2026 NPPES data Hospitalist Physician NPI 1427623651 M.D.
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MARIAM HASHMI, M.D.

Hospitalist Physician in WATERLOO, Iowa. 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
162
Medicare Part D claims · 45 beneficiaries · Hospitalist Physician avg: 888
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: MARIAM HASHMI, M.D. is a Hospitalist Physician ([object Object]) practicing in WATERLOO, Iowa with a Medicare Part D prescribing footprint of 162 claims across 45 beneficiaries — 15% brand-name prescribing .

What stands out: MARIAM HASHMI, M.D. filed 162 Medicare Part D claims in 2023 across WATERLOO, Iowa. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

MARIAM HASHMI, 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).

MARIAM HASHMI, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/20/2021

NPI 1427623651

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

162 82% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Iowa

How Hospitalist Physician compares to other specialties among Iowa providers

Iowa providers

Hospitalist Physician share within Iowa

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

Specialty board-certification context

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

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

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

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

MARIAM HASHMI, M.D. is a Hospitalist Physician provider practicing in WATERLOO, Iowa, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1427623651. 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.

MARIAM HASHMI, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 1825 LOGAN AVENUE, WATERLOO, IA, 50703, with a listed phone of (319) 235-3604. NPI 1427623651 was issued on 05/20/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HASHMI 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 162 prescription claims written by this provider, covering 45 Medicare beneficiaries and totaling roughly $20K in drug spend, split 15% brand-name and 85% generic by claim count. 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

1825 LOGAN AVENUE
WATERLOO, IA 50703

Provider Details

NPI 1427623651
Specialty Hospitalist Physician
Credentials M.D.
Gender Female
NPI Issued 05/20/2021

Hospital and facility affiliations

Facilities where MARIAM HASHMI, 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.

IOWA PHYSICIANS CLINIC MEDICAL FOUNDATION
WATERLOO, IA

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

Brand vs generic prescribing mix · Typical

MARIAM HASHMI, M.D. — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 162 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

162
Total Claims
$20K
Total Drug Cost
45
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
358
Total Day Supply
10,395
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$17K
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
2.58
Gender Split
47% female / 53% 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
Amlodipine Besylate
13

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

Hospitalist Physician Overview

How MARIAM HASHMI, M.D. fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

MARIAM HASHMI, M.D.'s 162 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in Iowa

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

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARIAM HASHMI, M.D.'s specialty?
MARIAM HASHMI, M.D. specializes in Hospitalist Physician and practices in WATERLOO, Iowa. Credentials: M.D..
How much does MARIAM HASHMI, M.D. prescribe under Medicare Part D?
In 2023, MARIAM HASHMI, M.D. wrote 162 Medicare Part D claims totaling $20K in drug costs for 45 beneficiaries.
Where is MARIAM HASHMI, M.D. located?
MARIAM HASHMI, M.D. is located at 1825 LOGAN AVENUE, WATERLOO, IA, 50703. Phone: (319) 235-3604.
What is MARIAM HASHMI, M.D.'s NPI number?
MARIAM HASHMI, M.D.'s National Provider Identifier (NPI) is 1427623651, issued on 05/20/2021.
Does MARIAM HASHMI, M.D. prescribe more brand-name or generic drugs?
MARIAM HASHMI, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $17K in brand drug costs.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does MARIAM HASHMI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MARIAM HASHMI, M.D.'s most frequently prescribed drugs include Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARIAM HASHMI, M.D. accept Medicare?
MARIAM HASHMI, M.D. appears in CMS Medicare data with 162 Part D claims and 45 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARIAM HASHMI, M.D.'s credentials?
MARIAM HASHMI, M.D.'s NPI is 1427623651 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