Karen Nicholson, M.D., M.P.H.
NPI 1679668297 · Public Health & General Preventive Medicine Physician · San Marcos, CA
Karen Nicholson, M.D., M.P.H. is a Public Health & General Preventive Medicine Physician provider in San Marcos, CA (NPI 1679668297).
Provider details
- NPI number
- 1679668297
- Entity type
- Individual
- Primary specialty
- Public Health & General Preventive Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.P.H.
- Sex
- Female
- Sole proprietor
- No
- License
- G74856 (CA)
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
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
Mailing address
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karen Nicholson's NPI number?
- Karen Nicholson's National Provider Identifier (NPI) is 1679668297, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Nicholson's specialty?
- Karen Nicholson is listed in the NPPES registry with a primary specialty of Public Health & General Preventive Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Nicholson located?
- Karen Nicholson's practice location on file with NPPES is 333 S. Twin Oaks Valley Rd, San Marcos, CA 92096-0001.
- What is Karen Nicholson's phone number?
- The practice phone number listed in the NPPES registry for Karen Nicholson is (760) 750-4920.
- Is Karen Nicholson's NPI active?
- Yes — Karen Nicholson's NPI (1679668297) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.