1. Home
  2. Directory
  3. California
  4. Orange
  5. Psychiatry Neurology
  6. NPI Profile

MARK D CALAYAG M.D.
NPI 1336373901
Psychiatry & Neurology - Neurology with Special Qualifications in Child Neurology in Orange, CA

Active since May 11, 2009PECOS Enrolled
200 S MANCHESTER AVE, SUITE 210, ORANGE, CA 92868(714) 456-6966 Get Directions Write a Review

NPPES record last updated: January 3, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 3, 2025, Nov 10, 2021, Mar 13, 2017 (3 updates tracked since 2017).

About Mark D Calayag M.d. NPPES

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

MARK D CALAYAG M.D. (NPI 1336373901) is an individual neurology with special qualifications in child neurology provider in Orange, California, licensed in California (A137268) and active in the NPI registry since May 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1336373901
Entity TypeIndividualMale
Primary Taxonomy2084N0402X
Provider Legal NameMARK D CALAYAGCredential: M.D.
Location Address200 S MANCHESTER AVE, SUITE 210Orange, CA 92868-3217
Mailing Address200 S Manchester Ave, Suite 210Orange, CA 92868-3217 · (714) 456-6966
Phone(714) 456-6966
Sole ProprietorYes
Enumeration DateMay 11, 2009
Last NPPES UpdateJanuary 3, 20253 updates tracked since enumeration
NPPES CertifiedJanuary 3, 2025
✔ NPI 1336373901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Neurology with Special Qualifications in Child NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0402X
License✔ Licensed in CA · A137268
Definition
A Child Neurologist specializes in neurology with special skills in diagnosis and treatment of neurologic disorders of the neonatal period, infancy, early childhood, and adolescence.
Also ListedNeurological SurgeryTaxonomy 207T00000X · License 137268 (CA)
200 S MANCHESTER AVE, Orange, CA 92868
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark D Calayag 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92868 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
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.

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.

TIMOTHY SCOTT GOLDBERG PT
Physical Therapist
200 S MANCHESTER AVE, SUITE 100
ORANGE, CA 92868
Orange County (714) 456-5571
MANCHESTER SURGICAL PAVILLION
Clinic/Center (Ambulatory Surgical)
200 S MANCHESTER AVE, SUITE 650
ORANGE, CA 92868
Orange County (310) 202-6204
DR. XAVIOUR JAMES WALKER M.D.
Internal Medicine (Geriatric Medicine)
200 S MANCHESTER AVE, SUITE 835
ORANGE, CA 92868
Orange County (714) 456-6576
DR. LUIS ANTONIO CHUI M.D
Neuromusculoskeletal Medicine & OMM
200 S MANCHESTER AVE, SUITE 110
ORANGE, CA 92868
Orange County (714) 456-2332
UC IRVINE MEDICAL CENTER
Clinic/Center
200 S MANCHESTER AVE, SUITE 110
ORANGE, CA 92868
Orange County (714) 456-2332
SHAHZEEN SAROSH SIGANPORIA
Physical Therapist
200 S MANCHESTER AVE
ORANGE, CA 92868
Orange County (717) 456-5571
AL SAID ALY MD
Surgery (Plastic and Reconstructive Surgery)
200 S MANCHESTER AVE, 650
ORANGE, CA 92868
Orange County (714) 456-5253
DR. THOMAS SCHOLZ M.D.
Surgery (Plastic and Reconstructive Surgery)
200 S MANCHESTER AVE, SUITE 650
ORANGE, CA 92868
Orange County (714) 456-5253

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 Mark Calayag's NPI number?

The NPI number for Mark Calayag is 1336373901. It was assigned to this individual provider in the NPPES registry on May 11, 2009.

Where is Mark Calayag located?

Mark Calayag practices at 200 S Manchester Ave Suite 210, Orange, CA 92868. The listed phone number is (714) 456-6966.

What is Mark Calayag's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology with Special Qualifications in Child Neurology, with taxonomy code 2084N0402X.

Is Mark Calayag enrolled in Medicare?

Yes. Mark Calayag is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Calayag was last updated on January 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.