Dr. Hillary E. McLaren, MD
- Medicare patients, 2024
- 19
- Part D claims, 2024
- 26
- Hospital affiliations
- 1
- Industry payments
- $76
- Medical groups
- 2
- Practice address
- 5841 S Maryland Ave, Chicago, IL 60637
- Practice phone
- Call (773) 702-1530
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The University of Chicago Medical Center
Chicago, Illinois
Find Dr. McLaren'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. Hillary E. McLaren is an OB-GYN in Chicago, Illinois
Dr. McLaren practices at The University of Chicago Medical Center in Chicago, Illinois.
Dr. McLaren's NPI, 1831545482, was assigned on May 12, 2016. Dr. McLaren graduated from Medical College of Wisconsin in 2016. Dr. McLaren holds Illinois license 036.151690.
- NPI
- 1831545482NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648566190
- NPI enumeration date
- May 12, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 702-1530
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hillary E. McLaren practices at The University of Chicago Medical Center in Chicago, Illinois
Dr. McLaren's primary practice is The University of Chicago Medical Center, at 5841 S Maryland Ave, Chicago, IL 60637 in Cook County. The practice phone is (773) 702-1530.
- The University of Chicago Medical Center5841 S Maryland Ave, Chicago, IL 60637 · Cook CountyPhone(773) 702-1530
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Hillary E. McLaren is affiliated with 2 sites of care and 2 medical groups
Dr. McLaren's primary practice is The University of Chicago Medical Center in Chicago, Illinois. Dr. McLaren is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians. Dmand AI also links Dr. McLaren to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Hillary E. McLaren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McLaren practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The University of Chicago Medical Center | 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. Hillary E. McLaren is one of 1,665 OB-GYNs in Illinois
Obstetrics and gynecology is Dr. McLaren's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. McLaren is licensed in Illinois.
Specialties and state licenses
- Obstetrics and gynecology, IllinoisPrimary
OB-GYNs near Dr. McLaren
Counts of OB-GYNs 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. Hillary E. McLaren treated 19 Medicare patients in 2024, average age 57
CMS counts 19 Medicare patients who saw Dr. McLaren in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 1.76, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. McLaren's median patient age at 35, with 97% women.
Dr. McLaren's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. McLaren's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women97%
- Men1%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hillary E. McLaren wrote 26 Medicare Part D claims in 2024
In 2024, Dr. McLaren wrote 26 Medicare Part D claims for 13 patients. 100% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $74 in total drug cost. In 2017, CMS named 15 claims across 1 drug.
Dr. McLaren's most prescribed drugs by claims, 2019
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, 2017 to 2019
- 2017
- 2019
- Claims for drugs CMS names
- 2017: 152019: 1127%
Drugs named by CMS: 1 in 2019, 1 in 2017.
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
How Dr. Hillary E. McLaren takes part in Medicare
Dr. McLaren accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Hillary E. McLaren received $76 in industry payments from 2018 to 2023
CMS Open Payments shows 3 general payments to Dr. McLaren from 3 drug and device companies from 2018 to 2023. Food and beverage make up the largest share, 60% of the total. Medicines360 paid the most, $30.
General payments to Dr. McLaren by program year, 2018 to 2023
General payments to Dr. McLaren by kind, 2018 to 2023
- Food and beverage$4660%
- Consulting fees$3040%
Companies that paid Dr. McLaren the most, 2018 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Hillary E. McLaren graduated from Medical College of Wisconsin
Dr. McLaren graduated from Medical College of Wisconsin in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Hillary E. McLaren'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 DataDmand AI Org Hierarchy Data |
| 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) |
| 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. Hillary E. McLaren
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. Hillary E. McLaren's NPI number?
Dr. Hillary E. McLaren's NPI number is 1831545482. It was assigned on May 12, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Hillary E. McLaren?
Dr. Hillary E. McLaren is an OB-GYN in Chicago, Illinois. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Hillary E. McLaren practice?
Dr. McLaren practices at 5841 S Maryland Ave, Chicago, IL 60637. Dr. McLaren's primary practice is The University of Chicago Medical Center in Chicago, Illinois. Dmand AI also links Dr. McLaren to 1 medical group.
What is Dr. Hillary E. McLaren's office phone number?
The practice phone on file for Dr. McLaren is (773) 702-1530.
What is Dr. Hillary E. McLaren's medical license number?
Dr. McLaren holds Illinois license 036.151690.
Which hospitals is Dr. Hillary E. McLaren affiliated with?
Dr. McLaren is affiliated with University of Chicago Medical Center.
What medical group is Dr. Hillary E. McLaren part of?
Dr. McLaren is linked to UChicago Medicine Physicians. Dmand AI links Dr. McLaren to 1 more medical group.
Does Dr. Hillary E. McLaren accept Medicare?
Yes. CMS lists Dr. McLaren as accepting Medicare assignment.
How many Medicare patients does Dr. Hillary E. McLaren see?
CMS counts 19 Medicare patients who saw Dr. McLaren in 2024, with an average age of 57.
Where did Dr. Hillary E. McLaren go to medical school?
Dr. McLaren graduated from Medical College of Wisconsin in 2016.
Show 3 more questionsShow fewer questions
What drugs does Dr. Hillary E. McLaren prescribe most?
In 2019 Medicare Part D data, Dr. McLaren's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Hillary E. McLaren received payments from drug or device companies?
CMS Open Payments shows $76 in general payments to Dr. McLaren from 3 companies from 2018 to 2023. The largest total came from Medicines360.
How long has Dr. Hillary E. McLaren been practicing?
Dr. McLaren graduated from medical school in 2016, 10 years ago.
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