Dr. William Patrick Zeller, MD
- Medicare services, 2022
- 172
- Part D claims, 2024
- 17
- Publications
- 1
- Industry payments
- $27,839
- Affiliated sites
- 1
- Practice address
- 4440 W 95th St, Oak Lawn, IL 60453
- Practice phone
- Call (708) 684-5753
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advocate Christ Medical Center (Main Campus)
Oak Lawn, Illinois
Find Dr. Zeller'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 Patrick Zeller is a pediatric endocrinology physician in Oak Lawn, Illinois
Dr. Zeller practices at Advocate Christ Medical Center (Main Campus) in Oak Lawn, Illinois.
Dr. Zeller's NPI, 1699738922, was assigned on April 8, 2006. Dr. Zeller graduated from Loyola University of Chicago, Stritch School of Medicine in 1977. Dr. Zeller holds Illinois license 036-057718.
- NPI
- 1699738922NPI Registry (opens in a new tab)
- NPI enumeration date
- April 8, 2006
- NPI status
- Active
- Practice phone
- (708) 684-5753
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. William Patrick Zeller practices at Advocate Christ Medical Center (Main Campus) in Oak Lawn, Illinois
Dr. Zeller's primary practice is Advocate Christ Medical Center (Main Campus), at 4440 W 95th St, Oak Lawn, IL 60453 in Cook County. The practice phone is (708) 684-5753.
- Advocate Christ Medical Center (Main Campus)4440 W 95th St, Oak Lawn, IL 60453 · Cook CountyPhone(708) 684-5753
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William Patrick Zeller is affiliated with 2 sites of care and 2 medical groups
Dr. Zeller's primary practice is Advocate Christ Medical Center (Main Campus) in Oak Lawn, Illinois. The medical group on file is ACCESS Community Health Network. Dmand AI also links Dr. Zeller to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William Patrick Zeller's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zeller practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Christ Medical Center (Main Campus) | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Patrick Zeller is one of 71 pediatric endocrinology physicians in Illinois
Pediatric endocrinology is Dr. Zeller's primary specialty in the NPI Registry, under taxonomy code 2080P0205X. Dr. Zeller is licensed in Illinois.
Specialties and state licenses
- Pediatric endocrinology, IllinoisPrimary
Pediatric endocrinology physicians near Dr. Zeller
Counts of pediatric endocrinology 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 Patrick Zeller billed Medicare for 172 services in 2022
CMS data shows 172 Medicare services from Dr. Zeller across 4 procedure codes in 2022. Medicare paid $9,400 for them. Every service was in an office.
Dr. Zeller's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 2412022: 8664%
- Tests and treatments
- 2021: 1132022: 4758%
- Lab and pathology
- 2021: 962022: 3959%
Dr. Zeller compared with the Illinois median for pediatric endocrinology physicians, 2022
- Dr. Zeller
- Illinois median
- Part D claims
- 53vs 143.8 times
Medians across 18 pediatric endocrinology physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Zeller's most billed Medicare procedure codes, 2022
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zeller and other pediatric endocrinology physicians in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Patrick Zeller's patients have a median age of 23
Across all payers, Dmand AI patient panel data puts Dr. Zeller's median patient age at 23, with 43% women.
Dr. Zeller's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 23
Patient panel by sex, all payers
- Women43%
- Men57%
Source: Dmand AI Patient Panel Data
Dr. William Patrick Zeller wrote 17 Medicare Part D claims in 2024
In 2024, Dr. Zeller wrote 17 Medicare Part D claims. They cover 3 drugs, with $67,477 in total drug cost. In 2022, CMS named 349 claims across 14 drugs.
Dr. Zeller's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 3492023: 5385%
Drugs named by CMS: 3 in 2023, 14 in 2022.
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
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Dr. William Patrick Zeller has 1 publication on record
Dmand AI links 1 paper to Dr. Zeller in 2021.
Recent publications by Dr. Zeller
See who Dr. Zeller researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zeller works with, so you can find a warm path to the right pediatric endocrinology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Patrick Zeller received $27,839 in industry payments from 2016 to 2025
CMS Open Payments shows 71 general payments to Dr. Zeller from 16 drug and device companies from 2016 to 2025. Honoraria make up the largest share, 38% of the total. Dexcom, Inc. paid the most, $16,455. It also lists 5 research payments totaling $39,200 from 2016 to 2020.
General payments to Dr. Zeller by program year, 2016 to 2025
General payments to Dr. Zeller by kind, 2016 to 2025
- Honoraria$10,70038%
- Consulting fees$7,20026%
- Travel and lodging$4,20315%
- Food and beverage$3,63113%
- Other$2,1058%
Companies that paid Dr. Zeller the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Patrick Zeller graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. Zeller graduated from Loyola University of Chicago, Stritch School of Medicine in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Patrick Zeller'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Data |
| 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) |
| 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 Patrick Zeller
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 Patrick Zeller's NPI number?
Dr. William Patrick Zeller's NPI number is 1699738922. It was assigned on April 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Patrick Zeller?
Dr. William Patrick Zeller is a pediatric endocrinology physician in Oak Lawn, Illinois. The primary specialty in the NPI Registry is Pediatric Endocrinology Physician (taxonomy code 2080P0205X).
Where does Dr. William Patrick Zeller practice?
Dr. Zeller practices at 4440 W 95th St, Oak Lawn, IL 60453. Dr. Zeller's primary practice is Advocate Christ Medical Center (Main Campus) in Oak Lawn, Illinois. Dmand AI also links Dr. Zeller to 1 group practice or clinic and 1 medical group.
What is Dr. William Patrick Zeller's office phone number?
The practice phone on file for Dr. Zeller is (708) 684-5753.
What is Dr. William Patrick Zeller's medical license number?
Dr. Zeller holds Illinois license 036-057718.
What medical group is Dr. William Patrick Zeller part of?
Dr. Zeller is linked to ACCESS Community Health Network. Dmand AI links Dr. Zeller to 1 more medical group.
Does Dr. William Patrick Zeller accept Medicare?
Yes. CMS data shows Dr. Zeller billed Medicare for 172 services in 2022.
What services does Dr. William Patrick Zeller bill to Medicare?
In 2022, Dr. Zeller's most billed Medicare services were office visit, established patient (99214), medical service (95251) and lab and pathology test (83036).
Where did Dr. William Patrick Zeller go to medical school?
Dr. Zeller graduated from Loyola University of Chicago, Stritch School of Medicine in 1977.
What drugs does Dr. William Patrick Zeller prescribe most?
In 2023 Medicare Part D data, Dr. Zeller's most prescribed drugs by claims were Levothyroxine Sodium, Genotropin and Metformin HCl.
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Has Dr. William Patrick Zeller received payments from drug or device companies?
CMS Open Payments shows $27,839 in general payments to Dr. Zeller from 16 companies from 2016 to 2025. The largest total came from Dexcom, Inc.
How long has Dr. William Patrick Zeller been practicing?
Dr. Zeller graduated from medical school in 1977, 49 years ago.
Does Dr. William Patrick Zeller do research?
Dmand AI links 1 publication to Dr. Zeller.
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