Karthik Vadamalai, M.D
NPI 1366881393 · Critical Care Medicine (Internal Medicine) Physician · Houston, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karthik Vadamalai, M.D is a Critical Care Medicine (Internal Medicine) Physician provider in Houston, TX (NPI 1366881393).
Provider details
- NPI number
- 1366881393
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 2018034906 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
589 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 343 | $113 |
| Critical Care, First 30-74 Minutes99291 | 198 | $203 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 33 | $165 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 15 | $42 |
Typical Medicare-allowed amounts for these services range $42–$203 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (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 (3)
- 1235 E Cherokee StSpringfield, MO 65804-2203Phone: (417) 820-3344
- 1425 Portland AveRochester, NY 14621-3001Phone: (585) 922-4000
- 6720 Bertner Ave Ste O-520Houston, TX 77030-2604Phone: (832) 355-2666
Registry dates
- Enumerated
- 2013-06-24
- Last updated
- 2022-11-23
- Certified
- 2022-11-23
Frequently asked questions
- What is Karthik Vadamalai's NPI number?
- Karthik Vadamalai's National Provider Identifier (NPI) is 1366881393, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karthik Vadamalai's specialty?
- Karthik Vadamalai is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Karthik Vadamalai located?
- Karthik Vadamalai's practice location on file with NPPES is 7200 Cambridge St Fl 10, Houston, TX 77030-4202.
- What is Karthik Vadamalai's phone number?
- The practice phone number listed in the NPPES registry for Karthik Vadamalai is (713) 798-1750.
- Does Karthik Vadamalai accept Medicare?
- Karthik Vadamalai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karthik Vadamalai's NPI active?
- Yes — Karthik Vadamalai's NPI (1366881393) is active in the NPPES registry as of the last update on 2022-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.