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Patti Allen, M.D.
NPI 1659438489 · Internal Medicine Physician · Sunnyvale, CA
Patti Allen, M.D. is a Internal Medicine Physician provider in Sunnyvale, CA (NPI 1659438489).
Provider details
- NPI number
- 1659438489
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- C52863 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
401 Old San Francisco Rd
Sunnyvale, CA 94086-6387
Phone: (408) 730-4360
Street-level locationGet directions
Mailing address
2350 W El Camino Real
Mountain View, CA 94040-6201
Registry dates
- Enumerated
- 2007-01-02
- Last updated
- 2011-11-29
Frequently asked questions
- What is Patti Allen's NPI number?
- Patti Allen's National Provider Identifier (NPI) is 1659438489, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patti Allen's specialty?
- Patti Allen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Patti Allen located?
- Patti Allen's practice location on file with NPPES is 401 Old San Francisco Rd, Sunnyvale, CA 94086-6387.
- What is Patti Allen's phone number?
- The practice phone number listed in the NPPES registry for Patti Allen is (408) 730-4360.
- Is Patti Allen's NPI active?
- Yes — Patti Allen's NPI (1659438489) is active in the NPPES registry as of the last update on 2011-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.