2026 NPPES data Internal Medicine Physician NPI 1891963344 MD
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ZAHER AL DIK, MD

Internal Medicine Physician in FORT WAYNE, Indiana. 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
357
Medicare Part D claims · 136 beneficiaries · Internal Medicine Physician avg: 3K
Industry payments
$125
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ZAHER AL DIK, MD is a Internal Medicine Physician ([object Object]) practicing in FORT WAYNE, Indiana with a Medicare Part D prescribing footprint of 357 claims across 136 beneficiaries . Industry payments of $125 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ZAHER AL DIK, MD filed 357 Medicare Part D claims in 2023 across FORT WAYNE, Indiana. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

ZAHER AL DIK, 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).

ZAHER AL DIK, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 02/19/2008

NPI 1891963344

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

357 87% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Indiana

How Internal Medicine Physician compares to other specialties among Indiana providers

Indiana providers

Internal Medicine Physician share within Indiana

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within Indiana

Specialty board-certification context

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

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

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

0%100%78%
Est. board-certified rate (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).

ZAHER AL DIK, MD is a Internal Medicine Physician provider practicing in FORT WAYNE, Indiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1891963344. 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.

ZAHER AL DIK, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 700 BROADWAY, FORT WAYNE, IN, 46802, with a listed phone of (260) 425-3000. NPI 1891963344 was issued on 02/19/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AL DIK 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 357 prescription claims written by this provider, covering 136 Medicare beneficiaries and totaling roughly $25K in drug spend, with an opioid prescribing rate of 4.2%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

700 BROADWAY
FORT WAYNE, IN 46802

Provider Details

NPI 1891963344
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 02/19/2008

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 ZAHER AL DIK, MD. Source: openpaymentsdata.cms.gov.

Total received

$125

Largest payer

Phathom Pharmaceuticals, Inc.

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.

357
Total Claims
$25K
Total Drug Cost
136
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
422
Total Day Supply
10,082
Generic Drug Cost
$5K
Opioid Claims
15 (4.2% rate)
Antibiotic Claims
60

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
2.33
Gender Split
49% female / 51% male
Age Distribution
<65: 32, 65-74: 41, 75-84: 41, 85+: 22

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Eliquis
Apixaban
27
Metoprolol Succinate
22
Clopidogrel
Clopidogrel Bisulfate
21
Metoprolol Tartrate
20
Furosemide
18
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
17
Cephalexin
16
Pantoprazole Sodium
12
Lisinopril
11
Prednisone
11

* 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 ZAHER AL DIK, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

ZAHER AL DIK, MD's 357 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Indiana

Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as AL DIK.

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ZAHER AL DIK, MD's specialty?
ZAHER AL DIK, MD specializes in Internal Medicine Physician and practices in FORT WAYNE, Indiana. Credentials: MD.
How much does ZAHER AL DIK, MD prescribe under Medicare Part D?
In 2023, ZAHER AL DIK, MD wrote 357 Medicare Part D claims totaling $25K in drug costs for 136 beneficiaries.
Where is ZAHER AL DIK, MD located?
ZAHER AL DIK, MD is located at 700 BROADWAY, FORT WAYNE, IN, 46802. Phone: (260) 425-3000.
What is ZAHER AL DIK, MD's NPI number?
ZAHER AL DIK, MD's National Provider Identifier (NPI) is 1891963344, issued on 02/19/2008.
Does ZAHER AL DIK, MD prescribe opioids?
Yes, ZAHER AL DIK, MD had 15 opioid claims in 2023 with an opioid prescribing rate of 4.2%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does ZAHER AL DIK, MD prescribe most often?
Based on 2023 Medicare Part D data, ZAHER AL DIK, MD's most frequently prescribed drugs include Eliquis, Metoprolol Succinate, Clopidogrel. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ZAHER AL DIK, MD accept Medicare?
ZAHER AL DIK, MD appears in CMS Medicare data with 357 Part D claims and 136 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ZAHER AL DIK, MD's credentials?
ZAHER AL DIK, MD's NPI is 1891963344 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