Dr. Andrea Portocarrero Castillo, MD
- Medicare services, 2024
- 487
- Medicare patients, 2024
- 326
- Part D claims, 2024
- 637
- MIPS score, 2024
- 89
- Hospital affiliations
- 3
- Practice address
- 300 Pasteur Drive, Stanford, CA 94305
- Practice phone
- Call (650) 723-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Portocarrero Castillo's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Andrea Portocarrero Castillo is a gastroenterologist in Stanford, California
Dr. Portocarrero Castillo practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Portocarrero Castillo's NPI, 1174978852, was assigned on April 29, 2016. Dr. Portocarrero Castillo graduated from Cayetano Heredia University in 2013. Dr. Portocarrero Castillo holds California license A181751.
- NPI
- 1174978852NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608156898
- NPI enumeration date
- April 29, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Andrea Portocarrero Castillo practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Portocarrero Castillo's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.
- Stanford Hospital at 300 Pasteur Drive300 Pasteur Drive, Stanford, CA 94305 · Santa Clara CountyPhone(650) 723-4000
Source: Dmand AI Affiliation Data
Dr. Andrea Portocarrero Castillo is affiliated with 4 sites of care and 2 medical groups
Dr. Portocarrero Castillo's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dr. Portocarrero Castillo is also affiliated with Mission Regional Medical Center. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Portocarrero Castillo to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account. Dr. Portocarrero Castillo's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Andrea Portocarrero Castillo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Portocarrero Castillo practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stanford Hospital at 300 Pasteur Drive | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Andrea Portocarrero Castillo is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Portocarrero Castillo's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Portocarrero Castillo is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Portocarrero Castillo's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
- Ohio license
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, cirrhosis of the liver, colonoscopy, electrolyte disorders, gastroenteritis, gastrointestinal bleeding and intestinal diverticulosis among the conditions Dr. Portocarrero Castillo treats.
Gastroenterologists near Dr. Portocarrero Castillo
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Andrea Portocarrero Castillo billed Medicare for 487 services in 2024
CMS data shows 487 Medicare services from Dr. Portocarrero Castillo across 12 procedure codes in 2024, for 326 Medicare patients. Medicare paid $59,341 for them.
Dr. Portocarrero Castillo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3042024: 33310%
- Surgery
- 2023: 1002024: 919%
- Other services
- 2023: 622024: 5118%
- Tests and treatments
- 2023: 02024: 12
Where Dr. Portocarrero Castillo's Medicare services took place, 2024
- In an office46495%
- In a facility235%
Dr. Portocarrero Castillo compared with the California median for gastroenterologists, 2024
- Dr. Portocarrero Castillo
- California median
- Medicare services
- 487vs 58617% below
- Medicare patients
- 326vs 3028% above
- Part D claims
- 556vs 38046% above
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Portocarrero Castillo's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Andrea Portocarrero Castillo treated 326 Medicare patients in 2024, average age 72
CMS counts 326 Medicare patients who saw Dr. Portocarrero Castillo in 2024. The largest group is 65 to 74, with 133 patients. 71% of them have high cholesterol, and 66% have high blood pressure. 36% are also on Medicaid. Their average risk score is 1.60, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Portocarrero Castillo's median patient age at 54, with 71% women.
Dr. Portocarrero Castillo's Medicare patients by age, 2024
Dr. Portocarrero Castillo's Medicare patients by sex, 2024
- Women20061%
- Men12639%
Chronic conditions among Dr. Portocarrero Castillo's Medicare patients, 2024
- High cholesterol71%
- High blood pressure66%
- Arthritis42%
- Anxiety29%
- Diabetes29%
- Ischemic heart disease29%
- Mood disorders29%
- Osteoporosis26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Portocarrero Castillo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women71%
- Men27%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Andrea Portocarrero Castillo wrote 637 Medicare Part D claims in 2024
In 2024, Dr. Portocarrero Castillo wrote 637 Medicare Part D claims for 214 patients. 63% of them were for generic drugs. CMS names the drug for 556 of them, across 13 drugs with 11 or more claims each, at $167,203 in total drug cost. In 2023, CMS named 216 claims across 7 drugs.
