What is Mark Stelle's NPI number?

Mark Stelle's National Provider Identifier (NPI) is 1699630996, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Stelle's specialty?

Mark Stelle is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).

Where is Mark Stelle located?

Mark Stelle's practice location on file with NPPES is 1301 Wonder World Dr, San Marcos, TX 78666-7533.

What is Mark Stelle's phone number?

The practice phone number listed in the NPPES registry for Mark Stelle is (512) 353-8979.

Does Mark Stelle accept Medicare?

Mark Stelle is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Mark Stelle's NPI active?

Yes — Mark Stelle's NPI (1699630996) is active in the NPPES registry as of the last update on 2026-01-23.

IndividualActiveAccepts Medicare

Mark Stelle, APRN

NPI 1699630996 · Family Nurse Practitioner · San Marcos, TX

Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Mark Stelle, APRN is a Family Nurse Practitioner provider in San Marcos, TX (NPI 1699630996).

Provider details

NPI number: 1699630996
Entity type: Individual
Primary specialty: Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Credential: APRN
Sex: Male
Sole proprietor: Yes
License: 1220613 (TX)

Specialties & taxonomies

Family Nurse PractitionerPrimary363LF0000XLicense 1220613 (TX)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Established profile(63/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
4 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

1301 Wonder World Dr

San Marcos, TX 78666-7533

Phone: (512) 353-8979

Street-level locationGet directions

More TX providers

Mailing address

6607 Brodie Ln Apt 816

Austin, TX 78745-4652

Additional practice locations (3)

6607 Brodie Ln Apt 816
Austin, TX 78745-4652
Phone: (512) 717-1617
5224 75th St Ste D
Lubbock, TX 79424-2525
Phone: (806) 712-1096
Fax: (806) 771-2093
600 N Union Ave
New Braunfels, TX 78130-4194
Phone: (830) 606-9111

Enumerated: 2025-12-18
Last updated: 2026-01-23
Certified: 2026-01-23

Frequently asked questions

What is Mark Stelle's NPI number?: Mark Stelle's National Provider Identifier (NPI) is 1699630996, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark Stelle's specialty?: Mark Stelle is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
Where is Mark Stelle located?: Mark Stelle's practice location on file with NPPES is 1301 Wonder World Dr, San Marcos, TX 78666-7533.
What is Mark Stelle's phone number?: The practice phone number listed in the NPPES registry for Mark Stelle is (512) 353-8979.
Does Mark Stelle accept Medicare?: Mark Stelle is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Mark Stelle's NPI active?: Yes — Mark Stelle's NPI (1699630996) is active in the NPPES registry as of the last update on 2026-01-23.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.