James B. Warren, MD
Internal Medicine Physician · Saint Paul, MN
James B. Warren, MD is an internal medicine physician with a practice address in Saint Paul, Minnesota, and NPI 1639145543, issued on Feb 28, 2006. Check the license (Minnesota 25214, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- James B. Warren
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25214 MN
Self-reported in NPPES; status is on the state search - Practice location
- 2635 University Ave W Ste 160, Saint Paul, MN 55114
- Phone
- (654) 254-5800
- Enumerated
- Feb 28, 2006
- Record last updated
- Aug 15, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicaid ID
- 332303000 MN
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,632 in Minnesota → Look up another NPI →
Also registered at 2635 University Ave W Ste 160
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Allison Coindreau, RN, CNM, MSNurse Practitioner1649593310
- Catherine Crowley, CNMAdvanced Practice Midwife1295700185
- Sarah D'Heilly, M.D.Internal Medicine Physician1306873369
- Shireen Desamlazaro, M.D.Obstetrics & Gynecology Physician1255621850
- Ann Dohrmann, CNMAdvanced Practice Midwife1417924432
- Kelly Frisch, MDInternal Medicine Physician1679547624
Verify James B. Warren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 25214Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $23.31
1 payment: food and beverage; the largest payer was Hologic Sales and Service, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
James B. Warren among 2,632 internal medicine physician records in Minnesota
James B. Warren, MD is one of 2,632 internal medicine physician records with a practice address in Minnesota. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2018 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
254 internal medicine physician records list a practice address in Saint Paul
They are 254 of the 10,084 NPPES records with a practice address in Saint Paul, and 2,632 internal medicine physician records in Minnesota.
All 2,632 in Minnesota → Every provider in Saint Paul → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shannon Canas, MDSaint Paul, MN 551141619903093
- Sarah D'Heilly, M.D.Saint Paul, MN 551141306873369
- Geeta Dash, MDSt Paul, MN 551141508828484
- Josaleen Davis, MDSt Paul, MN 551141023217742
- Kelly Frisch, MDSaint Paul, MN 551141679547624
- Sarah Mazig, M.D.St Paul, MN 551141194754853
- Angela Medina, MDSaint Paul, MN 551141710953864
- Frederick Mosch, MDSaint Paul, MN 551141154403764
Common questions
What is James B. Warren, MD's NPI number?
James B. Warren, MD's National Provider Identifier (NPI) is 1639145543, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James B. Warren, MD located?
The NPPES record lists a practice address at 2635 University Ave W Ste 160, Saint Paul, MN, 55114. Phone: (654) 254-5800. Providers update this record themselves, so call before visiting.
How can I verify James B. Warren, MD's license?
NPPES lists Minnesota license number 25214, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.