Erica Chia-Chi Medina, MD
Obstetrics & Gynecology Physician · Fontana, CA
Erica Chia-Chi Medina, MD is an obstetrics & gynecology physician with a practice address in Fontana, California, and NPI 1023541380, issued on Apr 4, 2017. Check the license (California A156896, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Erica Chia-Chi Medina
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A156896 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9961 Sierra Ave, Fontana, CA 92335
- Phone
- (833) 574-2273
- Enumerated
- Apr 4, 2017
- Record last updated
- Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20211103002232); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 9961 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eduardo Acosta, MDPediatrics Physician1497803324
- Michael Adair, MDFamily Medicine Physician1780732651
- Berneva Adams, MDObstetrics & Gynecology Physician1376602987
Verify Erica Chia-Chi Medina in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A156896Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
24 Medicare Part D claims for 14 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupFontana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erica Chia-Chi Medina among 5,088 obstetrics & gynecology physician records in California
Erica Chia-Chi Medina, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 87% of them.
- NPI issued2017 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2017 · median 2004 among the 2,700 with a school on file
- Record last updated2021 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
50 obstetrics & gynecology physician records list a practice address in Fontana
They are 50 of the 3,012 NPPES records with a practice address in Fontana, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Fontana → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Berneva Adams, MDFontana, CA 923351376602987
- Curt Bouma, MDFontana, CA 923351629145537
- Kenneth Griffis Jr., MDFontana, CA 923351437218146
- Jerrelyn Inocencio-Diaz, MDFontana, CA 923351326115163
- Linda Knudtson, MDFontana, CA 923351689745622
- Sung Lee, MDFontana, CA 923351124195276
- Elaine Pan, MDFontana, CA 923351821165721
- Rodney Parker, MDFontana, CA 923351437226396
Common questions
What is Erica Chia-Chi Medina, MD's NPI number?
Erica Chia-Chi Medina, MD's National Provider Identifier (NPI) is 1023541380, issued on Apr 4, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Erica Chia-Chi Medina, MD located?
The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (833) 574-2273. Providers update this record themselves, so call before visiting.
How can I verify Erica Chia-Chi Medina, MD's license?
NPPES lists California license number A156896, 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 Erica Chia-Chi Medina, MD prescribe under Medicare Part D?
In 2024, Erica Chia-Chi Medina, MD had 24 Medicare Part D claims for 14 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.