Dr. Allison M. Gerren, MD
- Hospital affiliations
- 1
- Industry payments
- $15
- Medical group
- 1
- State licenses
- 2
- Year NPI issued
- 2021
- Practice address
- 251 E Huron St, Chicago, IL 60611
- Practice phone
- Call (312) 926-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gerren'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. Allison M. Gerren is an OB-GYN in Chicago, Illinois
Dr. Gerren practices at Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare.
Dr. Gerren's NPI, 1336723360, was assigned on May 6, 2021. Dr. Gerren holds Illinois license 036176189.
- NPI
- 1336723360NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709389885
- NPI enumeration date
- May 6, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 926-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Allison M. Gerren practices at Northwestern Memorial Hospital in Chicago, Illinois
Dr. Gerren's primary practice is Northwestern Memorial Hospital, at 251 E Huron St, Chicago, IL 60611 in Cook County. The practice phone is (312) 926-2000.
- Northwestern Memorial Hospital251 E Huron St, Chicago, IL 60611 · Cook CountyPhone(312) 926-2000
Source: Dmand AI Affiliation Data
Dr. Allison M. Gerren is affiliated with 2 sites of care and 1 medical group
Dr. Gerren's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Gerren to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Allison M. Gerren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gerren practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Memorial Hospital | Available with a free account |
| +1 more affiliated site | 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 Northwestern Memorial HealthCare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Allison M. Gerren is one of 1,665 OB-GYNs in Illinois
Obstetrics and gynecology is Dr. Gerren's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dmand AI has Dr. Gerren's licenses on file in 2 states: Illinois and New York.
Specialties and state licenses
- Obstetrics and gynecology, IllinoisPrimary
- Student in an organized health care education/training program, New York
OB-GYNs near Dr. Gerren
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. Allison M. Gerren's patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Gerren's median patient age at 35, with 100% women.
Dr. Gerren'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
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
How Dr. Allison M. Gerren takes part in Medicare
Dr. Gerren 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)
Dr. Allison M. Gerren received $15 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Gerren from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Roche Diagnostics Corporation paid the most, $15.
Companies that paid Dr. Gerren the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Allison M. Gerren'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. Allison M. Gerren
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. Allison M. Gerren's NPI number?
Dr. Allison M. Gerren's NPI number is 1336723360. It was assigned on May 6, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Allison M. Gerren?
Dr. Allison M. Gerren is an OB-GYN in Chicago, Illinois. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Allison M. Gerren practice?
Dr. Gerren practices at 251 E Huron St, Chicago, IL 60611. Dr. Gerren's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Gerren to 1 group practice or clinic.
What is Dr. Allison M. Gerren's office phone number?
The practice phone on file for Dr. Gerren is (312) 926-2000.
What is Dr. Allison M. Gerren's medical license number?
Dr. Gerren holds Illinois license 036176189, one of the licenses on file in 2 states.
Which states has Dr. Allison M. Gerren been licensed in?
Dmand AI has state licenses on file for Dr. Gerren in Illinois and New York.
Which hospitals is Dr. Allison M. Gerren affiliated with?
Dr. Gerren practices at Northwestern Memorial Hospital in Chicago, Illinois.
What medical group is Dr. Allison M. Gerren part of?
Dr. Gerren is linked to Northwestern Medical Faculty Foundation.
Does Dr. Allison M. Gerren accept Medicare?
Yes. CMS lists Dr. Gerren as accepting Medicare assignment.
Has Dr. Allison M. Gerren received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to Dr. Gerren from 1 company from 2025 to 2025. The largest total came from Roche Diagnostics Corporation.
How long has Dr. Allison M. Gerren been practicing?
Dr. Gerren graduated from medical school in 2021, 5 years ago.
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