2026 NPPES data Internal Medicine Physician NPI 1912343732 MD
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CAROLINE BALL, MD

Internal Medicine Physician in MAYWOOD, 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
3K
Medicare Part D claims · 440 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$123.53
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CAROLINE BALL, MD filed 3,258 Medicare Part D claims in 2023 as a Internal Medicine Physician in MAYWOOD, Illinois, prescribing 84% generic.

3K
Part D claims, 2023
84%
generic prescribing
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.

CAROLINE BALL, MD's Medicare Part D volume vs every U.S. prescriber

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

3,258 Top 11% higher than 89% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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)

CAROLINE BALL, MD 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).

What does the federal data show about CAROLINE BALL, MD?

Quality data not reported

NPI registry status

Active

Issued 05/20/2013

NPI 1912343732

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

3,258 20% 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).

CAROLINE BALL, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 2160 S 1ST AVE, MAYWOOD, IL, 60153, with a listed phone of (708) 216-9000. NPI 1912343732 was issued on 05/20/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BALL 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 3,258 prescription claims written by this provider, covering 440 Medicare beneficiaries and totaling roughly $555K in drug spend, split 16% brand-name and 84% 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.

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

2160 S 1ST AVE
MAYWOOD, IL 60153

Provider Details

NPI 1912343732
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 05/20/2013

Hospital and facility affiliations

Facilities where CAROLINE BALL, MD 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.

ENDEAVOR HEALTH MEDICAL GROUP
EVANSTON, 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 CAROLINE BALL, MD. Source: openpaymentsdata.cms.gov.

Total received

$124

Largest payer

iRhythm Technologies, 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 CAROLINE BALL, MD. To verify CAROLINE BALL, MD'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.

Brand vs generic prescribing mix · Typical

CAROLINE BALL, MD — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 3,258 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.

3,258
Total Claims
$555K
Total Drug Cost
440
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,382
Total Day Supply
248,370
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$489K
Generic Drug Cost
$65K
Antibiotic Claims
65

Patient Demographics

Average Patient Age
74.1 years
Avg HCC Risk Score
1.64
Gender Split
64% female / 36% male
Age Distribution
<65: 39, 65-74: 188, 75-84: 152, 85+: 61

Top Prescribed Drugs (Medicare Part D)

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

What CAROLINE BALL, MD 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
Atorvastatin Calcium
336
Amlodipine Besylate
237
Metoprolol Succinate
222
Eliquis
Apixaban
212
Losartan Potassium
204
Lisinopril
189
Furosemide
168
Carvedilol
107
Rosuvastatin Calcium
97
Metoprolol Tartrate
89

* 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 CAROLINE BALL, 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

CAROLINE BALL, MD's 3,258 claims are above 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 BALL.

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

Frequently Asked Questions

What is CAROLINE BALL, MD's specialty?
CAROLINE BALL, MD specializes in Internal Medicine Physician and practices in MAYWOOD, Illinois. Credentials: MD.
How much does CAROLINE BALL, MD prescribe under Medicare Part D?
In 2023, CAROLINE BALL, MD wrote 3,258 Medicare Part D claims totaling $555K in drug costs for 440 beneficiaries.
Where is CAROLINE BALL, MD located?
CAROLINE BALL, MD is located at 2160 S 1ST AVE, MAYWOOD, IL, 60153. Phone: (708) 216-9000.
What is CAROLINE BALL, MD's NPI number?
CAROLINE BALL, MD's National Provider Identifier (NPI) is 1912343732, issued on 05/20/2013.
Does CAROLINE BALL, MD prescribe more brand-name or generic drugs?
CAROLINE BALL, MD's prescribing is 16% brand-name and 84% generic drugs by claim count, with $489K in brand drug costs.
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 CAROLINE BALL, MD prescribe most often?
Based on 2023 Medicare Part D data, CAROLINE BALL, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CAROLINE BALL, MD accept Medicare?
CAROLINE BALL, MD appears in CMS Medicare data with 3,258 Part D claims and 440 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CAROLINE BALL, MD's credentials?
CAROLINE BALL, MD's NPI is 1912343732 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