Dr. Monica M. O'Sullivan, MD
- Medicare services, 2023
- 656
- Part D claims, 2024
- 2,373
- Industry payments
- $152
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- N74w12501 Leatherwood Ct, Menomonee Falls, WI 53051
- Practice phone
- Call (262) 255-2500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Froedtert Greenfield Highlands Health Center
Menomonee Falls, Wisconsin
Find Dr. O'Sullivan'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. Monica M. O'Sullivan is an internist in Menomonee Falls, Wisconsin
Dr. O'Sullivan practices at Froedtert Greenfield Highlands Health Center in Menomonee Falls, Wisconsin.
Dr. O'Sullivan's NPI, 1043262546, was assigned on May 16, 2006. Dr. O'Sullivan graduated from Medical College of Wisconsin in 1999. Dr. O'Sullivan holds Wisconsin license 44298.
- NPI
- 1043262546NPI Registry (opens in a new tab)
- NPI enumeration date
- May 16, 2006
- NPI status
- Active
- Practice phone
- (262) 255-2500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Monica M. O'Sullivan practices at Froedtert Greenfield Highlands Health Center in Menomonee Falls, Wisconsin
Dr. O'Sullivan's primary practice is Froedtert Greenfield Highlands Health Center, at N74w12501 Leatherwood Ct, Menomonee Falls, WI 53051 in Waukesha County. The practice phone is (262) 255-2500.
- Froedtert Greenfield Highlands Health CenterN74w12501 Leatherwood Ct, Menomonee Falls, WI 53051 · Waukesha CountyPhone(262) 255-2500
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Monica M. O'Sullivan is affiliated with 3 sites of care and 2 medical groups
Dr. O'Sullivan's primary practice is Froedtert Greenfield Highlands Health Center in Menomonee Falls, Wisconsin. The medical group on file is Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI also links Dr. O'Sullivan to 2 more group practices and clinics 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. Monica M. O'Sullivan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Sullivan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Froedtert Greenfield Highlands Health Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Monica M. O'Sullivan is one of 1,675 internists in Wisconsin
Internal medicine is Dr. O'Sullivan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. O'Sullivan is licensed in Wisconsin.
Specialties and state licenses
- Internal medicine, WisconsinPrimary
Internists near Dr. O'Sullivan
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. Monica M. O'Sullivan billed Medicare for 656 services in 2023
CMS data shows 656 Medicare services from Dr. O'Sullivan across 7 procedure codes in 2023. Medicare paid $66,151 for them. Every service was in an office.
Dr. O'Sullivan's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 4322023: 4037%
- Other services
- 2022: 2822023: 23317%
- Tests and treatments
- 2022: 432023: 2053%
Dr. O'Sullivan compared with the Wisconsin median for internists, 2023
- Dr. O'Sullivan
- Wisconsin median
- Medicare services
- 656vs 45744% above
- Part D claims
- 1,889vs 4334.4 times
Medians across 1,658 internists in Wisconsin with Dmand AI profiles that report each measure.
Dr. O'Sullivan's most billed Medicare procedure codes, 2023
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. O'Sullivan and other internists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Monica M. O'Sullivan's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. O'Sullivan's median patient age at 72, with 78% women.
Dr. O'Sullivan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women78%
- Men22%
Source: Dmand AI Patient Panel Data
Dr. Monica M. O'Sullivan wrote 2,373 Medicare Part D claims in 2024
In 2024, Dr. O'Sullivan wrote 2,373 Medicare Part D claims for 425 patients. 88% of them were for generic drugs. CMS names the drug for 1,889 of them, across 49 drugs with 11 or more claims each, at $85,609 in total drug cost. In 2023, CMS named 6,740 claims across 117 drugs.
Dr. O'Sullivan's Part D claims by kind of drug, 2024
- Generic2,099 claims88%
- Brand-name255 claims11%
- Other19 claims1%
Dr. O'Sullivan'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. O'Sullivan's Part D claims, 2024
- Opioids1%19 of 2,373 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: 6,7402024: 1,88972%
Drugs named by CMS: 49 in 2024, 117 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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Dr. Monica M. O'Sullivan received $152 in industry payments from 2017 to 2025
CMS Open Payments shows 3 general payments to Dr. O'Sullivan from 2 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $122.
General payments to Dr. O'Sullivan by program year, 2017 to 2025
Companies that paid Dr. O'Sullivan the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Monica M. O'Sullivan graduated from Medical College of Wisconsin
Dr. O'Sullivan graduated from Medical College of Wisconsin in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Monica M. O'Sullivan'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) |
| 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. Monica M. O'Sullivan
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. Monica M. O'Sullivan's NPI number?
Dr. Monica M. O'Sullivan's NPI number is 1043262546. It was assigned on May 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Monica M. O'Sullivan?
Dr. Monica M. O'Sullivan is an internist in Menomonee Falls, Wisconsin. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Monica M. O'Sullivan practice?
Dr. O'Sullivan practices at N74w12501 Leatherwood Ct, Menomonee Falls, WI 53051. Dr. O'Sullivan's primary practice is Froedtert Greenfield Highlands Health Center in Menomonee Falls, Wisconsin. Dmand AI also links Dr. O'Sullivan to 2 group practices and clinics and 1 medical group.
What is Dr. Monica M. O'Sullivan's office phone number?
The practice phone on file for Dr. O'Sullivan is (262) 255-2500.
What is Dr. Monica M. O'Sullivan's medical license number?
Dr. O'Sullivan holds Wisconsin license 44298.
What medical group is Dr. Monica M. O'Sullivan part of?
Dr. O'Sullivan is linked to Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI links Dr. O'Sullivan to 1 more medical group.
Does Dr. Monica M. O'Sullivan accept Medicare?
Yes. CMS data shows Dr. O'Sullivan billed Medicare for 656 services in 2023.
What services does Dr. Monica M. O'Sullivan bill to Medicare?
In 2023, Dr. O'Sullivan's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
Where did Dr. Monica M. O'Sullivan go to medical school?
Dr. O'Sullivan graduated from Medical College of Wisconsin in 1999.
What drugs does Dr. Monica M. O'Sullivan prescribe most?
In 2024 Medicare Part D data, Dr. O'Sullivan's most prescribed drugs by claims were Rosuvastatin Calcium, Atorvastatin Calcium and Amlodipine Besylate.
Has Dr. Monica M. O'Sullivan received payments from drug or device companies?
CMS Open Payments shows $152 in general payments to Dr. O'Sullivan from 2 companies from 2017 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Monica M. O'Sullivan been practicing?
Dr. O'Sullivan graduated from medical school in 1999, 27 years ago.
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