Michael Darley, M.D.
NPI 1538458146 · Rheumatology Physician · Provo, UT
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Darley, M.D. is a Rheumatology Physician provider in Provo, UT (NPI 1538458146).
Provider details
- NPI number
- 1538458146
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 8436520-1205 (UT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 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
553 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 | 363 | $120 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 52 | $13 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 52 | $172 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 49 | $9 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 24 | $159 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 398 | 126 |
| Hydroxychloroquine Sulfate | 285 | 89 |
| Prednisone | 250 | 85 |
| Celecoxib | 187 | 72 |
| Leflunomide | 125 | 36 |
| Gabapentin | 102 | 30 |
| Duloxetine Hcl | 98 | 32 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,182 across 168 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)
- 771 W 450 SSpringville, UT 84663-2384Phone: (801) 852-9600Fax: (801) 852-9695
Registry dates
- Enumerated
- 2011-04-04
- Last updated
- 2025-09-08
- Certified
- 2025-09-08
Frequently asked questions
- What is Michael Darley's NPI number?
- Michael Darley's National Provider Identifier (NPI) is 1538458146, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Darley's specialty?
- Michael Darley is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Darley located?
- Michael Darley's practice location on file with NPPES is 1055 N 300 W Ste 303, Provo, UT 84604-3373.
- What is Michael Darley's phone number?
- The practice phone number listed in the NPPES registry for Michael Darley is (801) 852-9600.
- Does Michael Darley accept Medicare?
- Michael Darley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Darley's NPI active?
- Yes — Michael Darley's NPI (1538458146) is active in the NPPES registry as of the last update on 2025-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.