Isabel Tejeda, M.D.
NPI 1326181165 · Adult Medicine Physician · Union City, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isabel Tejeda, M.D. is a Adult Medicine Physician provider in Union City, CA (NPI 1326181165).
Provider details
- NPI number
- 1326181165
- Entity type
- Individual
- Primary specialty
- Adult Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A88853 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 72 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 327 | 129 |
| Lisinopril | 179 | 67 |
| Amlodipine Besylate | 179 | 65 |
| Levothyroxine Sodium | 146 | 52 |
| Famotidine | 131 | 51 |
| Losartan Potassium | 123 | 49 |
| Glipizide | 111 | 40 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-14
- Last updated
- 2021-12-09
Frequently asked questions
- What is Isabel Tejeda's NPI number?
- Isabel Tejeda's National Provider Identifier (NPI) is 1326181165, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isabel Tejeda's specialty?
- Isabel Tejeda is listed in the NPPES registry with a primary specialty of Adult Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Isabel Tejeda located?
- Isabel Tejeda's practice location on file with NPPES is 3553 Whipple Rd, Union City, CA 94587-1507.
- What is Isabel Tejeda's phone number?
- The practice phone number listed in the NPPES registry for Isabel Tejeda is (510) 675-4668.
- Does Isabel Tejeda accept Medicare?
- Isabel Tejeda is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isabel Tejeda's NPI active?
- Yes — Isabel Tejeda's NPI (1326181165) is active in the NPPES registry as of the last update on 2021-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.