John Warren
Internal Medicine Physician · Tuscaloosa, AL
John Warren is an internal medicine physician with a practice address in Tuscaloosa, Alabama, and NPI 1013120104, issued on May 7, 2007. Check the license (Alabama MD.27877, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John Warren
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD.27877 AL
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Ruby Tyler Pkwy, Tuscaloosa, AL 35404
- Phone
- (205) 759-2582
- Enumerated
- May 7, 2007
- Record last updated
- Mar 5, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (205) 759-2985
- Medicaid ID
- 1013120104 AL
- Medicare enrollment
- Enrolled (PECOS I20080422000212); accepts Medicare assignment
- Medical or professional school
- University Of Alabama School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,705 in Alabama → Look up another NPI →
Also registered at 1100 Ruby Tyler Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Fulgham, M.D.Internal Medicine Physician1881785749
- Ramie Grace, CRNPFamily Nurse Practitioner1689407736
- Tracy Gunter, CRNPFamily Nurse Practitioner1114095734
- Angela Herndon, CRNPFamily Nurse Practitioner1316327638
- Leonard Jones, M.D.Internal Medicine Physician1366533218
- George Miller, M.D.Internal Medicine Physician1912008491
Verify John Warren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license MD.27877Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9.5 times the Medicare Part D claims of the average internal medicine physician in 2024
30,187 Medicare Part D claims for 1,220 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 851 claims were for opioids.
Most prescribed
- Levothyroxine Sodium1,212 claims
- Amlodipine Besylate1,114 claims
- Atorvastatin Calcium920 claims
- Gabapentin794 claims
- Losartan Potassium749 claims
- Pantoprazole Sodium692 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Tuskaloosa Internal Medicine LLCTuscaloosa, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Warren among 1,705 internal medicine physician records in Alabama
John Warren is one of 1,705 internal medicine physician records with a practice address in Alabama. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 42% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2008 · median 2003 among the 1,136 with a school on file
- Record last updated2013 · 55% 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 Alabama practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
53 internal medicine physician records list a practice address in Tuscaloosa
They are 53 of the 2,313 NPPES records with a practice address in Tuscaloosa, and 1,705 internal medicine physician records in Alabama.
All 1,705 in Alabama → Every provider in Tuscaloosa → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ademola Abdulrauf, MDTuscaloosa, AL 354041669441846
- William Brooke, MEDICAL DOCTORTuscaloosa, AL 354041477541548
- Eric Cunningham, DOTuscaloosa, AL 354041033209473
- Scott Fulgham, M.D.Tuscaloosa, AL 354041881785749
- Leonard Jones, M.D.Tuscaloosa, AL 354041366533218
- George Miller, M.D.Tuscaloosa, AL 354041912008491
- John Miller, M.D.Tuscaloosa, AL 354041104087469
- Lorenza Royal, M.D.Tuscaloosa, AL 354041750358289
Common questions
What is John Warren's NPI number?
John Warren's National Provider Identifier (NPI) is 1013120104, issued on May 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Warren located?
The NPPES record lists a practice address at 1100 Ruby Tyler Pkwy, Tuscaloosa, AL, 35404. Phone: (205) 759-2582. Providers update this record themselves, so call before visiting.
How can I verify John Warren's license?
NPPES lists Alabama license number MD.27877, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Warren prescribe under Medicare Part D?
In 2024, John Warren had 30,187 Medicare Part D claims for 1,220 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.