Dr. William H. Kobak, MD
- Medicare services, 2024
- 91
- Medicare patients, 2024
- 75
- Part D claims, 2024
- 279
- Publications
- 14
- MIPS score, 2024
- 95
- Practice address
- 1740 West Taylor St Suite 1400, Chicago, IL 60612
- Practice phone
- Call (312) 996-3900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Kobak'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. William H. Kobak is a gynecology physician in Chicago, Illinois
Dr. Kobak practices at University of Illinois Hospital in Chicago, Illinois, part of University of Illinois System.
Dr. Kobak's NPI, 1023007887, was assigned on October 14, 2005. Dr. Kobak graduated from Indiana University School of Medicine in 1989. Dr. Kobak holds Illinois license 036091917.
- NPI
- 1023007887NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022073352
- NPI enumeration date
- October 14, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (312) 996-3900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William H. Kobak practices at University of Illinois Hospital in Chicago, Illinois
Dr. Kobak's primary practice is University of Illinois Hospital, at 1740 West Taylor St Suite 1400, Chicago, IL 60612 in Cook County. The practice phone is (312) 996-3900.
- University of Illinois Hospital1740 West Taylor St Suite 1400, Chicago, IL 60612 · Cook CountyPhone(312) 996-3900
Source: Dmand AI Affiliation Data
Dr. William H. Kobak is affiliated with 3 sites of care and 4 medical groups
Dr. Kobak's primary practice is University of Illinois Hospital in Chicago, Illinois, part of University of Illinois System. Dr. Kobak is also affiliated with John H. Stroger, Jr. Hospital of Cook County. The medical group on file is University of Illinois Physicians Group (UIPG). Dmand AI also links Dr. Kobak to 3 more medical groups and 1 group practice or clinic, 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. William H. Kobak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kobak practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Illinois Hospital | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across University of Illinois System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William H. Kobak is one of 71 gynecology physicians in Illinois
Gynecology is Dr. Kobak's primary specialty in the NPI Registry, under taxonomy code 207VG0400X. Dr. Kobak is licensed in Illinois.
Specialties and state licenses
- Gynecology, IllinoisPrimary
Gynecology physicians near Dr. Kobak
Counts of gynecology physicians 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. William H. Kobak billed Medicare for 91 services in 2024
CMS data shows 91 Medicare services from Dr. Kobak across 2 procedure codes in 2024, all of them office visits, for 75 Medicare patients. Medicare paid $3,954 for them.
Dr. Kobak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 842024: 918%
Where Dr. Kobak's Medicare services took place, 2024
- In an office3640%
- In a facility5560%
Dr. Kobak compared with the Illinois median for gynecology physicians, 2024
- Dr. Kobak
- Illinois median
- Medicare services
- 91vs 10110% below
- Medicare patients
- 75vs 817% below
- Part D claims
- 231vs 514.5 times
Medians across 65 gynecology physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Kobak'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.
Need commercial claims for Dr. Kobak?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kobak and other gynecology physicians in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William H. Kobak treated 75 Medicare patients in 2024, average age 70
CMS counts 75 Medicare patients who saw Dr. Kobak in 2024. The largest group is 65 to 74, with 36 patients. 75% of them have high blood pressure, and 68% have high cholesterol. 56% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kobak's median patient age at 65, with 94% women.
Dr. Kobak's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Kobak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Arthritis56%
- Mood disorders39%
- Diabetes33%
- Depression32%
- Anxiety31%
- Osteoporosis24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kobak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women94%
- Men2%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William H. Kobak wrote 279 Medicare Part D claims in 2024
In 2024, Dr. Kobak wrote 279 Medicare Part D claims for 87 patients. 78% of them were for generic drugs. CMS names the drug for 231 of them, across 7 drugs with 11 or more claims each, at $52,842 in total drug cost. In 2023, CMS named 248 claims across 7 drugs.
Dr. Kobak's Part D claims by kind of drug, 2024
- Generic218 claims78%
- Brand-name61 claims22%
Dr. Kobak'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. Kobak's Part D claims, 2024
- Antibiotics6%18 of 279 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: 2482024: 2317%
Drugs named by CMS: 7 in 2024, 7 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. William H. Kobak scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Kobak for performance year 2024, reported as part of a group. Dr. Kobak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Kobak as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Kobak's MIPS scores, performance year 2024
- 95of 100Final score
- 74.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 85of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of the uterus: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. William H. Kobak has 14 publications on record
Dmand AI links 14 papers to Dr. Kobak, published from 2011 to 2024. 2022 was the busiest year, with 4. The most frequent topics are Vulvodynia, Acupuncture Therapy and Biomechanical Phenomena. Dr. Kobak has published most often in Contemp Clin Trials Commun. Dr. Kobak's most frequent co-authors are Jacob Rotmensch, MD, Lopa K. Pandya, MD and Charlotte Mary Ter Haar, MD.
