Jan Merin, MD
NPI 1225031321 · Internal Medicine Physician · Houston, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jan Merin, MD is a Internal Medicine Physician provider in Houston, TX (NPI 1225031321).
Provider details
- NPI number
- 1225031321
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 92-304 (NM)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 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
- 2005-05-23
- Last updated
- 2023-05-29
- Certified
- 2023-05-29
Frequently asked questions
- What is Jan Merin's NPI number?
- Jan Merin's National Provider Identifier (NPI) is 1225031321, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jan Merin's specialty?
- Jan Merin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jan Merin located?
- Jan Merin's practice location on file with NPPES is 1330 Wirt Rd Ste R, Houston, TX 77055-4901.
- What is Jan Merin's phone number?
- The practice phone number listed in the NPPES registry for Jan Merin is (346) 406-1730.
- Does Jan Merin accept Medicare?
- Jan Merin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jan Merin's NPI active?
- Yes — Jan Merin's NPI (1225031321) is active in the NPPES registry as of the last update on 2023-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.