Dr. Portocarrero Castillo's Part D claims by kind of drug, 2024
- Generic404 claims63%
- Brand-name233 claims37%
Dr. Portocarrero Castillo's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Portocarrero Castillo's Part D claims, 2024
- Antibiotics2%14 of 637 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2162024: 556157%
Drugs named by CMS: 13 in 2024, 7 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Andrea Portocarrero Castillo scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Portocarrero Castillo for performance year 2024, reported as part of a group. Dr. Portocarrero Castillo accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 18 procedures of colonoscopy by Dr. Portocarrero Castillo, more than 46% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Portocarrero Castillo's MIPS scores, performance year 2024
- 89of 100Final score
- 87.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Portocarrero Castillo ranks in Medicare procedure volume
- Colonoscopy
- 46th percentile18 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 46th percentile15 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Andrea Portocarrero Castillo received $49 in industry payments in 2023
CMS Open Payments shows 2 general payments to Dr. Portocarrero Castillo from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $49.
Companies that paid Dr. Portocarrero Castillo the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Andrea Portocarrero Castillo graduated from Cayetano Heredia University
Dr. Portocarrero Castillo graduated from Cayetano Heredia University in 2013.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Andrea Portocarrero Castillo accepts plans from 7 insurance carriers
Dr. Portocarrero Castillo is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
Plan types Dr. Portocarrero Castillo accepts, by number of carriers
- Medicare4
- PPO4
- HMO3
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Andrea Portocarrero Castillo's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Andrea Portocarrero Castillo
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Andrea Portocarrero Castillo's NPI number?
Dr. Andrea Portocarrero Castillo's NPI number is 1174978852. It was assigned on April 29, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrea Portocarrero Castillo?
Dr. Andrea Portocarrero Castillo is a gastroenterologist in Stanford, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Andrea Portocarrero Castillo practice?
Dr. Portocarrero Castillo practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Portocarrero Castillo's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Portocarrero Castillo to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. Andrea Portocarrero Castillo's office phone number?
The practice phone on file for Dr. Portocarrero Castillo is (650) 723-4000.
What is Dr. Andrea Portocarrero Castillo's medical license number?
Dr. Portocarrero Castillo holds California license A181751, one of the licenses on file in 2 states.
Which states has Dr. Andrea Portocarrero Castillo been licensed in?
Dmand AI has state licenses on file for Dr. Portocarrero Castillo in California (2022 to 2026) and Ohio (2016 to 2023).
Which hospitals is Dr. Andrea Portocarrero Castillo affiliated with?
Dr. Portocarrero Castillo practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dr. Portocarrero Castillo is also affiliated with Mission Regional Medical Center. Dmand AI links Dr. Portocarrero Castillo to 1 more hospital.
What medical group is Dr. Andrea Portocarrero Castillo part of?
Dr. Portocarrero Castillo is linked to Stanford Health Care. Dmand AI links Dr. Portocarrero Castillo to 1 more medical group.
Does Dr. Andrea Portocarrero Castillo accept Medicare?
Yes. CMS data shows Dr. Portocarrero Castillo billed Medicare for 487 services in 2024, and Dr. Portocarrero Castillo accepts Medicare assignment.
What is Dr. Andrea Portocarrero Castillo's MIPS score?
Dr. Portocarrero Castillo's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Andrea Portocarrero Castillo see?
CMS counts 326 Medicare patients who saw Dr. Portocarrero Castillo in 2024, with an average age of 72.
Is Dr. Andrea Portocarrero Castillo board certified?
Yes. Dr. Portocarrero Castillo is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Andrea Portocarrero Castillo bill to Medicare?
In 2024, Dr. Portocarrero Castillo's most billed Medicare services were office visit, established patient (99215), office visit, new patient (99205) and office visit, established patient (99214).
Where did Dr. Andrea Portocarrero Castillo go to medical school?
Dr. Portocarrero Castillo graduated from Cayetano Heredia University in 2013.
What drugs does Dr. Andrea Portocarrero Castillo prescribe most?
In 2024 Medicare Part D data, Dr. Portocarrero Castillo's most prescribed drugs by claims were Linzess, Omeprazole and Famotidine.
Has Dr. Andrea Portocarrero Castillo received payments from drug or device companies?
CMS Open Payments shows $49 in general payments to Dr. Portocarrero Castillo from 1 company from 2023 to 2023. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Andrea Portocarrero Castillo been practicing?
Dr. Portocarrero Castillo graduated from medical school in 2013, 13 years ago.
What insurance does Dr. Andrea Portocarrero Castillo accept?
Dr. Portocarrero Castillo is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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