Stephen Mack, APRN-CNP; PMHNP-C
NPI 1245352756 · Family Nurse Practitioner · Katy, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Mack, APRN-CNP; PMHNP-C is a Family Nurse Practitioner provider in Katy, TX (NPI 1245352756).
Provider details
- NPI number
- 1245352756
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN-CNP; PMHNP-C
- Sex
- Male
- Sole proprietor
- Yes
- License
- 9319 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Chiropractic Providers
Chiropractic Providers
Chiropractic Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
103 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 35 | $109 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 21 | $140 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 18 | $41 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $76 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 12 | $12 |
Typical Medicare-allowed amounts for these services range $12–$140 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Diazepam | 349 | 93 |
| Zolpidem Tartrate | 286 | 55 |
| Duloxetine Hcl | 276 | 77 |
| Trazodone Hcl | 233 | 71 |
| Clonazepam | 228 | 59 |
| Alprazolam | 223 | 49 |
| Olanzapine/Samidorphan Malatebrand: Lybalvi |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,200 across 110 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-04
- Last updated
- 2023-08-31
- Certified
- 2023-08-31
Frequently asked questions
- What is Stephen Mack's NPI number?
- Stephen Mack's National Provider Identifier (NPI) is 1245352756, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Mack's specialty?
- Stephen Mack is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephen Mack located?
- Stephen Mack's practice location on file with NPPES is 21613 Provincial Blvd, Katy, TX 77450-6506.
- What is Stephen Mack's phone number?
- The practice phone number listed in the NPPES registry for Stephen Mack is (713) 777-9900.
- Does Stephen Mack accept Medicare?
- Stephen Mack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Mack's NPI active?
- Yes — Stephen Mack's NPI (1245352756) is active in the NPPES registry as of the last update on 2023-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.