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MICHAEL DARLEY M.D.
NPI 1538458146
Internal Medicine - Rheumatology in Provo, UT

Active since April 04, 2011PECOS EnrolledAccepts Medicare Assignment
1055 N 300 W STE 303, PROVO, UT 84604(801) 852-9600(801) 852-9695 Get Directions Write a Review

NPPES record last updated: September 8, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 8, 2025, Mar 28, 2016 (2 updates tracked since 2016).

About Michael Darley M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL DARLEY M.D. (NPI 1538458146) is an individual rheumatology provider in Provo, Utah, licensed in Utah (8436520-1205) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with Utah Valley Hospital, and maintains a secondary practice location in Springville.

NPPES Registry Identity

NPI1538458146
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameMICHAEL DARLEYCredential: M.D.
Location Address1055 N 300 W STE 303Provo, UT 84604-3373
Mailing Address1055 N 300 W Ste 303Provo, UT 84604-3373 · (801) 852-9600 · Fax (801) 852-9695
Phone(801) 852-9600
Fax(801) 852-9695
Sole ProprietorYes
Medical School CMSSaint Louis University School Of MedicineGraduated 2011
Enumeration DateApril 4, 2011
Last NPPES UpdateSeptember 8, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 8, 2025
✔ NPI 1538458146 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in UT · 8436520-1205
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
1055 N 300 W STE 303, Provo, UT 84604
Open in Google Maps ↗

Secondary Practice Location 1

Location 1771 W 450 SSpringville, UT 84663-2384 · Phone (801) 852-9600 · Fax (801) 852-9695

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Imperial Health Plan of the Southwest, Inc., Molina Healthcare and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael Darley M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5294951455
PECOS Enrollment IDI20160517000333
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Michael Darley reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Peak Ent Associates
Same address
Otolaryngology/Facial Plastic Surgery
1055 N 300 W, SUITE 401
Provo, UT 84604
  • Reassigned Medicare billing, Utah enrollment
  • 45 clinicians in this Medicare group
NPI 1346489036 (801) 357-7499
Michael Darley MD Rheumatologist PLLC
Rheumatology
771 W 450 S
Springville, UT 84663
  • Reassigned Medicare billing, Utah enrollment
NPI 1710867817 (801) 852-9600

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
363 services176 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
52 services14 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
52 services28 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
49 services22 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
24 services24 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
13 services13 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Utah Valley Hospital

Acute Care Hospitals · Provo, UT
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number460001
Location1034 North 500 WestProvo, UT 84604 · Utah County
Emergency services Birthing friendly

Castleview Hospital

Acute Care Hospitals · Price, UT
4/5 CMS rating
OwnershipProprietary
CMS Certification Number460011
Location300 North Hospital DrivePrice, UT 84501 · Carbon County
Emergency services Birthing friendly

American Fork Hospital

Acute Care Hospitals · American Fork, UT
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number460023
Location170 North 1100 EastAmerican Fork, UT 84003 · Utah County
Emergency services Birthing friendly

Holy Cross Hospital-Jordan Valley

Acute Care Hospitals · West Jordan, UT
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number460051
Location3580 West 9000 SouthWest Jordan, UT 84088 · Salt Lake County
Emergency services Birthing friendly

Spanish Fork Hospital

Acute Care Hospitals · Spanish Fork, UT
OwnershipVoluntary non-profit - Private
CMS Certification Number460062
Location765 East Market Place DriveSpanish Fork, UT 84660 · Utah County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 84604 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$125.70 typical visit price
range $54.34 – $166.03
Typical copayment $31.42 (range $13.58 – $41.50)
Most-billed visit code 99204
Established Patient
$96.35 typical visit price
range $17.23 – $135.20
Typical copayment $24.08 (range $4.30 – $33.80)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
71%124 patients3/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

UTAH VALLEY OBSTETRICAL ULTRA SOUND
Radiologic Technologist (Sonography)
1055 N 300 W STE 303
PROVO, UT 84604
Utah County (801) 357-7377
MRS. LINDSEY MARIE HOFFMANN P.A.-C
Physician Assistant (Medical)
1055 N 300 W STE 303
PROVO, UT 84604
Utah County (801) 357-7377
DR. IAN JAMES OROZCO MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1055 N 300 W STE 303
PROVO, UT 84604
Utah County (801) 356-1300
THYROID INSTITUTE OF UTAH
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1055 N 300 W STE 303
PROVO, UT 84604
Utah County (801) 356-1300

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Darley's NPI number?

The NPI number for Michael Darley is 1538458146. It was assigned to this individual provider in the NPPES registry on April 4, 2011.

Where is Michael Darley located?

Michael Darley practices at 1055 N 300 W Ste 303, Provo, UT 84604. The listed phone number is (801) 852-9600.

What is Michael Darley's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Michael Darley enrolled in Medicare?

Yes. Michael Darley is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Michael Darley's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Darley reassigns Medicare benefits to 2 organizations: Peak Ent Associates (Provo, UT) and Michael Darley MD Rheumatologist PLLC (Springville, UT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Darley's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Darley accept?

Health plans from BridgeSpan Health Company, Imperial Health Plan of the Southwest, Inc., Molina Healthcare, Regence BlueCross BlueShield of Utah and Select Health and 1 other insurer list Michael Darley as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Michael Darley affiliated with any hospitals?

According to CMS data, Michael Darley is affiliated with Utah Valley Hospital, Castleview Hospital, American Fork Hospital, Holy Cross Hospital-Jordan Valley and Spanish Fork Hospital.

When was this NPI record last updated?

The NPPES record for Michael Darley was last updated on September 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.