2026 NPPES data General Practice Physician NPI 1669682555 M.D.
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MARIA KRASZYNSKA, M.D.

General Practice Physician in NORTHBROOK, 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
115
Medicare Part D claims · General Practice Physician avg: 3K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MARIA KRASZYNSKA, M.D. filed 115 Medicare Part D claims in 2023 as a General Practice Physician in NORTHBROOK, Illinois, prescribing 89% generic.

115
Part D claims, 2023
89%
generic prescribing

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.

MARIA KRASZYNSKA, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

115 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 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-eligible specialty (heuristic — not verified)

MARIA KRASZYNSKA, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about MARIA KRASZYNSKA, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/22/2007

NPI 1669682555

Primary specialty

General Practice Physician

Mid-sized

16,677 US NPIs in this specialty

Medicare Part D claims

115 96% vs specialty avg

2023 prescription claims

Specialty avg: 2,872

Specialty distribution in Illinois

How General Practice Physician compares to other specialties among Illinois providers

Illinois providers

General Practice Physician share within Illinois

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

Specialty board-certification context

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

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

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

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

MARIA KRASZYNSKA, M.D. is a General Practice Physician provider practicing in NORTHBROOK, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1669682555. 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.

MARIA KRASZYNSKA, M.D. appears in the CMS NPPES registry as a General Practice Physician provider holding M.D. credentials at 601 SKOKIE BLVD, NORTHBROOK, IL, 60062, with a listed phone of (847) 559-3200. NPI 1669682555 was issued on 05/22/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KRASZYNSKA 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 115 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $99K in drug spend, split 11% brand-name and 89% 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.

General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 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

601 SKOKIE BLVD
NORTHBROOK, IL 60062

Provider Details

NPI 1669682555
Specialty General Practice Physician
Credentials M.D.
Gender Female
NPI Issued 05/22/2007

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 MARIA KRASZYNSKA, M.D.. To verify MARIA KRASZYNSKA, 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.

Brand vs generic prescribing mix · Typical

MARIA KRASZYNSKA, M.D. — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 115 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.

115
Total Claims
$99K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
253
Total Day Supply
7,537
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$89K
Generic Drug Cost
$9K
Antibiotic Claims
40

Patient Demographics

Average Patient Age
64.9 years
Avg HCC Risk Score
0.58

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Rifampin
14
Clarithromycin
12
Hydroxychloroquine Sulfate
12
Levothyroxine Sodium
12
Metronidazole
11

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

General Practice Physician Overview

How MARIA KRASZYNSKA, M.D. fits within the General Practice Physician landscape nationally.

16,677
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider

MARIA KRASZYNSKA, M.D.'s 115 claims are below the specialty average of 2,872.

Nearby General Practice Physician Providers in Illinois

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

Compare General Practice Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARIA KRASZYNSKA, M.D.'s specialty?
MARIA KRASZYNSKA, M.D. specializes in General Practice Physician and practices in NORTHBROOK, Illinois. Credentials: M.D..
How much does MARIA KRASZYNSKA, M.D. prescribe under Medicare Part D?
In 2023, MARIA KRASZYNSKA, M.D. wrote 115 Medicare Part D claims totaling $99K in drug costs for N/A beneficiaries.
Where is MARIA KRASZYNSKA, M.D. located?
MARIA KRASZYNSKA, M.D. is located at 601 SKOKIE BLVD, NORTHBROOK, IL, 60062. Phone: (847) 559-3200.
What is MARIA KRASZYNSKA, M.D.'s NPI number?
MARIA KRASZYNSKA, M.D.'s National Provider Identifier (NPI) is 1669682555, issued on 05/22/2007.
Does MARIA KRASZYNSKA, M.D. prescribe more brand-name or generic drugs?
MARIA KRASZYNSKA, M.D.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $89K in brand drug costs.
How many General Practice Physician providers are there in the US?
There are 16,677 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does MARIA KRASZYNSKA, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MARIA KRASZYNSKA, M.D.'s most frequently prescribed drugs include Rifampin, Clarithromycin, Hydroxychloroquine Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARIA KRASZYNSKA, M.D. accept Medicare?
MARIA KRASZYNSKA, M.D. appears in CMS Medicare data with 115 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARIA KRASZYNSKA, M.D.'s credentials?
MARIA KRASZYNSKA, M.D.'s NPI is 1669682555 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