Rupert Rajaratnam, M.D.
NPI 1922044833 · Specialist · Lancaster, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rupert Rajaratnam, M.D. is a Specialist provider in Lancaster, CA (NPI 1922044833).
Provider details
- NPI number
- 1922044833
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A83675 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
28 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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 28 | $139 |
Typical Medicare-allowed amounts for these services range $139–$139 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-20
- Last updated
- 2009-10-07
Frequently asked questions
- What is Rupert Rajaratnam's NPI number?
- Rupert Rajaratnam's National Provider Identifier (NPI) is 1922044833, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rupert Rajaratnam's specialty?
- Rupert Rajaratnam is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Rupert Rajaratnam located?
- Rupert Rajaratnam's practice location on file with NPPES is 43830 10th St W, Lancaster, CA 93534-4826.
- What is Rupert Rajaratnam's phone number?
- The practice phone number listed in the NPPES registry for Rupert Rajaratnam is (661) 940-1346.
- Does Rupert Rajaratnam accept Medicare?
- Rupert Rajaratnam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rupert Rajaratnam's NPI active?
- Yes — Rupert Rajaratnam's NPI (1922044833) is active in the NPPES registry as of the last update on 2009-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.