Thillaiampalam Srijaerajah, MD
Internal Medicine Physician · California City, CA
Thillaiampalam Srijaerajah, MD is an internal medicine physician with a practice address in California City, California, and NPI 1538271002, issued on Aug 31, 2006. Check the license (California A33938, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thillaiampalam Srijaerajah
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A33938 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9278 N Loop Blvd, California City, CA 93505
- Phone
- (760) 373-4809
- Enumerated
- Aug 31, 2006
- Record last updated
- Oct 26, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (760) 373-4800
- Medicaid IDs
- GR0064250 CA
GR0064251 CA - Medicare enrollment
- Enrolled (PECOS I20110216000435); accepts Medicare assignment
- Medical or professional school
- Hospital College Of Medicine, 1971
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 9278 N Loop Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley KehindeFamily Nurse Practitioner1225796683
Verify Thillaiampalam Srijaerajah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A33938Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average internal medicine physician in 2024
9,367 Medicare Part D claims for 605 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 21 claims were for opioids.
Most prescribed
- Atorvastatin Calcium589 claims
- Amlodipine Besylate570 claims
- Metformin Hcl426 claims
- Losartan Potassium332 claims
- Levothyroxine Sodium331 claims
- Lisinopril323 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): 92.4 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: $174.63
8 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Cajon Medical Group PCLancaster, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thillaiampalam Srijaerajah among 17,696 internal medicine physician records in California
Thillaiampalam Srijaerajah, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1971 · median 2004 among the 11,065 with a school on file
- Record last updated2010 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 internal medicine physician records list a practice address in California City
They are 2 of the 60 NPPES records with a practice address in California City, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in California City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ashmead Ali, MDCalifornia City, CA 935051215009113
- Olatokunbo Ayoolaarchie, M.D.Mojave, CA 935011891969572
- Jeremiah ChengBishop, CA 935141043698061
- Nickoline Hathaway, MDBishop, CA 935141629005749
- Asao Kamei, MDBishop, CA 935141881636181
- David Lichtenfeld, MDBishop, CA 935141902484132
- Manish Pandya, M.D.Bishop, CA 935141659719755
- Susan Robinson, M.D.Bishop, CA 935141245784917
Common questions
What is Thillaiampalam Srijaerajah, MD's NPI number?
Thillaiampalam Srijaerajah, MD's National Provider Identifier (NPI) is 1538271002, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thillaiampalam Srijaerajah, MD located?
The NPPES record lists a practice address at 9278 N Loop Blvd, California City, CA, 93505. Phone: (760) 373-4809. Providers update this record themselves, so call before visiting.
How can I verify Thillaiampalam Srijaerajah, MD's license?
NPPES lists California license number A33938, 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 Thillaiampalam Srijaerajah, MD prescribe under Medicare Part D?
In 2024, Thillaiampalam Srijaerajah, MD had 9,367 Medicare Part D claims for 605 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Thillaiampalam Srijaerajah, MD's MIPS final score?
The 2023 MIPS final score is 92.4 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.