Marietta Marzan-Tan, MD
NPI 1336127372 · Obstetrics & Gynecology Physician · Bakersfield, CA
Marietta Marzan-Tan, MD is a Obstetrics & Gynecology Physician provider in Bakersfield, CA (NPI 1336127372).
Provider details
- NPI number
- 1336127372
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A32889 (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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 300 Old River RdSte 200Bakersfield, CA 93311Phone: (661) 663-4800Fax: (661) 663-4871
Registry dates
- Enumerated
- 2006-01-09
- Last updated
- 2022-07-21
Frequently asked questions
- What is Marietta Marzan-Tan's NPI number?
- Marietta Marzan-Tan's National Provider Identifier (NPI) is 1336127372, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marietta Marzan-Tan's specialty?
- Marietta Marzan-Tan is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Marietta Marzan-Tan located?
- Marietta Marzan-Tan's practice location on file with NPPES is 100 Old River Rd, Bakersfield, CA 93311-8823.
- What is Marietta Marzan-Tan's phone number?
- The practice phone number listed in the NPPES registry for Marietta Marzan-Tan is (661) 663-4800.
- Is Marietta Marzan-Tan's NPI active?
- Yes — Marietta Marzan-Tan's NPI (1336127372) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.