Mark a Johnson, MD, PA
NPI 1558381376 · Surgery Physician · Conroe, TX
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark a Johnson, MD, PA is a Surgery Physician organization in Conroe, TX (NPI 1558381376).
Provider details
- NPI number
- 1558381376
- Entity type
- Organization
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mark Johnson, Porvider(936) 271-0665
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
- 2006-07-21
- Last updated
- 2022-11-23
- Certified
- 2022-11-23
Frequently asked questions
- What is Mark a Johnson, MD, PA's NPI number?
- Mark a Johnson, MD, PA's National Provider Identifier (NPI) is 1558381376, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark a Johnson, MD, PA?
- Mark a Johnson, MD, PA is classified in the NPPES registry as Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mark a Johnson, MD, PA located?
- Mark a Johnson, MD, PA's practice location on file with NPPES is 100 Medical Center Blvd Ste 100, Conroe, TX 77304-2821.
- What is Mark a Johnson, MD, PA's phone number?
- The practice phone number listed in the NPPES registry for Mark a Johnson, MD, PA is (936) 271-0665.
- Does Mark a Johnson, MD, PA accept Medicare?
- Mark a Johnson, MD, PA 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 a Johnson, MD, PA?
- The authorized official listed on Mark a Johnson, MD, PA's NPPES record is Mark Johnson, Porvider. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark a Johnson, MD, PA's NPI active?
- Yes — Mark a Johnson, MD, PA's NPI (1558381376) is active in the NPPES registry as of the last update on 2022-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.