Dr. Maria Corazon Matias Piansay, FAAP, MD, MPH
- Industry payments
- $1,592
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 12
- State license
- 1
- Practice address
- 1637 Third Avenue, Suite B, Chula Vista, CA 91911
- Practice phone
- Call (619) 425-1780
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Ysidro Health Otay
FQHC - Main Site · Chula Vista, California
Find Dr. Piansay'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. Maria Corazon Matias Piansay is a pediatrician in Chula Vista, California
Dr. Piansay practices at San Ysidro Health Otay in Chula Vista, California.
Dr. Piansay's NPI, 1669680351, was assigned on May 18, 2007. Dr. Piansay graduated from University of the East College of Medicine in 1993. Dr. Piansay holds California license A93785.
- NPI
- 1669680351NPI Registry (opens in a new tab)
- NPI enumeration date
- May 18, 2007
- NPI status
- Active
- Practice phone
- (619) 425-1780
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Maria Corazon Matias Piansay practices at San Ysidro Health Otay in Chula Vista, California
Dr. Piansay's primary practice is San Ysidro Health Otay, at 1637 Third Avenue, Suite B, Chula Vista, CA 91911 in San Diego County. The practice phone is (619) 425-1780.
- San Ysidro Health Otay1637 Third Avenue, Suite B, Chula Vista, CA 91911 · San Diego CountyPhone(619) 425-1780
Source: Dmand AI Affiliation Data
Dr. Maria Corazon Matias Piansay is affiliated with 1 site of care and 1 medical group
Dr. Piansay's primary practice is San Ysidro Health Otay in Chula Vista, California. The medical group on file is San Ysidro Health. Dr. Piansay's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Maria Corazon Matias Piansay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Piansay practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Ysidro Health Otay | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Maria Corazon Matias Piansay is one of 8,236 pediatricians in California
Pediatrics is Dr. Piansay's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Piansay is board certified in pediatrics by the American Board of Pediatrics. Dr. Piansay is licensed in California.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
Pediatricians near Dr. Piansay
Counts of pediatricians 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. Maria Corazon Matias Piansay's patients have a median age of 11
Across all payers, Dmand AI patient panel data puts Dr. Piansay's median patient age at 11, with 51% women.
Dr. Piansay's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 11
Patient panel by sex, all payers
- Women51%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Maria Corazon Matias Piansay received $1,592 in industry payments from 2016 to 2025
CMS Open Payments shows 40 general payments to Dr. Piansay from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Rhythm Pharmaceuticals, Inc. paid the most, $260.
General payments to Dr. Piansay by program year, 2016 to 2025
Companies that paid Dr. Piansay the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Maria Corazon Matias Piansay graduated from University of the East College of Medicine
Dr. Piansay graduated from University of the East College of Medicine in 1993.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Maria Corazon Matias Piansay accepts plans from 12 insurance carriers
Dr. Piansay is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Molina
- Regence Health Plans
- +4 more carriersWith a free account
Plan types Dr. Piansay accepts, by number of carriers
- PPO8
- Medicare7
- HMO6
- POS4
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Maria Corazon Matias Piansay'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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. Maria Corazon Matias Piansay
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. Maria Corazon Matias Piansay's NPI number?
Dr. Maria Corazon Matias Piansay's NPI number is 1669680351. It was assigned on May 18, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Maria Corazon Matias Piansay?
Dr. Maria Corazon Matias Piansay is a pediatrician in Chula Vista, California. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Maria Corazon Matias Piansay practice?
Dr. Piansay practices at 1637 Third Avenue, Suite B, Chula Vista, CA 91911. Dr. Piansay's primary practice is San Ysidro Health Otay in Chula Vista, California.
What is Dr. Maria Corazon Matias Piansay's office phone number?
The practice phone on file for Dr. Piansay is (619) 425-1780.
What is Dr. Maria Corazon Matias Piansay's medical license number?
Dr. Piansay holds California license A93785.
What medical group is Dr. Maria Corazon Matias Piansay part of?
Dr. Piansay is linked to San Ysidro Health.
Is Dr. Maria Corazon Matias Piansay board certified?
Yes. Dr. Piansay is board certified in pediatrics by the American Board of Pediatrics.
Where did Dr. Maria Corazon Matias Piansay go to medical school?
Dr. Piansay graduated from University of the East College of Medicine in 1993.
Has Dr. Maria Corazon Matias Piansay received payments from drug or device companies?
CMS Open Payments shows $1,592 in general payments to Dr. Piansay from 13 companies from 2016 to 2025. The largest total came from Rhythm Pharmaceuticals, Inc.
How long has Dr. Maria Corazon Matias Piansay been practicing?
Dr. Piansay graduated from medical school in 1993, 33 years ago.
What insurance does Dr. Maria Corazon Matias Piansay accept?
Dr. Piansay is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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