Dr. Kobak's papers by year, 2011 to 2024
Topics Dr. Kobak writes about most
- Vulvodynia
- Acupuncture Therapy
- Biomechanical Phenomena
- Connective Tissue
- Double-Blind Method
- Dyspareunia
- Ehlers-Danlos Syndrome
- Elasticity
Dr. Kobak's most frequent co-authors
- Jacob Rotmensch, MD2 shared papers
- Lopa K. Pandya, MD1 shared paper
- Charlotte Mary Ter Haar, MD1 shared paper
Recent publications by Dr. Kobak
Urogynecology (Phila)
J Midwifery Womens Health
Contemp Clin Trials Commun
See who Dr. Kobak researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kobak works with, so you can find a warm path to the right gynecology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William H. Kobak received $634 in industry payments from 2018 to 2025
CMS Open Payments shows 10 general payments to Dr. Kobak from 4 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 84% of the total. Medtronic, Inc. paid the most, $297.
General payments to Dr. Kobak by program year, 2018 to 2025
General payments to Dr. Kobak by kind, 2018 to 2025
- Food and beverage$53384%
- Education$10016%
Companies that paid Dr. Kobak the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William H. Kobak graduated from Indiana University School of Medicine
Dr. Kobak graduated from Indiana University School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William H. Kobak'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. William H. Kobak
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. William H. Kobak's NPI number?
Dr. William H. Kobak's NPI number is 1023007887. It was assigned on October 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William H. Kobak?
Dr. William H. Kobak is a gynecology physician in Chicago, Illinois. The primary specialty in the NPI Registry is Gynecology Physician (taxonomy code 207VG0400X).
Where does Dr. William H. Kobak practice?
Dr. Kobak practices at 1740 West Taylor St Suite 1400, Chicago, IL 60612. Dr. Kobak's primary practice is University of Illinois Hospital in Chicago, Illinois, part of University of Illinois System. Dmand AI also links Dr. Kobak to 3 medical groups and 1 group practice or clinic.
What is Dr. William H. Kobak's office phone number?
The practice phone on file for Dr. Kobak is (312) 996-3900.
What is Dr. William H. Kobak's medical license number?
Dr. Kobak holds Illinois license 036091917.
Which hospitals is Dr. William H. Kobak affiliated with?
Dr. Kobak practices at University of Illinois Hospital in Chicago, Illinois. Dr. Kobak is also affiliated with John H. Stroger, Jr. Hospital of Cook County.
What medical group is Dr. William H. Kobak part of?
Dr. Kobak is linked to University of Illinois Physicians Group (UIPG). Dmand AI links Dr. Kobak to 3 more medical groups.
Does Dr. William H. Kobak accept Medicare?
Yes. CMS data shows Dr. Kobak billed Medicare for 91 services in 2024, and Dr. Kobak accepts Medicare assignment.
Does Dr. William H. Kobak offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Kobak as offering telehealth services.
What is Dr. William H. Kobak's MIPS score?
Dr. Kobak's MIPS final score for performance year 2024 is 95 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. William H. Kobak see?
CMS counts 75 Medicare patients who saw Dr. Kobak in 2024, with an average age of 70.
What services does Dr. William H. Kobak bill to Medicare?
In 2024, Dr. Kobak's most billed Medicare services were office visit, established patient (99213) and office visit, established patient (99212).
Where did Dr. William H. Kobak go to medical school?
Dr. Kobak graduated from Indiana University School of Medicine in 1989.
What drugs does Dr. William H. Kobak prescribe most?
In 2024 Medicare Part D data, Dr. Kobak's most prescribed drugs by claims were Estradiol, Myrbetriq and Methenamine Hippurate.
Has Dr. William H. Kobak received payments from drug or device companies?
CMS Open Payments shows $634 in general payments to Dr. Kobak from 4 companies from 2018 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. William H. Kobak been practicing?
Dr. Kobak graduated from medical school in 1989, 37 years ago.
Does Dr. William H. Kobak do research?
Dmand AI links 14 publications to Dr. Kobak, published from 2011 to 2024.
Who does Dr. William H. Kobak publish with?
Dr. Kobak's most frequent co-authors are Jacob Rotmensch, MD (2 shared papers), Lopa K. Pandya, MD (1 shared paper) and Charlotte Mary Ter Haar, MD (1 shared paper).
Selling to gynecology practices?
See gynecology physicians in Illinois by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card