Physician Profile
Unclaimed ProfileAbout MCCARROLL
Gregory Duncan McCarroll, M.D. practices internal medicine in San Antonio, TX. Gregory is a 1983 graduate of University of Texas Medical Branch at Galveston. According to Medicare claims data, Gregory cared for 615 Medicare patients across 1,026 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
- (210) 614-7840
- Email not available
Practice Locations
7622 LOUIS PASTEUR DR STE. 100
San Antonio, TX 78229
Procedures Most Often Billed to Medicare
1,026 services · 615 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
378 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
21 |
| Influenza vaccine, trivalent derived from cell cultures | Treatment | 90661 |
21 |
| Administration of vaccine | Treatment | 90471 |
15 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
499 |
| Administration of influenza virus vaccine | Billing code | G0008 |
25 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
21 |
| Automated urinalysis test | Lab test | 81003 |
17 |
| Administration of pneumococcal vaccine | Billing code | G0009 |
15 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
14 |
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 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
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 San Antonio 8
Same specialty, same city.
Trained at University of Texas Medical Branch at Galveston 8
Other providers in the same specialty who trained at the same institution.
Class of 1983 at University of Texas Medical Branch at Galveston 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 TX who bill this service to Medicare most often.
- Quest Diagnostics Clinical Laboratories INC
- Clinical Pathology Laboratories, INC.
- Quest Diagnostics Clinical Laboratories INC
- Laboratory Corporation of America
- Laboratory Corporation of America
- Lone Star Pathology PLLC
- Medical Clinic of Houston, LLP
- The University of Texas Southwestern Medical Center at Dallas
Common questions
What kind of doctor is Dr. McCarroll?
Dr. McCarroll is an internal medicine in San Antonio, TX. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. McCarroll's address?
Dr. McCarroll is listed at 7622 LOUIS PASTEUR DR STE. 100, San Antonio, TX 78229. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. McCarroll?
The number on file is (210) 614-7840. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. McCarroll's NPI number?
Dr. McCarroll's National Provider Identifier is 1255422614. 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. McCarroll train?
Dr. McCarroll attended University of Texas Medical Branch at Galveston, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. McCarroll been practicing?
Dr. McCarroll has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. McCarroll perform?
According to Medicare billing data, Dr. McCarroll performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as pneumococcal conjugate vaccine, 20 valent , for intramuscular use and influenza vaccine, trivalent derived from cell cultures, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. McCarroll confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. McCarroll. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.