Tapan Roy, M.D.
NPI 1205831922 · Radiation Oncology Physician · Tustin, CA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tapan Roy, M.D. is a Radiation Oncology Physician provider in Tustin, CA (NPI 1205831922).
Provider details
- NPI number
- 1205831922
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- R4B37 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 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
534 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) |
|---|---|---|
| High Dose Rate Electronic Brachytherapy, External0394T | 171 | $165 |
| Use of Externally Generated Heat to Increase Temperature of Cancer Cell, Heating to Depths 4.0 Cm Or Less77600 | 128 | $587 |
| Obtaining Data Needed to Develop the Optimal Radiation Treatment, 3 Or More Treatment Areas Or Any Number of Treatment Areas Where Special Treatment Is Involved77290 | 105 | $477 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 75 | $94 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More99202 | 55 | $74 |
Typical Medicare-allowed amounts for these services range $74–$587 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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
- 2005-06-17
- Last updated
- 2022-01-17
- Certified
- 2022-01-17
Frequently asked questions
- What is Tapan Roy's NPI number?
- Tapan Roy's National Provider Identifier (NPI) is 1205831922, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tapan Roy's specialty?
- Tapan Roy is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Tapan Roy located?
- Tapan Roy's practice location on file with NPPES is 14662 Newport Ave, Tustin, CA 92780-6064.
- What is Tapan Roy's phone number?
- The practice phone number listed in the NPPES registry for Tapan Roy is (714) 573-9500.
- Does Tapan Roy accept Medicare?
- Tapan Roy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tapan Roy's NPI active?
- Yes — Tapan Roy's NPI (1205831922) is active in the NPPES registry as of the last update on 2022-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.