Doctor profile · Federal record
Dr. Andrea Portocarrero Castillo, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Stanford, CA
- NPI 1174978852
- Accepts Medicare
- MIPS 75.5 / 100 · 2023
- 12 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
300 Pasteur Dr
Stanford, CA 943052200
(650) 723-4000 - Additional location
-
234 Goodman St, Ml 0781
Cincinnati, OH 452192364
(513) 584-4505
fax (513) 584-0468
Credentials & registration
- NPI registered
- April 2016 — 10 yrs on file
- Profile last updated
- April 16, 2024
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A181751
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1174978852. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
466
Distinct HCPCS
10
Medicare allowed
$64,773
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99205 |
New patient office or other outpatient visit, 60-74 minutes | 76 | 76 | $202 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 72 | 56 | $161 | |
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 62 | 61 | $6 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 42 | 27 | $88 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 40 | 40 | $147 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 33 | 32 | $141 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 32 | 17 | $135 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 31 | 31 | $260 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 22 | 21 | $112 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 19 | 19 | $196 |
In context: peer comparison
Among 18 peers in Stanford Gastroenterology Physician, average services per provider: 46. This provider delivers 10× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
216
Patients
132
Total drug cost
$19,200
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 61 | 60 | $1,335 |
| Omeprazole | Generic | 57 | 27 | $1,146 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 30 | 29 | $570 |
| Linzess (Linaclotide) | Brand | 26 | 16 | $15,187 |
| Famotidine | Generic | 16 | 0 | $189 |
| Pantoprazole Sodium | Generic | 15 | 0 | $415 |
| Esomeprazole Magnesium | Generic | 11 | 0 | $358 |
Hospital affiliations
Frequently asked questions
What is Dr. Andrea Portocarrero Castillo's medical specialty?
Dr. Andrea Portocarrero Castillo practices Gastroenterology Physician in Stanford, CA.
Where does Dr. Andrea Portocarrero Castillo practice?
Dr. Andrea Portocarrero Castillo practices at 300 Pasteur Dr, Stanford, CA 943052200. Office phone: 6507234000.
What is Dr. Andrea Portocarrero Castillo's NPI?
Dr. Andrea Portocarrero Castillo's National Provider Identifier (NPI) is 1174978852, issued by NPPES.
Does Dr. Andrea Portocarrero Castillo accept Medicare assignment?
Yes. Dr. Andrea Portocarrero Castillo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Andrea Portocarrero Castillo commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99205); Established patient office or other outpatient visit (HCPCS 99215); Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500). Source: CMS Medicare Physician & Other Practitioners file.