Dr. Neilsen Franklin Little, MD
- Part D claims, 2024
- 15
- Hospital affiliations
- 1
- Industry payments
- $25
- State license
- 1
- Year NPI issued
- 2024
- Practice address
- 15th Street at California, Chicago, IL 60608
- Practice phone
- Call (773) 542-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Little'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. Neilsen Franklin Little is an internist in Chicago, Illinois
Dr. Little practices at Mount Sinai Hospital in Chicago, Illinois, part of Sinai Health System.
Dr. Little's NPI, 1952144461, was assigned on June 13, 2024. Dr. Little holds Illinois license 125084774.
- NPI
- 1952144461NPI Registry (opens in a new tab)
- NPI enumeration date
- June 13, 2024
- NPI status
- Active
- Practice phone
- (773) 542-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Neilsen Franklin Little practices at 2 locations in Chicago, Illinois
Dr. Little's primary practice is Mount Sinai Hospital, at 15th Street at California, Chicago, IL 60608 in Cook County. The practice phone is (773) 542-2000. Dr. Little also practices at Mount Sinai Hospital Medical Center, 1500 S Fairfield Ave, Chicago, IL 60608.
- Mount Sinai HospitalPrimary15th Street at California, Chicago, IL 60608 · Cook CountyPhone(773) 542-2000
- Mount Sinai Hospital Medical Center1500 S Fairfield Ave, Chicago, IL 60608 · Cook CountyPhone(772) 257-6642
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Neilsen Franklin Little is affiliated with 2 sites of care
Dr. Little's primary practice is Mount Sinai Hospital in Chicago, Illinois, part of Sinai Health System. Dmand AI also links Dr. Little to 1 breast imaging center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Neilsen Franklin Little's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Little practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mount Sinai Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Sinai Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Neilsen Franklin Little is one of 5,652 internists in Illinois
Internal medicine is Dr. Little's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Little is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Little
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. Neilsen Franklin Little's patients have a median age of 54
Across all payers, Dmand AI patient panel data puts Dr. Little's median patient age at 54, with 57% women.
Dr. Little's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women57%
- Men43%
Source: Dmand AI Patient Panel Data
Dr. Neilsen Franklin Little wrote 15 Medicare Part D claims in 2024
In 2024, Dr. Little wrote 15 Medicare Part D claims. 87% of them were for generic drugs.
Dr. Little's Part D claims by kind of drug, 2024
- Generic13 claims87%
- Brand-name and other2 claims13%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Neilsen Franklin Little received $25 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Little from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Travere Therapeutics, Inc. paid the most, $25.
Companies that paid Dr. Little 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. Neilsen Franklin Little'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 Affiliation DataDmand AI Practice 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 |
| Part D prescribing | 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. Neilsen Franklin Little
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. Neilsen Franklin Little's NPI number?
Dr. Neilsen Franklin Little's NPI number is 1952144461. It was assigned on June 13, 2024, and it is active in the NPI Registry.
What kind of doctor is Dr. Neilsen Franklin Little?
Dr. Neilsen Franklin Little is an internist in Chicago, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Neilsen Franklin Little practice?
Dr. Little practices at 15th Street at California, Chicago, IL 60608. Dr. Little also practices at 1500 S Fairfield Ave, Chicago, IL 60608. Dr. Little's primary practice is Mount Sinai Hospital in Chicago, Illinois, part of Sinai Health System. Dmand AI also links Dr. Little to 1 breast imaging center.
What is Dr. Neilsen Franklin Little's office phone number?
The practice phone on file for Dr. Little is (773) 542-2000.
What is Dr. Neilsen Franklin Little's medical license number?
Dr. Little holds Illinois license 125084774.
Which hospitals is Dr. Neilsen Franklin Little affiliated with?
Dr. Little practices at Mount Sinai Hospital in Chicago, Illinois.
Has Dr. Neilsen Franklin Little received payments from drug or device companies?
CMS Open Payments shows $25 in general payments to Dr. Little from 1 company from 2025 to 2025. The largest total came from Travere Therapeutics, Inc.
How long has Dr. Neilsen Franklin Little been practicing?
Dr. Little's NPI was assigned in 2024.
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