What is Rebecca Long's NPI number?

Rebecca Long's National Provider Identifier (NPI) is 1639007172, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Rebecca Long's specialty?

Rebecca Long is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Rebecca Long located?

Rebecca Long's practice location on file with NPPES is 150 Alamos Rd, Portola Valley, CA 94028-7702.

What is Rebecca Long's phone number?

The practice phone number listed in the NPPES registry for Rebecca Long is (650) 255-7699.

Is Rebecca Long's NPI active?

Yes — Rebecca Long's NPI (1639007172) is active in the NPPES registry as of the last update on 2026-05-13.

IndividualActive

Rebecca Long

NPI 1639007172 · Internal Medicine Physician · Portola Valley, CA

Rebecca Long is a Internal Medicine Physician provider in Portola Valley, CA (NPI 1639007172).

Provider details

NPI number: 1639007172
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Sex: Female
Sole proprietor: Yes
License: A61465 (CA)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense A61465 (CA)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(53/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

150 Alamos Rd

Portola Valley, CA 94028-7702

Phone: (650) 255-7699

Street-level locationGet directions

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Mailing address