Viswam Nair, MD
NPI 1336336460 · Pulmonary Disease Physician · Berkeley, CA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Viswam Nair, MD is a Pulmonary Disease Physician provider in Berkeley, CA (NPI 1336336460).
Provider details
- NPI number
- 1336336460
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A93740 (CA)
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
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
421 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) |
|---|---|---|
| Test to Examine How Well the Lungs Exchange Gases94729 | 101 | $9 |
| Test to Determine Lung Volumes Using Sensors94726 | 98 | $12 |
| Test to Measure Expiratory Airflow and Volume94010 | 79 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 41 | $103 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 33 | $152 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 29 |
Practice location
Mailing address
Additional practice locations (2)
- 4053 Lone Tree Way Ste 201Antioch, CA 94531-6210Phone: (510) 204-5479Fax: (510) 506-7721
- 825 Eastlake Ave ESeattle, WA 98109-4405Phone: (206) 520-5000
Registry dates
- Enumerated
- 2007-10-02
- Last updated
- 2025-09-18
- Certified
- 2025-09-18
Frequently asked questions
- What is Viswam Nair's NPI number?
- Viswam Nair's National Provider Identifier (NPI) is 1336336460, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Viswam Nair's specialty?
- Viswam Nair is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Viswam Nair located?
- Viswam Nair's practice location on file with NPPES is 2850 Telegraph Ave Ste 120, Berkeley, CA 94705-1159.
- What is Viswam Nair's phone number?
- The practice phone number listed in the NPPES registry for Viswam Nair is (510) 204-8140.
- Does Viswam Nair accept Medicare?
- Viswam Nair is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Viswam Nair's NPI active?
- Yes — Viswam Nair's NPI (1336336460) is active in the NPPES registry as of the last update on 2025-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.