Donald J. Portocarrero, D.O.
Gastroenterology Physician · Arcadia, CA
Donald J. Portocarrero, D.O. is a gastroenterology physician with a practice address in Arcadia, California, and NPI 1841503570, issued on Jul 22, 2010. Check the license (California 20A11058, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Donald J. Portocarrero
- Credential
- D.O.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 20A11058 CA
Self-reported in NPPES; status is on the state search - Practice location
- 623 W Duarte RD Ste 8, Arcadia, CA 91007
- Phone
- (626) 461-5408
- Enumerated
- Jul 22, 2010
- Record last updated
- Mar 14, 2024
- Fax
- (626) 461-5436
- Medicare enrollment
- Enrolled (PECOS I20140416001904); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 623 W Duarte RD Ste 8
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Taylor CoxHearing Instrument Specialist1952960130
- Patricia De La Rocha, NPNurse Practitioner1194580845
- Guy Natale, M.D.Internal Medicine Physician1255491510
Verify Donald J. Portocarrero in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11058Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average gastroenterology physician in 2024
535 Medicare Part D claims for 322 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Omeprazole170 claims
- Gavilyte-G162 claims
- Peg-3350 And Electrolytes65 claims
- Amoxicillin17 claims
- Clarithromycin17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $478.79
9 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Donald J. Portocarrero among 2,140 gastroenterology physician records in California
Donald J. Portocarrero, D.O. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 72% of them.
- NPI issued2010 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2008 · median 2002 among the 1,538 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Arcadia → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael Chu, M.D.Arcadia, CA 910071952491805
- Jacob Korula, M.D.Arcadia, CA 910071295732568
- Hanson Lee, M.D.Arcadia, CA 910071730181116
- Sunny Lo, D.O.Arcadia, CA 910071891053187
- Kenneth Shan, MDArcadia, CA 910071629605431
- George Thomas, M.D.Arcadia, CA 910071649293150
- Elias Tarakji, M.D.Arcadia, CA 910061467454835
- Donald David, MDDuarte, CA 910101588767131
Common questions
What is Donald J. Portocarrero, D.O.'s NPI number?
Donald J. Portocarrero, D.O.'s National Provider Identifier (NPI) is 1841503570, issued on Jul 22, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Donald J. Portocarrero, D.O. located?
The NPPES record lists a practice address at 623 W Duarte RD Ste 8, Arcadia, CA, 91007. Phone: (626) 461-5408. Providers update this record themselves, so call before visiting.
How can I verify Donald J. Portocarrero, D.O.'s license?
NPPES lists California license number 20A11058, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Donald J. Portocarrero, D.O. prescribe under Medicare Part D?
In 2024, Donald J. Portocarrero, D.O. had 535 Medicare Part D claims for 322 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.