Ravi Viswanathan, MD
NPI 1326084534 · Allergy Physician · Madison, WI
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ravi Viswanathan, MD is a Allergy Physician provider in Madison, WI (NPI 1326084534).
Provider details
- NPI number
- 1326084534
- Entity type
- Individual
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 52208 (WI)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
789 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) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 314 | $3 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 206 | $90 |
| Test to Measure Expiratory Airflow and Volume94010 | 165 | $8 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 37 | $123 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 27 | $134 |
| Test for Allergy Using Ingested Items, Initial 2 Hours95076 | 26 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 247 | 73 |
| Fluticasone Propionate | 154 | 55 |
| Mometasone/Formoterolbrand: Dulera | 139 | 28 |
| Fluticasone Propionatebrand: Fluticasone Propionate Hfa | 108 | 28 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 105 | 52 |
| Fluticasone Propion/Salmeterolbrand: Advair Hfa | 103 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,817 across 3 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
- 2006-06-22
- Last updated
- 2021-10-26
- Certified
- 2021-10-26
Frequently asked questions
- What is Ravi Viswanathan's NPI number?
- Ravi Viswanathan's National Provider Identifier (NPI) is 1326084534, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ravi Viswanathan's specialty?
- Ravi Viswanathan is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is Ravi Viswanathan located?
- Ravi Viswanathan's practice location on file with NPPES is 451 Junction Rd, Madison, WI 53717-2656.
- What is Ravi Viswanathan's phone number?
- The practice phone number listed in the NPPES registry for Ravi Viswanathan is (608) 263-6180.
- Does Ravi Viswanathan accept Medicare?
- Ravi Viswanathan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ravi Viswanathan's NPI active?
- Yes — Ravi Viswanathan's NPI (1326084534) is active in the NPPES registry as of the last update on 2021-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.