Michael Arnold, MD
NPI 1306005442 · Anatomic Pathology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Arnold, MD is a Anatomic Pathology Physician provider in Stanford, CA (NPI 1306005442).
Provider details
- NPI number
- 1306005442
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C209165 (CA)
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 tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 725 Welch RdPalo Alto, CA 94304-1601Phone: (650) 497-8000
Registry dates
- Enumerated
- 2008-06-04
- Last updated
- 2026-06-01
- Certified
- 2026-06-01
Frequently asked questions
- What is Michael Arnold's NPI number?
- Michael Arnold's National Provider Identifier (NPI) is 1306005442, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Arnold's specialty?
- Michael Arnold is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Arnold located?
- Michael Arnold's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Michael Arnold's phone number?
- The practice phone number listed in the NPPES registry for Michael Arnold is (650) 723-4000.
- Does Michael Arnold accept Medicare?
- Michael Arnold is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Arnold's NPI active?
- Yes — Michael Arnold's NPI (1306005442) is active in the NPPES registry as of the last update on 2026-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.