Dr. Wendy L. Foster, MD
- Medicare services, 2021
- 197
- Part D claims, 2022
- 25
- Industry payments
- $30
- Affiliated sites
- 1
- Medical groups
- 2
- Practice address
- 7411 Lake St, River Forest, IL 60305-1876
- Practice phone
- Call (708) 488-1919
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Internal Medicine Center Of Oak Park And River Forest
Primary care practice · River Forest, Illinois
Find Dr. Foster's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Wendy L. Foster is an internist in Oak Park, Illinois
Dr. Foster practices at Internal Medicine Center Of Oak Park And River Forest in River Forest, Illinois.
Dr. Foster's NPI, 1396703070, was assigned on May 3, 2006. Dr. Foster holds Illinois license 036078115.
- NPI
- 1396703070NPI Registry (opens in a new tab)
- NPI enumeration date
- May 3, 2006
- NPI status
- Active
- Practice phone
- (708) 488-1919
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Wendy L. Foster practices in River Forest and Oak Park
Dr. Foster's primary practice is Internal Medicine Center of Oak Park and River Forest, at 7411 Lake St, River Forest, IL 60305-1876. The practice phone is (708) 488-1919. The NPI Registry lists Dr. Foster's practice address as 3 Erie Ct, Oak Park, IL 60302.
- Internal Medicine Center of Oak Park and River ForestPrimary7411 Lake St, River Forest, IL 60305-1876Phone(708) 488-1919
- NPI Registry address3 Erie Ct, Oak Park, IL 60302 · Cook CountyPhone(708) 488-1919
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Wendy L. Foster is affiliated with 1 site of care and 2 medical groups
Dr. Foster's primary practice is Internal Medicine Center Of Oak Park And River Forest in River Forest, Illinois. The medical group on file is Rush Oak Park Physicians Group Lake Street. Dmand AI also links Dr. Foster to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Wendy L. Foster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Foster practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Internal Medicine Center Of Oak Park And River Forest | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Wendy L. Foster is one of 5,652 internists in Illinois
Internal medicine is Dr. Foster's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Foster is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Foster
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Wendy L. Foster billed Medicare for 197 services in 2021
CMS data shows 197 Medicare services from Dr. Foster across 3 procedure codes in 2021. Medicare paid $13,519 for them. Every service was in an office.
Dr. Foster's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 2772021: 16540%
- Surgery
- 2020: 1082021: 3270%
- Tests and treatments
- 2020: 442021: 0100%
- Other services
- 2020: 702021: 0100%
Dr. Foster compared with the Illinois median for internists, 2021
- Dr. Foster
- Illinois median
- Medicare services
- 197vs 56665% below
- Part D claims
- 25vs 28491% below
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Foster's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Foster?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Foster and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Wendy L. Foster's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Foster's median patient age at 71, with 76% women.
Dr. Foster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women76%
- Men24%
Source: Dmand AI Patient Panel Data
Dr. Wendy L. Foster wrote 25 Medicare Part D claims in 2022
In 2022, Dr. Foster wrote 25 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $219 in total drug cost. In 2021, CMS named 1,072 claims across 39 drugs.
Dr. Foster's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 1,0722022: 2598%
Drugs named by CMS: 2 in 2022, 39 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Wendy L. Foster received $30 in industry payments in 2019
CMS Open Payments shows 2 general payments to Dr. Foster from 2 drug and device companies in 2019. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $18.
Companies that paid Dr. Foster the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Wendy L. Foster's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Wendy L. Foster
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Wendy L. Foster's NPI number?
Dr. Wendy L. Foster's NPI number is 1396703070. It was assigned on May 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Wendy L. Foster?
Dr. Wendy L. Foster is an internist in Oak Park, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Wendy L. Foster practice?
Dr. Foster practices at 7411 Lake St, River Forest, IL 60305-1876. Dr. Foster also practices at 3 Erie Ct, Oak Park, IL 60302. Dr. Foster's primary practice is Internal Medicine Center Of Oak Park And River Forest in River Forest, Illinois. Dmand AI also links Dr. Foster to 1 medical group.
What is Dr. Wendy L. Foster's office phone number?
The practice phone on file for Dr. Foster is (708) 488-1919.
What is Dr. Wendy L. Foster's medical license number?
Dr. Foster holds Illinois license 036078115.
What medical group is Dr. Wendy L. Foster part of?
Dr. Foster is linked to Rush Oak Park Physicians Group Lake Street. Dmand AI links Dr. Foster to 1 more medical group.
Does Dr. Wendy L. Foster accept Medicare?
Yes. CMS data shows Dr. Foster billed Medicare for 197 services in 2021.
What services does Dr. Wendy L. Foster bill to Medicare?
In 2021, Dr. Foster's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and office visit, established patient (99213).
What drugs does Dr. Wendy L. Foster prescribe most?
In 2022 Medicare Part D data, Dr. Foster's most prescribed drugs by claims were Furosemide and Oxybutynin Chloride.
Has Dr. Wendy L. Foster received payments from drug or device companies?
CMS Open Payments shows $30 in general payments to Dr. Foster from 2 companies from 2019 to 2019. The largest total came from Novo Nordisk Inc.
How long has Dr. Wendy L. Foster been practicing?
Dr. Foster's NPI was assigned in 2006.
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