Mark R. Klein, D.O. & Associates, PLLC
NPI 1285809988 · Family Medicine Physician · Gainesville, TX
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark R. Klein, D.O. & Associates, PLLC is a Family Medicine Physician organization in Gainesville, TX (NPI 1285809988).
Provider details
- NPI number
- 1285809988
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mark Klein, Owner(940) 665-9863
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
18 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
- 2008-04-24
- Last updated
- 2008-04-24
Frequently asked questions
- What is Mark R. Klein, D.O. & Associates, PLLC's NPI number?
- Mark R. Klein, D.O. & Associates, PLLC's National Provider Identifier (NPI) is 1285809988, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark R. Klein, D.O. & Associates, PLLC?
- Mark R. Klein, D.O. & Associates, PLLC is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark R. Klein, D.O. & Associates, PLLC located?
- Mark R. Klein, D.O. & Associates, PLLC's practice location on file with NPPES is 1625 N. Grand Ave, Gainesville, TX 76240.
- What is Mark R. Klein, D.O. & Associates, PLLC's phone number?
- The practice phone number listed in the NPPES registry for Mark R. Klein, D.O. & Associates, PLLC is (940) 665-9863.
- Does Mark R. Klein, D.O. & Associates, PLLC accept Medicare?
- Mark R. Klein, D.O. & Associates, PLLC 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 Mark R. Klein, D.O. & Associates, PLLC?
- The authorized official listed on Mark R. Klein, D.O. & Associates, PLLC's NPPES record is Mark Klein, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark R. Klein, D.O. & Associates, PLLC's NPI active?
- Yes — Mark R. Klein, D.O. & Associates, PLLC's NPI (1285809988) is active in the NPPES registry as of the last update on 2008-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.