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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DARBY BROCK CRNP, FNP-C
NPI 1871442954
Nurse Practitioner in Allentown, PA

Active since January 22, 2026PECOS Enrolled
3151 WALBERT AVE, STE 302, ALLENTOWN, PA 18104(484) 526-6545 Get Directions Write a Review

NPPES record last updated: October 16, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 16, 2026, Jan 22, 2026 (2 updates tracked since 2026).

About Darby Brock Crnp, Fnp-c NPPES

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

DARBY BROCK CRNP, FNP-C (NPI 1871442954) is an individual nurse practitioner in Allentown, Pennsylvania, licensed in Pennsylvania (SP034967) and active in the NPI registry since January 2026. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1871442954
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameDARBY BROCKCredential: CRNP, FNP-C
Location Address3151 WALBERT AVE, STE 302Allentown, PA 18104-6042
Mailing Address3151 Walbert Ave, Ste 302Allentown, PA 18104-6042 · (856) 381-1928
Phone(484) 526-6545
Sole ProprietorYes
Medical School CMSOtherGraduated 2025
Enumeration DateJanuary 22, 2026
Last NPPES UpdateOctober 16, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 22, 2026
✔ NPI 1871442954 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in PA · SP034967
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
3151 WALBERT AVE, Allentown, PA 18104
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Darby Brock Crnp, Fnp-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9830656362
PECOS Enrollment IDI20260805000975
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 Darby Brock reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

St. Luke's Physician Group Inc.
0.1 mi
Gynecology
3420 WALBERT AVENUE, SUITE 100
Allentown, PA 18104
  • Reassigned Medicare billing, Pennsylvania enrollment
  • Medicare enrollment name: St Lukes Physician Group Inc
  • 2,851 clinicians in this Medicare group
NPI 1225528730 (610) 366-8555
Gslpg, Inc
30 mi
Specialist
100 PARAMOUNT BLVD
Orwigsburg, PA 17961
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 953 clinicians in this Medicare group
NPI 1366006702 (272) 639-1000

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 18104 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
$84.88 typical visit price
range $54.64 – $166.87
Typical copayment $21.22 (range $13.66 – $41.71)
Most-billed visit code 99203
Established Patient
$96.82 typical visit price
range $17.33 – $135.84
Typical copayment $24.20 (range $4.33 – $33.96)
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.

Other Providers at the Same Location NPPES

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

JACQUELINE CORY STOUDT
Physical Medicine & Rehabilitation (Sports Medicine)
3151 WALBERT AVE
ALLENTOWN, PA 18104
Lehigh County (484) 658-9100

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 Darby Brock's NPI number?

The NPI number for Darby Brock is 1871442954. It was assigned to this individual provider in the NPPES registry on January 22, 2026.

Where is Darby Brock located?

Darby Brock practices at 3151 Walbert Ave Ste 302, Allentown, PA 18104. The listed phone number is (484) 526-6545.

What is Darby Brock's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Darby Brock enrolled in Medicare?

Yes. Darby Brock is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Darby Brock's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Darby Brock reassigns Medicare benefits to 2 organizations: St. Luke's Physician Group Inc. (Allentown, PA) and Gslpg, Inc (Orwigsburg, PA). 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 Darby Brock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Darby Brock was last updated on October 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 days 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.