2026 NPPES data Internal Medicine Physician NPI 1407422629 M.D.
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MUHAMMAD AHMAD, M.D.

Internal Medicine Physician in CHICAGO, Illinois. 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
179
Medicare Part D claims · 77 beneficiaries · Internal Medicine Physician avg: 3K
Industry payments
$169.23
7 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: MUHAMMAD AHMAD, M.D. is a Internal Medicine Physician ([object Object]) practicing in CHICAGO, Illinois with a Medicare Part D prescribing footprint of 179 claims across 77 beneficiaries . Industry payments of $169.23 across 7 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: MUHAMMAD AHMAD, M.D. filed 179 Medicare Part D claims in 2023 across CHICAGO, Illinois. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

MUHAMMAD AHMAD, M.D. 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).

MUHAMMAD AHMAD, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/28/2021

NPI 1407422629

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

179 93% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Illinois

How Internal Medicine Physician compares to other specialties among Illinois providers

Illinois providers

Internal Medicine Physician share within Illinois

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

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).

MUHAMMAD AHMAD, M.D. is a Internal Medicine Physician provider practicing in CHICAGO, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1407422629. 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.

MUHAMMAD AHMAD, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 3134 N CLARK ST, CHICAGO, IL, 60657, with a listed phone of (773) 296-5944. NPI 1407422629 was issued on 05/28/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AHMAD 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 179 prescription claims written by this provider, covering 77 Medicare beneficiaries and totaling roughly $24K 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.

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

3134 N CLARK ST
CHICAGO, IL 60657

Provider Details

NPI 1407422629
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 05/28/2021

Hospital and facility affiliations

Facilities where MUHAMMAD AHMAD, 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.

MOUNT SINAI COMMUNITY FOUNDATION
CHICAGO, IL

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 MUHAMMAD AHMAD, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$169

Largest payer

Amgen 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.

License & disciplinary context — Illinois IDFPR 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 — they are NOT specific to MUHAMMAD AHMAD, M.D.. To verify MUHAMMAD AHMAD, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

179
Total Claims
$24K
Total Drug Cost
77
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
358
Total Day Supply
9,447
Generic Drug Cost
$2K
Antibiotic Claims
22

Patient Demographics

Average Patient Age
72.3 years
Avg HCC Risk Score
2.47
Gender Split
56% female / 44% male

Internal Medicine Physician Overview

How MUHAMMAD AHMAD, M.D. 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

MUHAMMAD AHMAD, M.D.'s 179 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Illinois

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

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

Frequently Asked Questions

What is MUHAMMAD AHMAD, M.D.'s specialty?
MUHAMMAD AHMAD, M.D. specializes in Internal Medicine Physician and practices in CHICAGO, Illinois. Credentials: M.D..
How much does MUHAMMAD AHMAD, M.D. prescribe under Medicare Part D?
In 2023, MUHAMMAD AHMAD, M.D. wrote 179 Medicare Part D claims totaling $24K in drug costs for 77 beneficiaries.
Where is MUHAMMAD AHMAD, M.D. located?
MUHAMMAD AHMAD, M.D. is located at 3134 N CLARK ST, CHICAGO, IL, 60657. Phone: (773) 296-5944.
What is MUHAMMAD AHMAD, M.D.'s NPI number?
MUHAMMAD AHMAD, M.D.'s National Provider Identifier (NPI) is 1407422629, issued on 05/28/2021.
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.
Does MUHAMMAD AHMAD, M.D. accept Medicare?
MUHAMMAD AHMAD, M.D. appears in CMS Medicare data with 179 Part D claims and 77 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MUHAMMAD AHMAD, M.D.'s credentials?
MUHAMMAD AHMAD, M.D.'s NPI is 1407422629 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.
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