Anthony Rajasingham, MD
NPI 1619400777 · Internal Medicine Physician · Colton, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anthony Rajasingham, MD is a Internal Medicine Physician provider in Colton, CA (NPI 1619400777).
Provider details
- NPI number
- 1619400777
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A165844 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
53 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 53 | $79 |
Typical Medicare-allowed amounts for these services range $79–$79 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefpodoxime Proxetil | 32 | 31 |
| Furosemide | 30 | 19 |
| Atorvastatin Calcium | 29 | 21 |
| Amlodipine Besylate | 25 | 15 |
| Pantoprazole Sodium | 23 | 18 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 20 | 13 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-04-06
- Last updated
- 2021-12-23
- Certified
- 2021-12-23
Frequently asked questions
- What is Anthony Rajasingham's NPI number?
- Anthony Rajasingham's National Provider Identifier (NPI) is 1619400777, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anthony Rajasingham's specialty?
- Anthony Rajasingham is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Anthony Rajasingham located?
- Anthony Rajasingham's practice location on file with NPPES is 400 N Pepper Ave, Colton, CA 92324-1801.
- What is Anthony Rajasingham's phone number?
- The practice phone number listed in the NPPES registry for Anthony Rajasingham is (909) 580-1000.
- Does Anthony Rajasingham accept Medicare?
- Anthony Rajasingham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anthony Rajasingham's NPI active?
- Yes — Anthony Rajasingham's NPI (1619400777) is active in the NPPES registry as of the last update on 2021-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.