Mark Tong, M.D.
NPI 1851467880 · Family Medicine Physician · Placerville, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Tong, M.D. is a Family Medicine Physician provider in Placerville, CA (NPI 1851467880).
Provider details
- NPI number
- 1851467880
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G80662 (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
- 2006-11-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Tong's NPI number?
- Mark Tong's National Provider Identifier (NPI) is 1851467880, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Tong's specialty?
- Mark Tong is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Tong located?
- Mark Tong's practice location on file with NPPES is 1000 Fowler Way, Placerville, CA 95667-5738.
- What is Mark Tong's phone number?
- The practice phone number listed in the NPPES registry for Mark Tong is (530) 344-9200.
- Does Mark Tong accept Medicare?
- Mark Tong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Tong's NPI active?
- Yes — Mark Tong's NPI (1851467880) 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.