Maria Trinidad Mejia, PA
- Medicare patients, 2024
- 15
- Part D claims, 2024
- 328
- MIPS score, 2024
- 100
- Hospital affiliations
- 2
- Medical groups
- 6
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-3910
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fontana Medical Center
Fontana, California
Find Maria Mejia'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.
Maria Trinidad Mejia is a physician assistant in Fontana, California
Maria Mejia practices at Fontana Medical Center in Fontana, California.
Maria Mejia's NPI, 1215307640, was assigned on September 28, 2015. Maria Mejia holds California license 52936.
- NPI
- 1215307640NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901107374
- NPI enumeration date
- September 28, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-3910
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Maria Trinidad Mejia practices at Fontana Medical Center in Fontana, California
Maria Mejia's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-3910.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-3910
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Maria Trinidad Mejia is affiliated with 3 sites of care and 6 medical groups
Maria Mejia's primary practice is Fontana Medical Center in Fontana, California. Maria Mejia is also affiliated with Arrowhead Regional Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Maria Mejia to 1 more hospital and 5 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Maria Trinidad Mejia's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Maria Mejia practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
| +2 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Maria Trinidad Mejia is one of 11,482 physician assistants in California
Physician assistant is Maria Mejia's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Maria Mejia is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Maria Mejia is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Maria Mejia
Counts of physician assistants 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
Maria Trinidad Mejia treated 15 Medicare patients in 2024, average age 64
CMS counts 15 Medicare patients who saw Maria Mejia in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Maria Mejia's median patient age at 28, with 60% women.
Maria Mejia's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Maria Mejia's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 28
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Maria Trinidad Mejia wrote 328 Medicare Part D claims in 2024
In 2024, Maria Mejia wrote 328 Medicare Part D claims for 255 patients. 84% of them were for generic drugs. CMS names the drug for 213 of them, across 10 drugs with 11 or more claims each, at $2,427 in total drug cost.
Maria Mejia's Part D claims by kind of drug, 2024
- Generic277 claims84%
- Brand-name51 claims16%
Maria Mejia'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 Maria Mejia's Part D claims, 2024
- Antibiotics48%159 of 328 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Maria Trinidad Mejia scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Maria Mejia for performance year 2024, reported as part of a group. Maria Mejia accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Maria Mejia's MIPS scores, performance year 2024
- 100of 100Final score
- 89.6of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Maria Trinidad Mejia is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Maria Trinidad Mejia'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Maria Trinidad Mejia
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Maria Trinidad Mejia's NPI number?
Maria Trinidad Mejia's NPI number is 1215307640. It was assigned on September 28, 2015, and it is active in the NPI Registry.
What does Maria Trinidad Mejia specialize in?
Maria Trinidad Mejia is a physician assistant in Fontana, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Maria Trinidad Mejia practice?
Maria Mejia practices at 9961 Sierra Ave, Fontana, CA 92335. Maria Mejia's primary practice is Fontana Medical Center in Fontana, California. Dmand AI also links Maria Mejia to 1 hospital and 5 medical groups.
What is Maria Trinidad Mejia's office phone number?
The practice phone on file for Maria Mejia is (909) 427-3910.
What is Maria Trinidad Mejia's medical license number?
Maria Mejia holds California license 52936.
Which hospitals is Maria Trinidad Mejia affiliated with?
Maria Mejia is affiliated with Arrowhead Regional Medical Center. Dmand AI links Maria Mejia to 1 more hospital.
What medical group is Maria Trinidad Mejia part of?
Maria Mejia is linked to Southern California Permanente Medical Group. Dmand AI links Maria Mejia to 5 more medical groups.
Does Maria Trinidad Mejia accept Medicare?
Yes. CMS lists Maria Mejia as accepting Medicare assignment.
What is Maria Trinidad Mejia's MIPS score?
Maria Mejia's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Maria Trinidad Mejia see?
CMS counts 15 Medicare patients who saw Maria Mejia in 2024, with an average age of 64.
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Is Maria Trinidad Mejia board certified?
Yes. Maria Mejia is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What drugs does Maria Trinidad Mejia prescribe most?
In 2024 Medicare Part D data, Maria Mejia's most prescribed drugs by claims were Cefadroxil, Albuterol Sulfate Hfa and Amoxicillin-Clavulanate Potass.
How long has Maria Trinidad Mejia been practicing?
Maria Mejia graduated from medical school in 2015, 11 years ago.
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