Tejinder Singh, MD
Internal Medicine Physician · Upland, CA
Tejinder Singh, MD is an internal medicine physician with a practice address in Upland, California, and NPI 1104820729, issued on Jun 10, 2005. Check the license (California A41265, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tejinder Singh
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A41265 CA
Self-reported in NPPES; status is on the state search - Practice location
- 914 W Foothill Blvd, Upland, CA 91786
- Phone
- (909) 982-8944
- Enumerated
- Jun 10, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (909) 985-0932
- Medicaid ID
- 00A412650 CA
- Medicare enrollment
- Enrolled (PECOS I20081230000000); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Tejinder Singh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A41265Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.4 times the Medicare Part D claims of the average internal medicine physician in 2024
13,836 Medicare Part D claims for 733 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. 249 claims were for opioids.
Most prescribed
- Atorvastatin Calcium748 claims
- Levothyroxine Sodium571 claims
- Amlodipine Besylate477 claims
- Omeprazole448 claims
- Metformin Hcl419 claims
- Losartan Potassium316 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.
Bills Medicare through one group practice
- Mukesh Amin MD And Tejinder Singh MD IncUpland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tejinder Singh among 17,696 internal medicine physician records in California
Tejinder Singh, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1978 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 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).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Upland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nahel Al Bouz, M.D.Upland, CA 917861326235136
- Susan Biegel, M.D.Upland, CA 917861710956412
- Michael Chai, M.D.Upland, CA 917861083748727
- Johnny Choi, M.D.Upland, CA 917861376640714
- Michael Creagan, MDUpland, CA 917861487813002
- David Engelhardt, M.D.Upland, CA 917861972595122
- Ghassan Hadi, M.D.Upland, CA 917861558497891
- Bhupal Kommineni, MD FACPUpland, CA 917861457324808
Common questions
What is Tejinder Singh, MD's NPI number?
Tejinder Singh, MD's National Provider Identifier (NPI) is 1104820729, issued on Jun 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Tejinder Singh, MD located?
The NPPES record lists a practice address at 914 W Foothill Blvd, Upland, CA, 91786. Phone: (909) 982-8944. Providers update this record themselves, so call before visiting.
How can I verify Tejinder Singh, MD's license?
NPPES lists California license number A41265, 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 Tejinder Singh, MD prescribe under Medicare Part D?
In 2024, Tejinder Singh, MD had 13,836 Medicare Part D claims for 733 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.