Physician Profile
Unclaimed ProfileAbout WARREN
Based in Tuscaloosa, AL, John Warren is listed in the NPI registry under internal medicine. John graduated from University of Alabama School of Medicine in 2008. According to Medicare claims data, John cared for 6,017 Medicare patients across 24,036 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (205) 759-2582
- Email not available
Practice Locations
1100 RUBY TYLER PKWY
Tuscaloosa, AL 35404
Procedures Most Often Billed to Medicare
24,036 services · 6,017 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
1,413 |
| X-ray of chest, 2 views | Imaging | 71046 |
293 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
194 |
| Injection, testosterone cypionate, 1 mg | Drug given | J1071 |
11,800 |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
1,022 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
910 |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
889 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
783 |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
773 |
| Blood test, thyroid stimulating hormone (tsh) | Lab test | 84443 |
700 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 6
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 1
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other internal medicines in Tuscaloosa 8
Same specialty, same city.
Trained at University of Alabama School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at University of Alabama School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in AL who bill this service to Medicare most often.
Common questions
What does Dr. Warren specialize in?
Dr. Warren is an internal medicine in Tuscaloosa, AL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Warren located?
Dr. Warren is listed at 1100 RUBY TYLER PKWY, Tuscaloosa, AL 35404. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Warren's phone number?
The number on file is (205) 759-2582. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Warren's NPI number?
Dr. Warren's National Provider Identifier is 1013120104. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Warren go to medical school?
Dr. Warren attended University of Alabama School of Medicine, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Warren been practicing?
Dr. Warren has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Warren do most often?
According to Medicare billing data, Dr. Warren performs procedures including insertion of needle into vein for collection of blood sample; reads or performs imaging such as x-ray of chest, 2 views; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Warren confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Warren. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.