Dr. Spencer Mossack, MD
- Part D claims, 2024
- 50
- Industry payments
- $3,076
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2020
- Practice address
- 520 S Maple Ave, Oak Park, IL 60304
- Practice phone
- Call (312) 942-7100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Medical group
Find Dr. Mossack'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. Spencer Mossack is a urologist in Oak Park, Illinois
Dr. Mossack practices with UroPartners, a medical group.
Dr. Mossack's NPI, 1265061980, was assigned on April 4, 2020. Dr. Mossack holds Illinois license 1265061980.
- NPI
- 1265061980NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284037235
- NPI enumeration date
- April 4, 2020
- NPI status
- Active
- Practice phone
- (312) 942-7100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Spencer Mossack's practice address is in Oak Park, Illinois
Dr. Mossack's practice address in the NPI Registry is 520 S Maple Ave, Oak Park, IL 60304, in Cook County. The practice phone is (312) 942-7100.
- NPI Registry address520 S Maple Ave, Oak Park, IL 60304 · Cook CountyPhone(312) 942-7100
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Spencer Mossack is affiliated with 1 medical group
Dr. Mossack is part of UroPartners, a medical group in Westchester, Illinois.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Spencer Mossack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mossack practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UroPartners | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Spencer Mossack is one of 513 urologists in Illinois
Urology is Dr. Mossack's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Mossack is licensed in Illinois.
Specialties and state licenses
- Urology, IllinoisPrimary
Urologists near Dr. Mossack
Counts of urologists 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. Spencer Mossack's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Mossack's median patient age at 73, with 86% women.
Dr. Mossack's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women86%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Spencer Mossack wrote 50 Medicare Part D claims in 2024
In 2024, Dr. Mossack wrote 50 Medicare Part D claims for 31 patients. 100% of them were for generic drugs. CMS names the drug for 29 of them, across 2 drugs with 11 or more claims each, at $60 in total drug cost. In 2023, CMS named 76 claims across 4 drugs.
Dr. Mossack'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. Mossack's Part D claims, 2024
- Opioids36%18 of 50 claims
- Antibiotics32%16 of 50 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: 762024: 2962%
Drugs named by CMS: 2 in 2024, 4 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
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Spencer Mossack received $3,076 in industry payments from 2022 to 2025
CMS Open Payments shows 61 general payments to Dr. Mossack from 13 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $929.
General payments to Dr. Mossack by program year, 2022 to 2025
Companies that paid Dr. Mossack the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Spencer Mossack'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 | Dmand AI Affiliation Data |
| 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) |
| 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. Spencer Mossack
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. Spencer Mossack's NPI number?
Dr. Spencer Mossack's NPI number is 1265061980. It was assigned on April 4, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Spencer Mossack?
Dr. Spencer Mossack is a urologist in Oak Park, Illinois. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Spencer Mossack practice?
Dr. Mossack practices at 520 S Maple Ave, Oak Park, IL 60304. Dr. Mossack's primary practice is UroPartners, a medical group.
What is Dr. Spencer Mossack's office phone number?
The practice phone on file for Dr. Mossack is (312) 942-7100.
What is Dr. Spencer Mossack's medical license number?
Dr. Mossack holds Illinois license 1265061980.
What medical group is Dr. Spencer Mossack part of?
Dr. Mossack is part of UroPartners in Westchester, Illinois.
What drugs does Dr. Spencer Mossack prescribe most?
In 2024 Medicare Part D data, Dr. Mossack's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Sulfamethoxazole-Trimethoprim.
Has Dr. Spencer Mossack received payments from drug or device companies?
CMS Open Payments shows $3,076 in general payments to Dr. Mossack from 13 companies from 2022 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Spencer Mossack been practicing?
Dr. Mossack's NPI was assigned in 2020.
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