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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.

REGINA MARIA MACKEY M.D.
NPI 1710320411
Internal Medicine - Hospice and Palliative Medicine in Jacksonville, FL

Active since April 11, 2013PECOS EnrolledAccepts Medicare Assignment
4500 SAN PABLO RD S, JACKSONVILLE, FL 32224(904) 953-2000 Get Directions Write a Review

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

Record update history: Sep 16, 2026, Aug 18, 2020, Jul 31, 2019 and 3 more (6 updates tracked since 2017).

About Regina Maria Mackey M.d. NPPES

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

REGINA MARIA MACKEY M.D. (NPI 1710320411) is an individual hospice and palliative medicine provider in Jacksonville, Florida, licensed in Florida (ME184244) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Hospital Rochester, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1710320411
Entity TypeIndividualFemale
Primary Taxonomy207RH0002X
Provider Legal NameREGINA MARIA MACKEYCredential: M.D.
Location Address4500 SAN PABLO RD SJacksonville, FL 32224-1865
Mailing AddressPo Box 860912qMinneapolis, MN 55486-0912
Phone(904) 953-2000
Sole ProprietorNo
Medical School CMSOtherGraduated 1992
Enumeration DateApril 11, 2013
Last NPPES UpdateSeptember 16, 20266 updates tracked since enumeration
NPPES CertifiedSeptember 16, 2026
✔ NPI 1710320411 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RH0002X
Licenses✔ Licensed in FL · ME184244✔ Licensed in MN · 62211
Definition
An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
4500 SAN PABLO RD S, Jacksonville, FL 32224
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Other Names 1

Other Name (5)Regina Maria Silva Md

Secondary Practice Locations 2

Location 1200 1st St SWRochester, MN 55905-0001 · Phone (507) 284-2511 · Fax (507) 422-0985
Location 211234 Anderson Street, GME Office Westerly, Suite 'C'Loma Linda, CA 92354-2804 · Phone (909) 558-6688

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Florida Blue (BlueCross BlueShield FL).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

Regina Maria Mackey 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 ID7214234772
PECOS Enrollment IDI20170621002946
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 Reassignment

Medicare enrollment records show Regina Mackey reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mayo Clinic
1,125 mi
Infectious Disease
200 1ST ST SW
Rochester, MN 55905
  • Reassigned Medicare billing, Minnesota enrollment
  • 6,534 clinicians in this Medicare group
NPI 1114343860 (507) 284-2511

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 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
77 services41 patients
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.
18 services11 patients

Hospital Affiliations CMS Care Compare

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

Mayo Clinic Hospital Rochester

Acute Care Hospitals · Rochester, MN
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number240010
Location1216 Second Street SouthwestRochester, MN 55902 · Olmsted County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

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

KATHERINE L WALSH PA-C/MPH
Physician Assistant
4500 SAN PABLO RD S
JACKSONVILLE, FL 32224
Duval County (904) 953-2000
DR. JAMI ANN ROTHE KINNUCAN M.D.
Internal Medicine (Gastroenterology)
4500 SAN PABLO RD S
JACKSONVILLE, FL 32224
Duval County (904) 953-2000
GLENN SHI MD
Orthopaedic Surgery
4500 SAN PABLO RD S
JACKSONVILLE, FL 32224
Duval County (904) 953-2000
MICHELLE TULANG MD
Internal Medicine
4500 SAN PABLO RD S
JACKSONVILLE, FL 32224
Duval County (904) 953-2000
RICARDO PAGAN MD
Hospitalist
4500 SAN PABLO RD S
JACKSONVILLE, FL 32224
Duval County (904) 953-2000
CRYSTAL LYNN CRNA
Nurse Anesthetist, Certified Registered
4500 SAN PABLO RD S
JACKSONVILLE, FL 32224
Duval County (904) 953-2000
LAUREN E FREED CRNA
Nurse Anesthetist, Certified Registered
4500 SAN PABLO RD S
JACKSONVILLE, FL 32224
Duval County (904) 953-2000
MRS. MELINA VOLNER SOMMESE PA-C
Physician Assistant
4500 SAN PABLO RD S
JACKSONVILLE, FL 32224
Duval County (904) 953-2594

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 Regina Mackey's NPI number?

The NPI number for Regina Mackey is 1710320411. It was assigned to this individual provider in the NPPES registry on April 11, 2013. The provider is also known as Regina Maria Silva MD.

Where is Regina Mackey located?

Regina Mackey practices at 4500 San Pablo Rd S, Jacksonville, FL 32224. The listed phone number is (904) 953-2000.

What is Regina Mackey's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.

Is Regina Mackey enrolled in Medicare?

Yes. Regina Mackey 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 organization bills Medicare for Regina Mackey's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Regina Mackey reassigns Medicare benefits to Mayo Clinic (Rochester, MN). The 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 Regina Mackey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Regina Mackey accept?

Health plans from Florida Blue (BlueCross BlueShield FL) list Regina Mackey 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 Regina Mackey affiliated with any hospitals?

According to CMS data, Regina Mackey is affiliated with Mayo Clinic Hospital Rochester.

When was this NPI record last updated?

The NPPES record for Regina Mackey was last updated on September 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 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.