Martha C. Ajca, P.A.C
Physician Assistant · Fontana, CA
Martha C. Ajca, P.A.C is a physician assistant with a practice address in Fontana, California, and NPI 1396175758, issued on Nov 22, 2013. Check the license (California 51264, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Martha C. Ajca
- Credential
- P.A.C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 51264 CA
Self-reported in NPPES; status is on the state search - Practice location
- 17051 Sierra Lakes Parkway, Fontana, CA 92336
- Phone
- (909) 428-2040
- Enumerated
- Nov 22, 2013
- Record last updated
- Nov 5, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (909) 428-2191
- Medicare enrollment
- Enrolled (PECOS I20151028002153); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Martha C. Ajca in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 51264Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average physician assistant in 2024
2,002 Medicare Part D claims for 235 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Atorvastatin Calcium135 claims
- Metformin Hcl85 claims
- Amlodipine Besylate72 claims
- Ozempic72 claims
- Lisinopril59 claims
- Tamsulosin Hcl58 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.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $466.54
4 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 64,719 providers of this specialty with any payment received $841.65 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.
Bills Medicare through one group practice
- Healthcare IN Action Medical GroupLong Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Martha C. Ajca among 14,451 physician assistant records in California
Martha C. Ajca, P.A.C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 35% of them.
- NPI issued2013 · 35% of these records are older, 62% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2013 · median 2018 among the 7,214 with a school on file
- Record last updated2015 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
97 physician assistant records list a practice address in Fontana
They are 97 of the 3,012 NPPES records with a practice address in Fontana, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Fontana → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Yaw Asamoah, PA-CFontana, CA 923361083917439
- Khristine Marie Bueno, PA-CFontana, CA 923361811356439
- Giuliana Cilliani, PA-CFontana, CA 923361043504913
- Lauren Crostic, PA-CFontana, CA 923361215385448
- Natalie Herrera, PA-CFontana, CA 923361407237498
- Emanuel Jean-Pierre, PA-CFontana, CA 923361649306457
- Michelle Laksana, PA-CFontana, CA 923361851709414
- Jackeline Lopez, PA-C, RDNFontana, CA 923361295246692
Common questions
What is Martha C. Ajca, P.A.C's NPI number?
Martha C. Ajca, P.A.C's National Provider Identifier (NPI) is 1396175758, issued on Nov 22, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Martha C. Ajca, P.A.C located?
The NPPES record lists a practice address at 17051 Sierra Lakes Parkway, Fontana, CA, 92336. Phone: (909) 428-2040. Providers update this record themselves, so call before visiting.
How can I verify Martha C. Ajca, P.A.C's license?
NPPES lists California license number 51264, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Martha C. Ajca, P.A.C prescribe under Medicare Part D?
In 2024, Martha C. Ajca, P.A.C had 2,002 Medicare Part D claims for 235 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Martha C. Ajca, P.A.C's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.