Mark Cullen, MD
NPI 1215919956 · Occupational Medicine Physician · Stanford, CA
Mark Cullen, MD is a Occupational Medicine Physician provider in Stanford, CA (NPI 1215919956).
Provider details
- NPI number
- 1215919956
- Entity type
- Individual
- Primary specialty
- Occupational Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 020060 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2005-11-17
- Last updated
- 2009-05-14
Frequently asked questions
- What is Mark Cullen's NPI number?
- Mark Cullen's National Provider Identifier (NPI) is 1215919956, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Cullen's specialty?
- Mark Cullen is listed in the NPPES registry with a primary specialty of Occupational Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Cullen located?
- Mark Cullen's practice location on file with NPPES is 251 Campus Dr, Stanford, CA 94305-5101.
- What is Mark Cullen's phone number?
- The practice phone number listed in the NPPES registry for Mark Cullen is (650) 721-6209.
- Is Mark Cullen's NPI active?
- Yes — Mark Cullen's NPI (1215919956) is active in the NPPES registry as of the last update on 2009-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.