Marites P. Del Rosario, M.D.
Specialist · Lancaster, CA
Marites P. Del Rosario, M.D. is a specialist with a practice address in Lancaster, California, and NPI 1205937349, issued on Sep 25, 2006. Check the license (California A53570, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marites P. Del Rosario
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- A53570 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1672 W Avenue J, Lancaster, CA 93534
- Phone
- (661) 726-2826
- Enumerated
- Sep 25, 2006
- Record last updated
- Jun 14, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (661) 723-9557
- Medicare enrollment
- Enrolled (PECOS I20130314000153); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 1672 W Avenue J
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roy Del-Rosario, M.D.Psychiatry Physician1740381870
- Gary Grubb, M.D.Family Medicine Physician1881891067
- Indu Jain, M.D.Anesthesiology Physician1639156979
- Lashanda Jones-Corneille, PH.D.Psychologist1679857569
- Jeffrey Stein, D.D.S.General Practice Dentistry1902864119
- Tamding Tempo, M.D., INC.Anesthesiology Physician1730166067
Verify Marites P. Del Rosario in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A53570Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average specialist in 2024
4,230 Medicare Part D claims for 277 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Alprazolam435 claims
- Duloxetine Hcl367 claims
- Lorazepam323 claims
- Trazodone Hcl281 claims
- Quetiapine Fumarate222 claims
- Zolpidem Tartrate212 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: $781.28
30 payments; by number, the most common kind was food and beverage; the largest payer was Alkermes, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 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
- AV Behavioral Medicine IncLancaster, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marites P. Del Rosario among 5,749 specialist records in California
Marites P. Del Rosario, M.D. is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1988 · median 1989 among the 1,075 with a school on file
- Record last updated2016 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Lancaster → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Javeed Ahmed, MDLancaster, CA 935341689627051
- Pradeep Damle, M.D.Lancaster, CA 935341770563116
- Wafaa Farid, MDLancaster, CA 935341811002082
- Sameh Gadallah, M.D.Lancaster, CA 935341205897535
- Emma Graber, M.D.Lancaster, CA 935341922057918
- Syed Hasan, MDLancaster, CA 935341528010998
- Pramod Kadambi, M.D.Lancaster, CA 935341114988441
- Dennis Latuno, M.D.Lancaster, CA 935341205841087
Common questions
What is Marites P. Del Rosario, M.D.'s NPI number?
Marites P. Del Rosario, M.D.'s National Provider Identifier (NPI) is 1205937349, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marites P. Del Rosario, M.D. located?
The NPPES record lists a practice address at 1672 W Avenue J, Lancaster, CA, 93534. Phone: (661) 726-2826. Providers update this record themselves, so call before visiting.
How can I verify Marites P. Del Rosario, M.D.'s license?
NPPES lists California license number A53570, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Marites P. Del Rosario, M.D. prescribe under Medicare Part D?
In 2024, Marites P. Del Rosario, M.D. had 4,230 Medicare Part D claims for 277 beneficiaries; the average among specialist prescribers was 1,380. 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.