Mark Udy, PA-C
NPI 1659405314 · Medical Physician Assistant · St George, UT
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Udy, PA-C is a Medical Physician Assistant provider in St George, UT (NPI 1659405314).
Provider details
- NPI number
- 1659405314
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA1599 (NV)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing 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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,748 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 | 755 | $109 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 602 | $77 |
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0482 | 116 | $195 |
| Injection of Trigger Points, 3 Or More Muscles20553 | 81 | $51 |
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0483 | 69 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 644 | 110 |
| Oxycodone Hcl | 464 | 69 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 411 | 76 |
| Tramadol Hcl | 260 | 46 |
| Gabapentin | 255 | 49 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 215 | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,445 across 60 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
Additional practice locations (1)
- 340 Falcon Ridge Pkwy Ste 603Mesquite, NV 89027-8852Phone: (702) 346-5037Fax: (702) 346-5036
Registry dates
- Enumerated
- 2007-03-15
- Last updated
- 2023-03-29
- Certified
- 2023-03-29
Frequently asked questions
- What is Mark Udy's NPI number?
- Mark Udy's National Provider Identifier (NPI) is 1659405314, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Udy's specialty?
- Mark Udy is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mark Udy located?
- Mark Udy's practice location on file with NPPES is 617 E Riverside Dr Ste 301, St George, UT 84790-8722.
- What is Mark Udy's phone number?
- The practice phone number listed in the NPPES registry for Mark Udy is (435) 216-7000.
- Does Mark Udy accept Medicare?
- Mark Udy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Udy's NPI active?
- Yes — Mark Udy's NPI (1659405314) is active in the NPPES registry as of the last update on 2023-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.