Physician Profile
Mark Grant Shapiro, MD
Unclaimed ProfileAbout Dr. Shapiro
Mark Grant Shapiro, MD is a healthcare provider in San Diego, CA specializing in internal medicine. Mark trained at Baylor College of Medicine, graduating in 2003. According to Medicare claims data, Mark cared for 543 Medicare patients across 957 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
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (858) 939-3400
- Email not available
Practice Locations
7901 FROST ST
San Diego, CA 92123
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Procedures & services
Most searched procedures
Procedures Most Often Billed to Medicare
957 services · 543 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
706 |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
164 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
74 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
13 |
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 7
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
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 Diego 8
Same specialty, same city.
Trained at Baylor College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2003 at Baylor College of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Shapiro?
Dr. Shapiro is an internal medicine in San Diego, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Shapiro's address?
Dr. Shapiro is listed at 7901 FROST ST, San Diego, CA 92123. 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. Shapiro?
The number on file is (858) 939-3400. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Shapiro's NPI number?
Dr. Shapiro's National Provider Identifier is 1336251446. 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. Shapiro train?
Dr. Shapiro attended Baylor College of Medicine, graduating in 2003. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Shapiro been practicing?
Dr. Shapiro has 23 years experience. Calculated from a graduation year of 2003, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Shapiro perform?
According to Medicare billing data, Dr. Shapiro 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
Has Dr. Shapiro confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Shapiro. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.