy & Immunology (Internal Medicine) Physician Providers in Connecticut

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

Compare Allergy & Immunology (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is RACHA ABI MELHEM, MD's specialty?
RACHA ABI MELHEM, MD specializes in Allergy & Immunology (Internal Medicine) Physician and practices in DERBY, Connecticut. Credentials: MD.
How much does RACHA ABI MELHEM, MD prescribe under Medicare Part D?
In 2023, RACHA ABI MELHEM, MD wrote 39 Medicare Part D claims totaling $6K in drug costs for 15 beneficiaries.
Where is RACHA ABI MELHEM, MD located?
RACHA ABI MELHEM, MD is located at 300 SEYMOUR AVE STE 203B, DERBY, CT, 06418. Phone: (203) 516-5303.
What is RACHA ABI MELHEM, MD's NPI number?
RACHA ABI MELHEM, MD's National Provider Identifier (NPI) is 1902471352, issued on 05/26/2021.
How many Allergy & Immunology (Internal Medicine) Physician providers are there in the US?
There are 520 Allergy & Immunology (Internal Medicine) Physician providers across 48 states in the US. The average Allergy & Immunology (Internal Medicine) Physician provider writes 798 Medicare Part D claims per year.
Does RACHA ABI MELHEM, MD accept Medicare?
RACHA ABI MELHEM, MD appears in CMS Medicare data with 39 Part D claims and 15 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RACHA ABI MELHEM, MD's credentials?
RACHA ABI MELHEM, MD's NPI is 1902471352 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