Steven Mack, PAC
NPI 1578550091 · Medical Physician Assistant · Yakima, WA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Mack, PAC is a Medical Physician Assistant provider in Yakima, WA (NPI 1578550091).
Provider details
- NPI number
- 1578550091
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PAC
- Sex
- Male
- Sole proprietor
- No
- License
- 025211PA10003745 (WA)
Specialties & taxonomies
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
20 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
794 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) |
|---|---|---|
| Manual Urinalysis Test With Examination Using Microscope, Non-Automated81000 | 197 | $4 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 195 | $80 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 139 | $113 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 105 | $12 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 91 | $51 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 89 | 43 |
| Cephalexin | 68 | 57 |
| Trospium Chloride | 62 | 21 |
| Methenamine Hippurate | 36 | 13 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 31 | 27 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 29 | 11 |
| Vibegronbrand: Gemtesa | 25 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$238 across 6 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
- 2005-09-29
- Last updated
- 2016-06-02
Frequently asked questions
- What is Steven Mack's NPI number?
- Steven Mack's National Provider Identifier (NPI) is 1578550091, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Mack's specialty?
- Steven Mack is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Steven Mack located?
- Steven Mack's practice location on file with NPPES is 2500 Racquet Ln, Yakima, WA 98902-6114.
- What is Steven Mack's phone number?
- The practice phone number listed in the NPPES registry for Steven Mack is (509) 249-3900.
- Does Steven Mack accept Medicare?
- Steven Mack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Mack's NPI active?
- Yes — Steven Mack's NPI (1578550091) is active in the NPPES registry as of the last update on 2016-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.