Kalyani Theivanayagam, M.D.
NPI 1598878910 · Internal Medicine Physician · Summit, NJ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kalyani Theivanayagam, M.D. is a Internal Medicine Physician provider in Summit, NJ (NPI 1598878910).
Provider details
- NPI number
- 1598878910
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 25MA06857500 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
941 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 35 Minutes99232 | 271 | $83 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 158 | $125 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 89 | $68 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 87 | $140 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 69 | $183 |
| Hospital Discharge Day Management, 30 Minutes Or Less |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 128 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 540 | 116 |
| Amlodipine Besylate | 425 | 96 |
| Metformin Hcl | 315 | 61 |
| Carvedilol | 231 | 51 |
| Furosemide | 195 | 40 |
| Allopurinol | 188 | 32 |
| Pantoprazole Sodium | 185 | 53 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$122 across 4 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
Registry dates
- Enumerated
- 2006-08-17
- Last updated
- 2010-12-23
Frequently asked questions
- What is Kalyani Theivanayagam's NPI number?
- Kalyani Theivanayagam's National Provider Identifier (NPI) is 1598878910, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kalyani Theivanayagam's specialty?
- Kalyani Theivanayagam is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kalyani Theivanayagam located?
- Kalyani Theivanayagam's practice location on file with NPPES is 276 Woodland Ave, Summit, NJ 07901-1437.
- What is Kalyani Theivanayagam's phone number?
- The practice phone number listed in the NPPES registry for Kalyani Theivanayagam is (973) 669-8181.
- Does Kalyani Theivanayagam accept Medicare?
- Kalyani Theivanayagam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kalyani Theivanayagam's NPI active?
- Yes — Kalyani Theivanayagam's NPI (1598878910) is active in the NPPES registry as of the last update on 2010-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.