Christopher Calkins, MD
NPI 1144809666 · Internal Medicine Physician · Stanford, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Calkins, MD is a Internal Medicine Physician provider in Stanford, CA (NPI 1144809666).
Provider details
- NPI number
- 1144809666
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% 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)
- 75 Francis StBoston, MA 02115-6110Phone: (617) 732-5775
Registry dates
- Enumerated
- 2021-04-02
- Last updated
- 2024-05-05
- Certified
- 2024-05-05
Frequently asked questions
- What is Christopher Calkins's NPI number?
- Christopher Calkins's National Provider Identifier (NPI) is 1144809666, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Calkins's specialty?
- Christopher Calkins is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Calkins located?
- Christopher Calkins's practice location on file with NPPES is 300 Pasteur Dr Rm G306, Stanford, CA 94305-2200.
- What is Christopher Calkins's phone number?
- The practice phone number listed in the NPPES registry for Christopher Calkins is (650) 723-5948.
- Does Christopher Calkins accept Medicare?
- Christopher Calkins is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Calkins's NPI active?
- Yes — Christopher Calkins's NPI (1144809666) is active in the NPPES registry as of the last update on 2024-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.