Gemma Th Ko,md. Inc.
NPI 1184633620 · Internal Medicine Physician · Pico Rivera, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gemma Th Ko,md. Inc. is a Internal Medicine Physician organization in Pico Rivera, CA (NPI 1184633620).
Provider details
- NPI number
- 1184633620
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Michele Guzman, Office Manager(562) 692-3388
- License
- G70866 (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
- 2006-08-05
- Last updated
- 2010-02-08
Frequently asked questions
- What is Gemma Th Ko,md. Inc.'s NPI number?
- Gemma Th Ko,md. Inc.'s National Provider Identifier (NPI) is 1184633620, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gemma Th Ko,md. Inc.?
- Gemma Th Ko,md. Inc. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gemma Th Ko,md. Inc. located?
- Gemma Th Ko,md. Inc.'s practice location on file with NPPES is 4511 Rosemead Blvd, Pico Rivera, CA 90660-2032.
- What is Gemma Th Ko,md. Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Gemma Th Ko,md. Inc. is (562) 692-3388.
- Does Gemma Th Ko,md. Inc. accept Medicare?
- Gemma Th Ko,md. Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Gemma Th Ko,md. Inc.?
- The authorized official listed on Gemma Th Ko,md. Inc.'s NPPES record is Michele Guzman, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gemma Th Ko,md. Inc.'s NPI active?
- Yes — Gemma Th Ko,md. Inc.'s NPI (1184633620) is active in the NPPES registry as of the last update on 2010-02-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.