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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.

DR. FREDERIC BAKER MILLS IV MD, MS
NPI 1487232567
Orthopaedic Surgery in Agana Heights, GU

Active since March 31, 2021PECOS Enrolled
U.S. NAVAL HOSPITAL GUAM, BLDG 50 FARENHOLT AVE, AGANA HEIGHTS, GU 96910(671) 344-9340 Get Directions Write a Review

NPPES record last updated: September 1, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 1, 2026, Mar 31, 2021 (2 updates tracked since 2021).

About Dr. Frederic Baker Mills Iv Md, Ms NPPES

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

DR. FREDERIC BAKER MILLS IV MD, MS (NPI 1487232567) is an individual orthopaedic surgery provider in Agana Heights, Guam, licensed in North Carolina (2026-04553) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1487232567
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameDR. FREDERIC BAKER MILLS IVCredential: MD, MS
Location AddressU.S. NAVAL HOSPITAL GUAM, BLDG 50 FARENHOLT AVEAgana Heights, GU 96910
Mailing AddressPsc 455 Box 208Fpo, AP 96540-0003 · (455) 208-9654
Phone(671) 344-9340
Sole ProprietorNo
Enumeration DateMarch 31, 2021
Last NPPES UpdateSeptember 1, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 1, 2026
✔ NPI 1487232567 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in NC · 2026-04553
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Frederic Baker Mills Iv Md, Ms is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96910 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
$92.50 typical visit price
range $60.53 – $180.05
Typical copayment $23.12 (range $15.13 – $45.01)
Most-billed visit code 99203
Established Patient
$74.92 typical visit price
range $20.09 – $147.56
Typical copayment $18.73 (range $5.02 – $36.89)
Most-billed visit code 99213
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 20

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

DR. EBENEZER ANIAGYEI PHARM.D
Pharmacist (Pharmacotherapy)
U.S. NAVAL HOSPITAL GUAM, FAREBHOLT AVE, BLDG 50
AGANA HEIGHTS, GU 96910
Guam (671) 344-9340
JAMIE LYNN FITCH M.D.
Surgery (Surgical Critical Care)
U.S. NAVAL HOSPITAL GUAM, FARENHOLT AVE, BLDG 50
AGANA HEIGHTS, GU 96910
Guam (671) 344-9235
MR. SHEEHAN MURPHY BYRNE LISW
Social Worker (Clinical)
U.S. NAVAL HOSPITAL GUAM, FARENHOLT AVE BLDG 50
AGANA HEIGHTS, GU 96910
Guam (671) 344-9463
RODGER BESLEY CARTER III DO
Family Medicine
U.S. NAVAL HOSPITAL GUAM, BLDG 50, FARENHOLT AVENUE
AGANA HEIGHTS, GU 96910
Guam (671) 344-9340
DR. ASHLEY ANN MARTIN DDS
Dentist
U.S. NAVAL HOSPITAL GUAM, BLDG 50, FARENHOLT AVENUE
AGANA HEIGHTS, GU 96910
Guam (671) 344-9340
DR. ELIZABETH GRACE CONLON MD
Family Medicine
U.S. NAVAL HOSPITAL GUAM, FARENHOLT AVE, BLDG 50
AGANA HEIGHTS, GU 96910
Guam (671) 344-9315
JUSTIN MICHAEL LODER PA-C
Physician Assistant
U.S. NAVAL HOSPITAL GUAM, FARENHOLT AVE, BLDG 50
AGANA HEIGHTS, GU 96910
Guam (671) 344-9315
MALLORI MARIE WILSON
Emergency Medicine
U.S. NAVAL HOSPITAL GUAM
AGANA HEIGHTS, GU 96910
Guam (671) 344-9340

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 Frederic Mills's NPI number?

The NPI number for Frederic Mills is 1487232567. It was assigned to this individual provider in the NPPES registry on March 31, 2021.

Where is Frederic Mills located?

Frederic Mills practices at U.S. Naval Hospital Guam Bldg 50 Farenholt Ave, Agana Heights, GU 96910. The listed phone number is (671) 344-9340.

What is Frederic Mills's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Frederic Mills enrolled in Medicare?

Yes. Frederic Mills is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Frederic Mills was last updated on September 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.