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DR. ALEXANDER P DUNNUM DO
NPI 1689177826
Anesthesiology in Oceanside, CA

Active since March 14, 2018PECOS Enrolled
200 MERCY CIRCLE, OCEANSIDE, CA 92058(760) 725-1288 Get Directions Write a Review

NPPES record last updated: November 19, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 19, 2025, Sep 17, 2025, Sep 10, 2024 and 5 more (8 updates tracked since 2018).

About Dr. Alexander P Dunnum Do NPPES

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

DR. ALEXANDER P DUNNUM DO (NPI 1689177826) is an individual anesthesiology provider in Oceanside, California, licensed in California (20A22730) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1689177826
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. ALEXANDER P DUNNUMCredential: DO
Location Address200 MERCY CIRCLEOceanside, CA 92058
Mailing Address200 Mercy CircleOceanside, CA 92058
Phone(760) 725-1288
Sole ProprietorYes
Enumeration DateMarch 14, 2018
Last NPPES UpdateNovember 19, 20258 updates tracked since enumeration
NPPES CertifiedNovember 19, 2025
✔ NPI 1689177826 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · 20A22730
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedMilitary Health Care ProviderTaxonomy 171000000X · License 0102205752 (VA)
200 MERCY CIRCLE, Oceanside, CA 92058
Open in Google Maps ↗

Secondary Practice Locations 2

Location 17300 N Fresno StFresno, CA 93720-2941 · Phone (559) 448-4500
Location 2101 The City Dr SOrange, CA 92868-3201 · Phone (714) 456-8888

Other Identifiers 2

Other20A22730CA · Medical License
Other0102205752VA · Medical License

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alexander P Dunnum Do 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

3

Medicare enrollment records show Alexander Dunnum reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southern California Permanente Medical Group
34 mi
Health Maintenance Organization
1288 CAMINO DEL RIO N
San Diego, CA 92108
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1023425972 (877) 608-0044
Regents Of The University Of
49 mi
Anesthesiology
101 THE CITY DR SOUTH
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 420 clinicians in this Medicare group
NPI 1487602546 (714) 456-8068
Permanente Medical Group Inc
385 mi
Internal Medicine
710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1073606299 (408) 851-1000

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

Other Providers at the Same Location NPPES 10

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

MCKENNAN A COOK MD
General Practice
200 MERCY CIRCLE
OCEANSIDE, CA 92058
San Diego County (719) 725-1288
LANDON KING M.D.
Surgery
200 MERCY CIRCLE
OCEANSIDE, CA 92058
San Diego County (760) 719-3695
CARRIE J. NICHOLS M.D.
Family Medicine
200 MERCY CIRCLE, FAMILY MEDICINE DEPT
CAMP PENDLETON, CA 92058
San Diego County (760) 719-3616
DR. JORDAN WHITNEY LYONS
Family Medicine
200 MERCY CIRCLE
CAMP PENDLETON, CA 92058
San Diego County (760) 725-4357
MELISSA ANN LOPEZ DPT
Physical Therapist
200 MERCY CIRCLE
OCEANSIDE, CA 92058
San Diego County (760) 725-1780
SYDNEY MARIE DAVIS
Pharmacist
200 MERCY CIRCLE
OCEANSIDE, CA 92058
San Diego County (574) 387-0062
EVE SACHA POTEET DNP, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
200 MERCY CIRCLE
OCEANSIDE, CA 92058
San Diego County (760) 725-1288
EMMALEIGH PRICE R.T.(R)
Radiology (Diagnostic Radiology)
200 MERCY CIRCLE
OCEANSIDE, CA 92058
San Diego County (405) 588-3044

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 Alexander Dunnum's NPI number?

The NPI number for Alexander Dunnum is 1689177826. It was assigned to this individual provider in the NPPES registry on March 14, 2018.

Where is Alexander Dunnum located?

Alexander Dunnum practices at 200 Mercy Circle, Oceanside, CA 92058. The listed phone number is (760) 725-1288.

What is Alexander Dunnum's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Alexander Dunnum enrolled in Medicare?

Yes. Alexander Dunnum is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Alexander Dunnum's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Dunnum reassigns Medicare benefits to 3 organizations: Southern California Permanente Medical Group (San Diego, CA), Regents Of The University Of (Orange, CA) and Permanente Medical Group Inc (Santa Clara, 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 Alexander Dunnum'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 Alexander Dunnum was last updated on November 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.