Dr. Walter J. Whang, MD
- Medicare services, 2024
- 562
- Medicare patients, 2024
- 127
- Part D claims, 2024
- 1,334
- MIPS score, 2024
- 85
- Hospital affiliations
- 2
- Practice address
- 801 South Washington, Naperville, IL 60540
- Practice phone
- Call (630) 527-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Whang'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. Walter J. Whang is a psychiatrist in Naperville, Illinois
Dr. Whang practices at Edward Hospital in Naperville, Illinois, part of Endeavor Health.
Dr. Whang's NPI, 1245217942, was assigned on December 23, 2005. Dr. Whang graduated from Northeastern Ohio University College of Medicine in 1988. Dr. Whang holds Illinois license 036081028.
- NPI
- 1245217942NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315924123
- NPI enumeration date
- December 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (630) 527-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Walter J. Whang practices at Edward Hospital in Naperville, Illinois
Dr. Whang's primary practice is Edward Hospital, at 801 South Washington, Naperville, IL 60540 in Du Page County. The practice phone is (630) 527-3000.
- Edward Hospital801 South Washington, Naperville, IL 60540 · Du Page CountyPhone(630) 527-3000
Source: Dmand AI Affiliation Data
Dr. Walter J. Whang is affiliated with 4 sites of care and 2 medical groups
Dr. Whang's primary practice is Edward Hospital in Naperville, Illinois, part of Endeavor Health. Dr. Whang is also affiliated with Elmhurst Hospital. The medical group on file is Endeavor Health Medical Group. Dmand AI also links Dr. Whang to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Walter J. Whang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Whang practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Edward Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Walter J. Whang is one of 1,527 psychiatrists in Illinois
Psychiatry is Dr. Whang's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Whang is licensed in Illinois.
Specialties and state licenses
- Psychiatry, IllinoisPrimary
Psychiatrists near Dr. Whang
Counts of psychiatrists 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. Walter J. Whang billed Medicare for 562 services in 2024
CMS data shows 562 Medicare services from Dr. Whang across 7 procedure codes in 2024, for 127 Medicare patients. Medicare paid $46,753 for them.
Dr. Whang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 3752024: 3633%
- Office and hospital visits
- 2023: 2652024: 19925%
Where Dr. Whang's Medicare services took place, 2024
- In an office13724%
- In a facility42576%
Dr. Whang compared with the Illinois median for psychiatrists, 2024
- Dr. Whang
- Illinois median
- Medicare services
- 562vs 2032.8 times
- Medicare patients
- 127vs 632.0 times
- Part D claims
- 1,180vs 1746.8 times
Medians across 1,588 psychiatrists in Illinois with Dmand AI profiles that report each measure.
Dr. Whang's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Walter J. Whang treated 127 Medicare patients in 2024, average age 67
CMS counts 127 Medicare patients who saw Dr. Whang in 2024. The largest group is 65 to 74, with 46 patients. 75% of them have anxiety, and 75% have depression. 20% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Whang's median patient age at 57, with 62% women.
Dr. Whang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Whang's Medicare patients by sex, 2024
- Women8466%
- Men4334%
Chronic conditions among Dr. Whang's Medicare patients, 2024
- Anxiety75%
- Depression75%
- Mood disorders75%
- High cholesterol69%
- High blood pressure65%
- Arthritis45%
- Schizophrenia and other psychoses43%
- Bipolar disorder37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Whang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women62%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Walter J. Whang wrote 1,334 Medicare Part D claims in 2024
In 2024, Dr. Whang wrote 1,334 Medicare Part D claims for 72 patients. 98% of them were for generic drugs. CMS names the drug for 1,180 of them, across 34 drugs with 11 or more claims each, at $20,813 in total drug cost. In 2023, CMS named 1,183 claims across 34 drugs.
Dr. Whang's Part D claims by kind of drug, 2024
- Generic1,302 claims98%
- Brand-name and other32 claims2%
Dr. Whang's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Whang's Part D claims, 2024
- Antipsychotics, patients 65 and over12%158 of 1,334 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1832024: 1,180No change
Drugs named by CMS: 34 in 2024, 34 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Walter J. Whang scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Whang for performance year 2024, reported as part of a group. Dr. Whang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Whang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Whang's MIPS scores, performance year 2024
- 85of 100Final score
- 75.9of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Walter J. Whang received $858 in industry payments from 2016 to 2022
CMS Open Payments shows 15 general payments to Dr. Whang from 7 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $424.
General payments to Dr. Whang by program year, 2016 to 2022
General payments to Dr. Whang by kind, 2016 to 2022
- Food and beverage$857100%
- Education$20%
Companies that paid Dr. Whang the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Walter J. Whang graduated from Northeastern Ohio University College of Medicine
Dr. Whang graduated from Northeastern Ohio University College of Medicine in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Walter J. Whang'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Walter J. Whang
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. Walter J. Whang's NPI number?
Dr. Walter J. Whang's NPI number is 1245217942. It was assigned on December 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Walter J. Whang?
Dr. Walter J. Whang is a psychiatrist in Naperville, Illinois. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Walter J. Whang practice?
Dr. Whang practices at 801 South Washington, Naperville, IL 60540. Dr. Whang's primary practice is Edward Hospital in Naperville, Illinois, part of Endeavor Health. Dmand AI also links Dr. Whang to 2 group practices and clinics and 1 medical group.
What is Dr. Walter J. Whang's office phone number?
The practice phone on file for Dr. Whang is (630) 527-3000.
What is Dr. Walter J. Whang's medical license number?
Dr. Whang holds Illinois license 036081028.
Which hospitals is Dr. Walter J. Whang affiliated with?
Dr. Whang practices at Edward Hospital in Naperville, Illinois. Dr. Whang is also affiliated with Elmhurst Hospital.
What medical group is Dr. Walter J. Whang part of?
Dr. Whang is linked to Endeavor Health Medical Group. Dmand AI links Dr. Whang to 1 more medical group.
Does Dr. Walter J. Whang accept Medicare?
Yes. CMS data shows Dr. Whang billed Medicare for 562 services in 2024, and Dr. Whang accepts Medicare assignment.
Does Dr. Walter J. Whang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Whang as offering telehealth services.
What is Dr. Walter J. Whang's MIPS score?
Dr. Whang's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Walter J. Whang see?
CMS counts 127 Medicare patients who saw Dr. Whang in 2024, with an average age of 67.
What services does Dr. Walter J. Whang bill to Medicare?
In 2024, Dr. Whang's most billed Medicare services were psychiatric service (90870), care management and other visits (99442) and psychiatric service (90792).
Where did Dr. Walter J. Whang go to medical school?
Dr. Whang graduated from Northeastern Ohio University College of Medicine in 1988.
What drugs does Dr. Walter J. Whang prescribe most?
In 2024 Medicare Part D data, Dr. Whang's most prescribed drugs by claims were Bupropion XL, Alprazolam and Clonazepam.
Has Dr. Walter J. Whang received payments from drug or device companies?
CMS Open Payments shows $858 in general payments to Dr. Whang from 7 companies from 2016 to 2022. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Walter J. Whang been practicing?
Dr. Whang graduated from medical school in 1988, 38 years ago.
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