Usha Periyanayagam, M.D.
NPI 1346478385 · Emergency Medicine Physician · San Francisco, CA
Usha Periyanayagam, M.D. is a Emergency Medicine Physician provider in San Francisco, CA (NPI 1346478385).
Provider details
- NPI number
- 1346478385
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125055892 (IL)
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 tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-29
- Last updated
- 2022-01-26
- Certified
- 2022-01-26
Frequently asked questions
- What is Usha Periyanayagam's NPI number?
- Usha Periyanayagam's National Provider Identifier (NPI) is 1346478385, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Usha Periyanayagam's specialty?
- Usha Periyanayagam is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Usha Periyanayagam located?
- Usha Periyanayagam's practice location on file with NPPES is 680 Mission St, San Francisco, CA 94105-4000.
- What is Usha Periyanayagam's phone number?
- The practice phone number listed in the NPPES registry for Usha Periyanayagam is (270) 853-9302.
- Is Usha Periyanayagam's NPI active?
- Yes — Usha Periyanayagam's NPI (1346478385) is active in the NPPES registry as of the last update on 2022-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.