2026 NPPES data Specialist NPI 1518946656 M.D.
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DAVID BENDITZSON, M.D.

Specialist 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
394
Medicare Part D claims · 38 beneficiaries · Specialist avg: 1K
What the federal data reveals: DAVID BENDITZSON, M.D. is a Specialist ([object Object]) practicing in CHICAGO, Illinois with a Medicare Part D prescribing footprint of 394 claims across 38 beneficiaries .

What stands out: DAVID BENDITZSON, M.D. filed 394 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.

DAVID BENDITZSON, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 01/16/2006

NPI 1518946656

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

394 73% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

Specialty distribution in Illinois

How Specialist compares to other specialties among Illinois providers

Illinois providers

Specialist share within Illinois

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within Illinois

Specialty board-certification context

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

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

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

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

DAVID BENDITZSON, M.D. is a Specialist provider practicing in CHICAGO, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1518946656. 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.

DAVID BENDITZSON, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 55 E WASHINGTON ST, CHICAGO, IL, 60602, with a listed phone of (312) 266-1222. NPI 1518946656 was issued on 01/16/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BENDITZSON 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 394 prescription claims written by this provider, covering 38 Medicare beneficiaries and totaling roughly $55K 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.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

55 E WASHINGTON ST
CHICAGO, IL 60602

Provider Details

NPI 1518946656
Specialty Specialist
Credentials M.D.
Gender Male
NPI Issued 01/16/2006

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 DAVID BENDITZSON, M.D.. To verify DAVID BENDITZSON, 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.

394
Total Claims
$55K
Total Drug Cost
38
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
972
Total Day Supply
28,594
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
76.0 years
Avg HCC Risk Score
0.74
Gender Split
39% female / 61% 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
Atorvastatin Calcium
49
Telmisartan
48
Rosuvastatin Calcium
25
Amlodipine Besylate
24
Metformin Hcl
22
Jardiance
Empagliflozin
20
Chlorthalidone
18
Gabapentin
18
Losartan Potassium
15
Carvedilol
11

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

Specialist Overview

How DAVID BENDITZSON, M.D. fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

DAVID BENDITZSON, M.D.'s 394 claims are below the specialty average of 1,474.

Nearby Specialist Providers in Illinois

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

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is DAVID BENDITZSON, M.D.'s specialty?
DAVID BENDITZSON, M.D. specializes in Specialist and practices in CHICAGO, Illinois. Credentials: M.D..
How much does DAVID BENDITZSON, M.D. prescribe under Medicare Part D?
In 2023, DAVID BENDITZSON, M.D. wrote 394 Medicare Part D claims totaling $55K in drug costs for 38 beneficiaries.
Where is DAVID BENDITZSON, M.D. located?
DAVID BENDITZSON, M.D. is located at 55 E WASHINGTON ST, CHICAGO, IL, 60602. Phone: (312) 266-1222.
What is DAVID BENDITZSON, M.D.'s NPI number?
DAVID BENDITZSON, M.D.'s National Provider Identifier (NPI) is 1518946656, issued on 01/16/2006.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does DAVID BENDITZSON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DAVID BENDITZSON, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Telmisartan, Rosuvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID BENDITZSON, M.D. accept Medicare?
DAVID BENDITZSON, M.D. appears in CMS Medicare data with 394 Part D claims and 38 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID BENDITZSON, M.D.'s credentials?
DAVID BENDITZSON, M.D.'s NPI is 1518946656 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