Dr. Ryan Fields, MD
- Hospital affiliations
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2018
- Practice address
- 2323 N Lake Dr, Milwaukee, WI 53211
- Practice phone
- Call (414) 585-1374
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Fields' 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. Ryan Fields is an internist in Milwaukee, Wisconsin
Dr. Fields practices at Ascension Columbia St. Mary's Hospital - Milwaukee Campus in Milwaukee, Wisconsin, part of Ascension Health Alliance.
Dr. Fields' NPI, 1679070312, was assigned on April 10, 2018. Dr. Fields holds Wisconsin license 86150.
- NPI
- 1679070312NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284965765
- NPI enumeration date
- April 10, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (414) 585-1374
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan Fields practices at Ascension Columbia St. Mary's Hospital - Milwaukee Campus in Milwaukee, Wisconsin
Dr. Fields' primary practice is Ascension Columbia St. Mary's Hospital - Milwaukee Campus, at 2323 N Lake Dr, Milwaukee, WI 53211 in Milwaukee County. The practice phone is (414) 585-1374.
- Ascension Columbia St. Mary's Hospital - Milwaukee Campus2323 N Lake Dr, Milwaukee, WI 53211 · Milwaukee CountyPhone(414) 585-1374
Source: Dmand AI Affiliation Data
Dr. Ryan Fields is affiliated with 3 sites of care and 2 medical groups
Dr. Fields' primary practice is Ascension Columbia St. Mary's Hospital - Milwaukee Campus in Milwaukee, Wisconsin, part of Ascension Health Alliance. The medical group on file is Ascension Medical Group. Dmand AI also links Dr. Fields to 1 more behavioral health center, 1 clinical lab and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ryan Fields' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fields practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension Columbia St. Mary's Hospital - Milwaukee Campus | Available with a free account |
| +2 more sites and 1 medical group | 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 Ascension Health Alliance and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ryan Fields is one of 1,675 internists in Wisconsin
Internal medicine is Dr. Fields' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Fields is licensed in Wisconsin.
Specialties and state licenses
- Internal medicine, WisconsinPrimary
Internists near Dr. Fields
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. Ryan Fields' patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Fields' median patient age at 67, with 52% women.
Dr. Fields' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women52%
- Men48%
Source: Dmand AI Patient Panel Data
How Dr. Ryan Fields takes part in Medicare
Dr. Fields 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)
Sources for Dr. Ryan Fields'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) |
| 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. Ryan Fields
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. Ryan Fields' NPI number?
Dr. Ryan Fields' NPI number is 1679070312. It was assigned on April 10, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan Fields?
Dr. Ryan Fields is an internist in Milwaukee, Wisconsin. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ryan Fields practice?
Dr. Fields practices at 2323 N Lake Dr, Milwaukee, WI 53211. Dr. Fields' primary practice is Ascension Columbia St. Mary's Hospital - Milwaukee Campus in Milwaukee, Wisconsin, part of Ascension Health Alliance. Dmand AI also links Dr. Fields to 1 behavioral health center, 1 clinical lab and 1 medical group.
What is Dr. Ryan Fields' office phone number?
The practice phone on file for Dr. Fields is (414) 585-1374.
What is Dr. Ryan Fields' medical license number?
Dr. Fields holds Wisconsin license 86150.
Which hospitals is Dr. Ryan Fields affiliated with?
Dr. Fields practices at Ascension Columbia St. Mary's Hospital - Milwaukee Campus in Milwaukee, Wisconsin.
What medical group is Dr. Ryan Fields part of?
Dr. Fields is linked to Ascension Medical Group. Dmand AI links Dr. Fields to 1 more medical group.
Does Dr. Ryan Fields accept Medicare?
Yes. CMS lists Dr. Fields as accepting Medicare assignment.
How long has Dr. Ryan Fields been practicing?
Dr. Fields graduated from medical school in 2016, 10 years ago.
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