Physician Profile
Unclaimed ProfileAbout JACOB
Mark Alan Jacob, M.D. practises internal medicine in San Antonio, TX. Mark is a 1979 graduate of University of Texas Medical Branch at Galveston. Mark is also listed as specialising in cardiovascular disease.
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
Common questions
What does Dr. Jacob specialise in?
Dr. Jacob 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
Where is Dr. Jacob located?
Dr. Jacob is listed at 4330 MEDICAL DR STE 500, San Antonio, TX 78229. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Jacob's phone number?
The number on file is (210) 558-0122. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Jacob?
Dr. Jacob's National Provider Identifier is 1952524399. 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. Jacob go to medical school?
Dr. Jacob attended University of Texas Medical Branch at Galveston, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Jacob have?
Dr. Jacob has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Jacob do most often?
According to Medicare billing data, Dr. Jacob the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Jacob's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Jacob. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (210) 558-0122
- Email not available
Practice Locations
4330 MEDICAL DR STE 500
San Antonio, TX 78229
Procedures Most Often Billed to Medicare
74 services · 62 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
57 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
17 |
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 8
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 — 24 related providers in 3 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 1979 at University of Texas Medical Branch at Galveston 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.