2026 NPPES data Family Medicine Physician NPI 1205196441 M.D.
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GENEVIEVE WONG, M.D.

Family Medicine Physician in BERWYN, 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 · 279 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

GENEVIEVE WONG, M.D. filed 2,501 Medicare Part D claims in 2023 as a Family Medicine Physician in BERWYN, Illinois, prescribing 94% generic.

3K
Part D claims, 2023
94%
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.

GENEVIEVE WONG, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

2,501 Top 13% higher than 87% 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)

GENEVIEVE WONG, 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).

What does the federal data show about GENEVIEVE WONG, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/22/2012

NPI 1205196441

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

2,501 27% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Illinois

How Family Medicine Physician compares to other specialties among Illinois providers

Illinois providers

Family Medicine Physician share within Illinois

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

Specialty board-certification context

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

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

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

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

GENEVIEVE WONG, M.D. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. credentials at 3231 EUCLID AVE FL 5, BERWYN, IL, 60402, with a listed phone of (708) 783-2000. NPI 1205196441 was issued on 05/22/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WONG 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 2,501 prescription claims written by this provider, covering 279 Medicare beneficiaries and totaling roughly $74K in drug spend, split 6% brand-name and 94% generic by claim count, with an opioid prescribing rate of 1.1%. 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

3231 EUCLID AVE FL 5
BERWYN, IL 60402

Provider Details

NPI 1205196441
Specialty Family Medicine Physician
Credentials M.D.
Gender Female
NPI Issued 05/22/2012

Hospital and facility affiliations

Facilities where GENEVIEVE WONG, 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.

PERMANENTE MEDICAL GROUP INC
SAN FRANCISCO, CA

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

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 GENEVIEVE WONG, M.D.. To verify GENEVIEVE WONG, 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 · Generic-heavy

GENEVIEVE WONG, M.D. — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 2,501 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.

2,501
Total Claims
$74K
Total Drug Cost
279
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,760
Total Day Supply
197,587
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$31K
Generic Drug Cost
$38K
Opioid Claims
28 (1.1% rate)
Antibiotic Claims
53

Patient Demographics

Average Patient Age
75.4 years
Avg HCC Risk Score
1.14
Gender Split
73% female / 27% male
Age Distribution
<65: 11, 65-74: 130, 75-84: 91, 85+: 47

Top Prescribed Drugs (Medicare Part D)

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

What GENEVIEVE WONG, M.D. 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
239
Amlodipine Besylate
174
Levothyroxine Sodium
139
Losartan Potassium
127
Lisinopril
95
Simvastatin
88
Atenolol
80
Hydrochlorothiazide
68
Lisinopril-Hydrochlorothiazide
Lisinopril/Hydrochlorothiazide
68
Losartan-Hydrochlorothiazide
Losartan/Hydrochlorothiazide
47

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

Family Medicine Physician Overview

How GENEVIEVE WONG, M.D. fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

GENEVIEVE WONG, M.D.'s 2,501 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Illinois

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

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

Frequently Asked Questions

What is GENEVIEVE WONG, M.D.'s specialty?
GENEVIEVE WONG, M.D. specializes in Family Medicine Physician and practices in BERWYN, Illinois. Credentials: M.D..
How much does GENEVIEVE WONG, M.D. prescribe under Medicare Part D?
In 2023, GENEVIEVE WONG, M.D. wrote 2,501 Medicare Part D claims totaling $74K in drug costs for 279 beneficiaries.
Where is GENEVIEVE WONG, M.D. located?
GENEVIEVE WONG, M.D. is located at 3231 EUCLID AVE FL 5, BERWYN, IL, 60402. Phone: (708) 783-2000.
What is GENEVIEVE WONG, M.D.'s NPI number?
GENEVIEVE WONG, M.D.'s National Provider Identifier (NPI) is 1205196441, issued on 05/22/2012.
Does GENEVIEVE WONG, M.D. prescribe more brand-name or generic drugs?
GENEVIEVE WONG, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $31K in brand drug costs.
Does GENEVIEVE WONG, M.D. prescribe opioids?
Yes, GENEVIEVE WONG, M.D. had 28 opioid claims in 2023 with an opioid prescribing rate of 1.1%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does GENEVIEVE WONG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GENEVIEVE WONG, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GENEVIEVE WONG, M.D. accept Medicare?
GENEVIEVE WONG, M.D. appears in CMS Medicare data with 2,501 Part D claims and 279 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GENEVIEVE WONG, M.D.'s credentials?
GENEVIEVE WONG, M.D.'s NPI is 1205196441 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