ANDREA PORTOCARRERO CASTILLO M.D.
NPI 1174978852
Internal Medicine - Gastroenterology in Stanford, CA

Q: What is Andrea Portocarrero Castillo's NPI number?

The NPI number for Andrea Portocarrero Castillo is 1174978852. It was assigned to this individual provider in the NPPES registry on April 29, 2016.

Q: What is Andrea Portocarrero Castillo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Active since April 29, 2016PECOS EnrolledAccepts Medicare Assignment

76.5/100

CMS Quality Rating

300 PASTEUR DR, STANFORD, CA 94305(650) 723-4000 Get Directions Write a Review

NPPES record last updated: April 16, 2024. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Apr 16, 2024, Sep 21, 2022, Apr 13, 2022 (3 updates tracked since 2022).

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About Andrea Portocarrero Castillo M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ANDREA PORTOCARRERO CASTILLO M.D. (NPI 1174978852) is an individual gastroenterology provider in Stanford, California, licensed in California (A181751) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with Mission Regional Medical Center, and maintains a secondary practice location in Cincinnati.

NPPES Registry Identity

NPI1174978852

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameANDREA PORTOCARRERO CASTILLOCredential: M.D.

Location Address300 PASTEUR DRStanford, CA 94305-2200

Mailing Address300 Pasteur DrStanford, CA 94305-2200 · (650) 723-4000

Phone(650) 723-4000

Sole ProprietorNo

Medical School CMSOtherGraduated 2014

Enumeration DateApril 29, 2016

Last NPPES UpdateApril 16, 20243 updates tracked since enumeration

NPPES CertifiedApril 16, 2024

✔ NPI 1174978852 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A181751

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License A181751 (CA)

300 PASTEUR DR, Stanford, CA 94305

Open in Google Maps ↗

Other Names 1

Former Name (1)Andrea Portocarrero

Secondary Practice Location 1

Location 1234 Goodman St, ML 0781Cincinnati, OH 45219-2364 · Phone (513) 584-4505 · Fax (513) 584-0468

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Andrea Portocarrero Castillo M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6608156898

PECOS Enrollment IDI20260331000134

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

114 services95 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

90 services90 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

54 services46 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

36 services36 patients

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 G0500

Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.

36 services36 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

32 services32 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

32 services32 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

23 services23 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

23 services23 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

20 services19 patients

Study of rectum sensitivity and function 91122

This procedure examines the rectum's sensitivity and functionality. It involves a small, soft balloon inserted into the rectum and inflated to various degrees. The goal is to assess how well your rectum can sense and respond to different volumes. It's a crucial test for diagnosing certain digestive issues.

12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mission Regional Medical Center

Acute Care Hospitals · Mission, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450176

Location900 South Bryan RoadMission, TX 78572 · Hidalgo County

Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94305 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$121.77 typical visit price

range $23.96 – $169.60

Typical copayment $30.44 (range $5.99 – $42.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.5/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

74.31

Promoting Interoperability

100

Improvement Activities

Cost

43.95

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. PRAVENE A NATH M.D.

Emergency Medicine

300 PASTEUR DR, H3200, M/C 5230
PALO ALTO, CA 94305

Santa Clara County (650) 721-6408

DR. DIANA G MC GREGOR MBBS

Anesthesiology

300 PASTEUR DR
STANFORD, CA 94305

Santa Clara County (650) 723-6411

DR. LISA MAI LEE MD

Obstetrics & Gynecology

300 PASTEUR DR
STANFORD, CA 94305

Santa Clara County (650) 723-4000

JING WANG CHIANG MD

Obstetrics & Gynecology

300 PASTEUR DR
STANFORD, CA 94305

Santa Clara County (650) 723-4000

DR. KEVIN LEE LETZ DNP, NP

Nurse Practitioner

300 PASTEUR DR, SUMC - PEDS PHYSICIAN BILLING MC:5530
PALO ALTO, CA 94305

Santa Clara County (650) 498-7391

STANFORD HOSPITAL AND CLINIC

Anesthesiology

300 PASTEUR DR
STANFORD, CA 94305

Santa Clara County (650) 498-7103

STANFORD HOSPITAL AND CLINICS

Internal Medicine (Endocrinology, Diabetes & Metabolism)

300 PASTEUR DR
STANFORD, CA 94305

Santa Clara County (650) 498-7103

STANFORD HOSPITAL AND CLINCS

Psychiatry & Neurology (Psychiatry)

300 PASTEUR DR
STANFORD, CA 94305

Santa Clara County (650) 498-7103

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Andrea Portocarrero Castillo's NPI number?

The NPI number for Andrea Portocarrero Castillo is 1174978852. It was assigned to this individual provider in the NPPES registry on April 29, 2016.

Where is Andrea Portocarrero Castillo located?

Andrea Portocarrero Castillo practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.

What is Andrea Portocarrero Castillo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Andrea Portocarrero Castillo enrolled in Medicare?

Yes. Andrea Portocarrero Castillo is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Andrea Portocarrero Castillo affiliated with any hospitals?

According to CMS data, Andrea Portocarrero Castillo is affiliated with Mission Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Andrea Portocarrero Castillo was last updated on April 16, 2024. NPI Profile syncs with the weekly NPPES data releases published by CMS.