IndividualActive
Monica Guillen
NPI 1932921244 · Specialist · Union City, CA
Monica Guillen is a Specialist provider in Union City, CA (NPI 1932921244).
Provider details
- NPI number
- 1932921244
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Other Service Providers
Profile Score
Basic profile(49/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% 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
33456 Alvarado Niles Rd
Union City, CA 94587-3110
Phone: (510) 675-0600
Street-level locationGet directions
Mailing address
5674 Stoneridge Dr Ste 207
Pleasanton, CA 94588-8592
Registry dates
- Enumerated
- 2024-10-28
- Last updated
- 2024-10-28
- Certified
- 2024-10-28
Frequently asked questions
- What is Monica Guillen's NPI number?
- Monica Guillen's National Provider Identifier (NPI) is 1932921244, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Monica Guillen's specialty?
- Monica Guillen is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Monica Guillen located?
- Monica Guillen's practice location on file with NPPES is 33456 Alvarado Niles Rd, Union City, CA 94587-3110.
- What is Monica Guillen's phone number?
- The practice phone number listed in the NPPES registry for Monica Guillen is (510) 675-0600.
- Is Monica Guillen's NPI active?
- Yes — Monica Guillen's NPI (1932921244) is active in the NPPES registry as of the last update on 2024-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.