Andrea Portocarrero Castillo, M.D.
NPI 1174978852 · Gastroenterology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrea Portocarrero Castillo, M.D. is a Gastroenterology Physician provider in Stanford, CA (NPI 1174978852).
Provider details
- NPI number
- 1174978852
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A181751 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
487 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 114 | $190 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 90 | $226 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 54 | $140 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 36 | $126 |
| 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 MonitoG0500 | 36 | $6 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Linaclotidebrand: Linzess | 170 | 54 |
| Omeprazole | 82 | 31 |
| Famotidine | 60 | 24 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 47 | 45 |
| Pantoprazole Sodium | 40 | 14 |
| Esomeprazole Magnesium | 34 | 15 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 34 |
Practice location
Mailing address
Additional practice locations (1)
- 234 Goodman StMl 0781Cincinnati, OH 45219-2364Phone: (513) 584-4505Fax: (513) 584-0468
Registry dates
- Enumerated
- 2016-04-29
- Last updated
- 2024-04-16
- Certified
- 2024-04-16
Frequently asked questions
- What is Andrea Portocarrero Castillo's NPI number?
- Andrea Portocarrero Castillo's National Provider Identifier (NPI) is 1174978852, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrea Portocarrero Castillo's specialty?
- Andrea Portocarrero Castillo is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Andrea Portocarrero Castillo located?
- Andrea Portocarrero Castillo's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Andrea Portocarrero Castillo's phone number?
- The practice phone number listed in the NPPES registry for Andrea Portocarrero Castillo is (650) 723-4000.
- Does Andrea Portocarrero Castillo accept Medicare?
- Andrea Portocarrero Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrea Portocarrero Castillo's NPI active?
- Yes — Andrea Portocarrero Castillo's NPI (1174978852) is active in the NPPES registry as of the last update on 2024-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.