2026 NPPES data Hospitalist Physician NPI 1356821649
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IAN MARTINEZ FLORES

Hospitalist 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
401
Medicare Part D claims · 181 beneficiaries · Hospitalist Physician avg: 888
Industry payments
$11.26
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

IAN MARTINEZ FLORES filed 401 Medicare Part D claims in 2023 as a Hospitalist Physician in CHICAGO, Illinois.

401
Part D claims, 2023
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

IAN MARTINEZ FLORES's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

401 Top 38% higher than 62% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

IAN MARTINEZ FLORES practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about IAN MARTINEZ FLORES?

Quality data not reported

NPI registry status

Active

Issued 08/16/2018

NPI 1356821649

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

401 55% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Illinois

How Hospitalist Physician compares to other specialties among Illinois providers

Illinois providers

Hospitalist Physician share within Illinois

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

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).

IAN MARTINEZ FLORES appears in the CMS NPPES registry as a Hospitalist Physician provider at 1901 W HARRISON ST, CHICAGO, IL, 60612, with a listed phone of (312) 864-6000. NPI 1356821649 was issued on 08/16/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MARTINEZ FLORES 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 401 prescription claims written by this provider, covering 181 Medicare beneficiaries and totaling roughly $25K in drug spend, with an opioid prescribing rate of 8.0%. 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

1901 W HARRISON ST
CHICAGO, IL 60612

Provider Details

NPI 1356821649
Specialty Hospitalist Physician
Gender Male
NPI Issued 08/16/2018

Hospital and facility affiliations

Facilities where IAN MARTINEZ FLORES 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.

CARLE HEALTH CARE INCORPORATED
PEORIA, IL
METHODIST MEDICAL CENTER OF ILLINOIS
PEORIA, IL
WARREN CLINIC INC
MUSKOGEE, OK

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 IAN MARTINEZ FLORES. Source: openpaymentsdata.cms.gov.

Total received

$11

Largest payer

ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)

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 IAN MARTINEZ FLORES. To verify IAN MARTINEZ FLORES'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.

401
Total Claims
$25K
Total Drug Cost
181
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
451
Total Day Supply
9,639
Generic Drug Cost
$5K
Opioid Claims
32 (8.0% rate)
Antibiotic Claims
56

Patient Demographics

Average Patient Age
75.9 years
Avg HCC Risk Score
2.36
Gender Split
60% female / 40% male
Age Distribution
<65: 17, 65-74: 60, 75-84: 71, 85+: 33

Top Prescribed Drugs (Medicare Part D)

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

What IAN MARTINEZ FLORES prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Furosemide
33
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
28
Prednisone
26
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
20
Amlodipine Besylate
18
Eliquis
Apixaban
16
Clopidogrel
Clopidogrel Bisulfate
11

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

Hospitalist Physician Overview

How IAN MARTINEZ FLORES fits within the Hospitalist Physician landscape nationally.

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

IAN MARTINEZ FLORES's 401 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in Illinois

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

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

Frequently Asked Questions

What is IAN MARTINEZ FLORES's specialty?
IAN MARTINEZ FLORES specializes in Hospitalist Physician and practices in CHICAGO, Illinois.
How much does IAN MARTINEZ FLORES prescribe under Medicare Part D?
In 2023, IAN MARTINEZ FLORES wrote 401 Medicare Part D claims totaling $25K in drug costs for 181 beneficiaries.
Where is IAN MARTINEZ FLORES located?
IAN MARTINEZ FLORES is located at 1901 W HARRISON ST, CHICAGO, IL, 60612. Phone: (312) 864-6000.
What is IAN MARTINEZ FLORES's NPI number?
IAN MARTINEZ FLORES's National Provider Identifier (NPI) is 1356821649, issued on 08/16/2018.
Does IAN MARTINEZ FLORES prescribe opioids?
Yes, IAN MARTINEZ FLORES had 32 opioid claims in 2023 with an opioid prescribing rate of 8.0%.
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 IAN MARTINEZ FLORES prescribe most often?
Based on 2023 Medicare Part D data, IAN MARTINEZ FLORES's most frequently prescribed drugs include Furosemide, Amoxicillin-Clavulanate Potass, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does IAN MARTINEZ FLORES accept Medicare?
IAN MARTINEZ FLORES appears in CMS Medicare data with 401 Part D claims and 181 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify IAN MARTINEZ FLORES's credentials?
IAN MARTINEZ FLORES's NPI is 1356821649. 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