1. Home
  2. Directory
  3. California
  4. Fallbrook
  5. Obstetrics Gynecology
  6. NPI Profile

DR. JOHN D NGUYEN M.D.
NPI 1306078522
Obstetrics & Gynecology in Fallbrook, CA

Active since August 21, 2009PECOS Enrolled
1328 S MISSION RD, FALLBROOK, CA 92028(760) 451-4752 Get Directions Write a Review

NPPES record last updated: April 26, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. John D Nguyen M.d. NPPES

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

DR. JOHN D NGUYEN M.D. (NPI 1306078522) is an individual obstetrics & gynecology provider in Fallbrook, California, licensed in California (A109246) and active in the NPI registry since August 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306078522
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameDR. JOHN D NGUYENCredential: M.D.
Location Address1328 S MISSION RDFallbrook, CA 92028-4006
Mailing Address1328 S Mission RdFallbrook, CA 92028-4006 · (760) 451-4752
Phone(760) 451-4752
Sole ProprietorNo
Enumeration DateAugust 21, 2009
Last NPPES UpdateApril 26, 2013
✔ NPI 1306078522 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · A109246
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1328 S MISSION RD, Fallbrook, CA 92028
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 (PECOS)

Dr. John D Nguyen M.d. 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.

Medicare Billing Reassignments

2

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

Eagle Butte Indian Health Service Hospital
1,171 mi
Public Health or Welfare
24276 166TH STREET, AIRPORT ROAD
Eagle Butte, SD 57625
  • Reassigned Medicare billing, Texas enrollment
  • 282 clinicians in this Medicare group
NPI 1558395848 (605) 964-7724
Lower Brule Health Center Ihs
1,203 mi
Clinic/Center
601 GALL STREET
Lower Brule, SD 57548
  • Reassigned Medicare billing, Texas enrollment
  • 8 clinicians in this Medicare group
NPI 1881719425 (605) 473-5526

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 92028 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
$140.22 typical visit price
range $62.10 – $184.71
Typical copayment $35.05 (range $15.52 – $46.17)
Most-billed visit code 99204
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
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 9

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

ANTHONY MILLIRON MD
Family Medicine
1328 S MISSION RD
FALLBROOK, CA 92028
San Diego County (760) 451-4720
GORAN CVIJANOVIC MD
Internal Medicine
1328 S MISSION RD
FALLBROOK, CA 92028
San Diego County (760) 451-4720
COMMUNITY HEALTH SYSTEMS, INC.
Obstetrics & Gynecology
1328 S MISSION RD
FALLBROOK, CA 92028
San Diego County (760) 451-4730
WENDY VU M.D.
Pediatrics
1328 S MISSION RD
FALLBROOK, CA 92028
San Diego County (760) 451-4720
DR. MEGAN MARIE CLAPP MD
Pediatrics
1328 S MISSION RD
FALLBROOK, CA 92028
San Diego County (760) 451-4720
GANIAT A GBADEBO NP
Nurse Practitioner
1328 S MISSION RD
FALLBROOK, CA 92028
San Diego County (760) 451-4720
CLAUDINE M VOLKART RN
Registered Nurse (Community Health)
1328 S MISSION RD
FALLBROOK, CA 92028
San Diego County (760) 451-4720
ELIZABETH NICOLAS DDS
Dentist
1328 S MISSION RD
FALLBROOK, CA 92028
San Diego County (760) 451-4720

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 John Nguyen's NPI number?

The NPI number for John Nguyen is 1306078522. It was assigned to this individual provider in the NPPES registry on August 21, 2009.

Where is John Nguyen located?

John Nguyen practices at 1328 S Mission Rd, Fallbrook, CA 92028. The listed phone number is (760) 451-4752.

What is John Nguyen's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is John Nguyen enrolled in Medicare?

Yes. John Nguyen is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for John Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Nguyen reassigns Medicare benefits to 2 organizations: Eagle Butte Indian Health Service Hospital (Eagle Butte, SD) and Lower Brule Health Center Ihs (Lower Brule, SD). 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 John Nguyen'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 John Nguyen was last updated on April 26, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.