Vellaiappan Somasundaram, MD
NPI 1891745386 · Internal Medicine Physician · Frisco, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vellaiappan Somasundaram, MD is a Internal Medicine Physician provider in Frisco, TX (NPI 1891745386).
Provider details
- NPI number
- 1891745386
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 35436 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,158 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 416 | $75 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 252 | $50 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 166 | $76 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 97 | $48 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 95 | $78 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 228 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 918 | 187 |
| Pantoprazole Sodium | 749 | 156 |
| Amlodipine Besylate | 686 | 133 |
| Levothyroxine Sodium | 685 | 120 |
| Atorvastatin Calcium | 641 | 149 |
| Lisinopril | 620 | 127 |
| Clonazepam |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$110 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1630 W Prosper Trl Ste 430Prosper, TX 75078-3742Phone: (214) 666-6259
Registry dates
- Enumerated
- 2006-05-12
- Last updated
- 2026-05-18
- Certified
- 2026-05-18
Frequently asked questions
- What is Vellaiappan Somasundaram's NPI number?
- Vellaiappan Somasundaram's National Provider Identifier (NPI) is 1891745386, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vellaiappan Somasundaram's specialty?
- Vellaiappan Somasundaram is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Vellaiappan Somasundaram located?
- Vellaiappan Somasundaram's practice location on file with NPPES is 8195 Custer Rd Ste 110, Frisco, TX 75035-3195.
- What is Vellaiappan Somasundaram's phone number?
- The practice phone number listed in the NPPES registry for Vellaiappan Somasundaram is (214) 666-6259.
- Does Vellaiappan Somasundaram accept Medicare?
- Vellaiappan Somasundaram is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vellaiappan Somasundaram's NPI active?
- Yes — Vellaiappan Somasundaram's NPI (1891745386) is active in the NPPES registry as of the last update on 2026-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.