1. Home
  2. Directory
  3. California
  4. Lancaster
  5. Nurse Practitioner
  6. NPI Profile

MAY THERESE RONCI AGACNP-BC
NPI 1255993531
Nurse Practitioner - Gerontology in Lancaster, CA

Active since July 08, 2019PECOS EnrolledAccepts Medicare Assignment
42442 10TH ST W STE E, LANCASTER, CA 93534(661) 951-1146(661) 951-9882 Get Directions Write a Review

NPPES record last updated: December 23, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 23, 2025, Feb 28, 2021, Jul 8, 2019 (3 updates tracked since 2019).

About May Therese Ronci Agacnp-bc NPPES

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

MAY THERESE RONCI AGACNP-BC (NPI 1255993531) is an individual gerontology provider in Lancaster, California, licensed in California (95012096) and active in the NPI registry since July 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1255993531
Entity TypeIndividualFemale
Primary Taxonomy363LG0600X
Provider Legal NameMAY THERESE RONCICredential: AGACNP-BC
Location Address42442 10TH ST W STE ELancaster, CA 93534-7067
Mailing Address41529 Poplar CirPalmdale, CA 93551-2814 · (661) 478-2302
Phone(661) 951-1146
Fax(661) 951-9882
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateJuly 8, 2019
Last NPPES UpdateDecember 23, 20253 updates tracked since enumeration
NPPES CertifiedDecember 23, 2025
✔ NPI 1255993531 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyNurse Practitioner · GerontologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LG0600X
License✔ Licensed in CA · 95012096
Also ListedEmergency Medicine · Hospice and Palliative MedicineTaxonomy 207PH0002X · License 95012096 (CA)
Also ListedHospitalistTaxonomy 208M00000X · License 95012096 (CA)
Also ListedNurse PractitionerTaxonomy 363L00000X · License 95012096 (CA)
42442 10TH ST W STE E, Lancaster, CA 93534
Open in Google Maps ↗

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

May Therese Ronci Agacnp-bc 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 ID9335479302
PECOS Enrollment IDI20190918001945
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 May Ronci reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dr Kamran Parsa Inc
0.7 mi
Neurological Surgery
1120 W AVENUE M4
Palmdale, CA 93551
  • Reassigned Medicare billing, California enrollment
  • 24 clinicians in this Medicare group
NPI 1780066373 (661) 480-2377
Vitas Health Services Of California Inc
41 mi
Hospice and Palliative Medicine
1343 N GRAND AVE, SUITE 100
Covina, CA 91724
  • Reassigned Medicare billing, California enrollment
  • 18 clinicians in this Medicare group
NPI 1780973024 (877) 868-4827

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 2

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
58 services32 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
43 services42 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93534 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

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 May Ronci's NPI number?

The NPI number for May Ronci is 1255993531. It was assigned to this individual provider in the NPPES registry on July 8, 2019.

Where is May Ronci located?

May Ronci practices at 42442 10th St W Ste E, Lancaster, CA 93534. The listed phone number is (661) 951-1146.

What is May Ronci's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.

Is May Ronci enrolled in Medicare?

Yes. May Ronci 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 May Ronci's services?

According to the CMS Revalidation Reassignment List (October 2026 release), May Ronci reassigns Medicare benefits to 2 organizations: Dr Kamran Parsa Inc (Palmdale, CA) and Vitas Health Services Of California Inc (Covina, CA). 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 May Ronci'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 May Ronci was last updated on December 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.